Ansys

Bu projede, Ansys 16 programı kullanılarak modellenen NACA 4415 profilli uçak kanadının Ansys 16 programı kullanılarak akış analizini yapmak ve bu analiz sonucu elde edilen değerleri kullanarak mühendislik uygulamaları kapsamında statik analizi yapılması amaçlanmıştır.

Hava soğutmalı tek silindirli olarak planlanan model uçak motorununun boyut ve termodinamik hesaplamaları yapılmış ve boyut analizlerine bağlı kalarak Solidworks programıyla tasarımı ve montajı yapılmıştır. Tasarımı yapılan motorun daha sonra yanma odası tasarımı yapılarak ANSYS programı ile yanma odası akış analizi yapılmıştır. Analiz sonucuna göre optimizasyon çalışması yapılarak en optimum tasarım bulunmuştur.

1M. Tech student, Civil-Structures, Maharashtra Institute of TechnologyWPU, Pune, M.H. India 2HOD, Civil-Structures, Maharashtra Institute of Technology-WPU, Pune, M.H. India ---------------------------------------------------------------------***-------------------------------------------------------------------ABSTRACT: Beam column joints in concrete framed structure have been identified as critical member for transferring forces and bending moments between beams and columns. The change of moments in beam and columns across the joint region, under loadings, induces high shear force and stresses as compared with other adjacent members. The shear failure caused is often brittle in nature which is not an acceptable structural performance. Retrofitting enhances the moment carrying capacity of joint. Often beam column joints need to be strengthened. Author proposes use of ferrocement for retrofitting as wrapping technique, cost effective alternative to costly FRP wrapping technique. In...

The performance of flexible pavement vehicle varying its depth with vertical wheel load to analysis its distresses. The objective of this project is to determine the performance is of flexible pavement like rutting and fatigue on varying depth of subgrade with and without of reinforcement material subjected to vehicle wheel load. In this research the next step is to find out the laterite soil properties and applying the standard wheel load and single axle wheel load on varying thickness of subgrade. The analysis of both the soil which is used in subgrade murum and laterite is carried out with and without geosynthetic material to obtain minimum depth of subgrade which reduce the material cost moreover construction cost. The model number two is found to be more suitable as compared with other models when compared with the different results in terms of the total deformation, elastic strain and normal stress in the case of murum without geosynthetic material case.

This paper concentrates on the design, analysis, and development of fixed-wing hand launch unmanned aerial vehicle (UAV). This flight can able to carry the payloads of 0.8. The design process involves the conceptual, preliminary, and detailed design. This paper involves the investigation of the aerodynamic characteristics over the wing to enhance the aerodynamic design of the UAV. This analysis includes estimating the best gliding ratio to increase the flight mission and attain the maximum altitude. This simulation will be performed for subsonic flow with Mach number 0.04202(14.3m/s). The manufacturing of the UAV is done using composite materials like glass fiber of both (1mm and 2 mm) thickness, carbon fiber of 2mm, and carbon rod is used for connecting the empennage to the fuselage. The detailed design has been done in CATIA V5 and the analysis of the wing has been done using XFLR, ANSYS (fluent).

The purpose of this work is to discuss the tulip contact behavior during mechanical and electrical simulations in a Finite Element Method (FEM) environment using ANSYS and COMSOL software. During the simulations, the full contact movement was analyzed. During the contact movement, the individual behavior of the contact components was taken into consideration. The motion simulation was carried out at different velocities and forces acting on the contact. The obtained results were compared to each other and discussed. Relatively, the angles of the contact surfaces to each other were also changed, which meant that we could conduct a more in-depth analysis. The other approach of simulation research was a field analysis of physical phenomena occurring in the tulip contact. This analysis was performed in COMSOL Multiphysics. Parametric analysis allowed an observation of the electric field in the tulip contact at different contact distances with respect to each other. This work is importan...

This paper describes the design analysis of the aluminum cartridge case, its testing, Analytical Simulation (ANSYS) and evaluation against Improvised Explosive Devices (IEDs) applications. Aluminum material is light in weight, non-corrosive and compatible with the propellant. Because of excellent properties, it is widely used in defence application sector. In the armament system, an effort is being made to reduce the cost, the weight of material from logistic point of view and its manufacturing process so as to meet the design requirements. Brass cartridge cases are being widely used in various types of ammunition for last 100 years e.g. armaments of small arm cartridges, artillery shell and power cartridges for fighter aircraft. Cartridges are made of either aluminum, steel or brass is filled with the propellants and pyrotechnic composition. With suitable means of ignition, the propellant generates the hot combustion gases at high pressure and temperature. These combustion gases are utilized to perform certain work on the system. The aluminum cartridge case for water disruptor applications plays a significant role in the destruction of the suspicious objects. This paper discusses the design aspects of the aluminum cartridge case for disruptor application of suspected IEDs. Performance evaluation parameters i.e. maximum pressure (Pmax) and time to reach maximum pressure (TPmax) of aluminum cartridge have been carried out in a Closed Vessel (CV) using a Data Acquisition System (DAS). The material properties of aluminum such as tensile strength, percentage elongation and yield strength are determined using a Universal Testing Machine (UTM). Using the data obtained by the above methods, an attempt has been made to determine stress, strain and deformation of the cartridge case theoretically and numerically using ANSYS software. The results obtained by both methods are compared. The results are in good agreement with each other. It is observed that the percentage error for von-Mises stresses is 10.2 % using numerical and theoretical approaches. The percentage error between numerical and theoretical values of the hoop and longitudinal stresses are 6.71 % and 6.78 %. The percentage error between numerical and theoretical values of the hoop and longitudinal strains are 1.36 % and 3.64 %. The errors between theoretical and numerical values for radial displacements are 2.83 %. The novelty in this research work is that the design analysis of aluminium cartridge case is carried out using ANSYS software simulating the realworld problem. The analytical results are compared with numerical results. The actual pressure experienced by the cartridge case generated by the propellant burning is taken into consideration. This pressure is measured by a pressure transducer fitted over a specially designed test rig using a DAS. The sample of aluminum case is tested for hardness and microstructure. The results show there is no significant difference before and after the hardness and microstructure of the material. The results of ANSYS for stress and strain are in good agreement with theoretically calculated results and numerical analysis as percentage error is less than 11. This draws the inference for validating numerical and theoretical results. It is seen that 57.352 % saving in weight using aluminum cartridge is achieved. Using ANSYS, hoop stress 382.7 MPa, Hoop strain 4.32x10-3 , longitudinal strain 0.8602x10-3 and longitudinal stress 191.5 MPa are estimated. The main objective of this paper is to carry out design and analysis of aluminum cartridge case analytically as well as numerically.

A simply supported bridge is modelled to investigate the effect of a strain rate dependent modulus of elasticity on the dynamic response of the structure to a moving load. The bridge is modelled as a one-dimensional discretized finite element beam and the moving load is represented by a point force. A constant modulus of elasticity is traditionally employed when simulating the dynamic response of structures under moving loads. In this paper, a time-variant modulus is used to calculate strains and displacements and compare them to the traditional approach for different speeds and bridge spans. The time-variant modulus is obtained from the strain rate of the structure which is used in turn to update the strain. The results show significant changes in the modulus and in the resulting load effect as load magnitude and speed increase.

Argentinian National Standard IRAM 1603 establishes the characteristics of reinforced concrete poles with an annular section and frustoconical shape, which are used as support for overhead lines for the transmission of electrical energy and telecommunications. The standard specifies the test methods to which poles are subjected to determine their strength and characterize their behavior. The bending test is highlighted in its elastic phase and load phase until failure, so the value of the characteristic ultimate bending load (R) is obtained.
In this assay, the design and resistance requirements established by the standard are studied for a 9 meters long pole and 600 daN nominal strength. The structural behavior is numerically analyzed based on a parametric study for different concretes and reinforcements. From this analysis and taking into account different design alternatives, the cracking initiation load, the force-displacement curve and the failure load are determined in order to achieve an optimization of the material that satisfies the regulatory requirements.

Heat losses are a major limiting factor for the efficiency of internal combustion engines. Furthermore, heat transfer phenomena cause thermally induced mechanical stresses compromising the reliability of engine components. The ability to predict heat transfer in engines plays an important role in engine development. Today, predictions are increasingly being done with numerical simulations at an ever earlier stage of engine development. These methods must be based on the understanding of the principles of heat transfer. In the present work V type multi cylinder engine assembly is modeled by CATIA V5. This model is imported to ANSYS and done the steady state thermal and Structural analysis for predicting thermal stress, temperature distribution by comparing with advance carbon material (FU 4270) from existing material (Aluminum). Heat transfer is one major important aspect of energy transformation in internal combustion (IC) engines. Locating hot spots in a solid wall can be used as an impetus to design a better cooling system. Fast transient heat flux between the combustion chamber and the solid wall must be investigated to understand the effects of the non-steady thermal environment.

A ‘Hybrid electric vehicle' is a vehicle which relies not only on batteries but also on an internal combustion engine which drives a generator to provide the electricity and may also drive a wheel. It has great advantages over the previously used gasoline engine that drives the power from gasoline only. It is a major source of air pollution. The objective is to design and fabricate a two wheeler hybrid electric vehicle powered by both battery and gasoline (PETROL). The combination of both the power makes the vehicle dynamic in nature over conventional automobiles. Hybrid electric vehicles combine an electric motor, battery and power system with an internal combustion engine to achieve better fuel economy and reduce toxic emissions. Equipment and their cost analysis are done. It deals with the fabrication of the vehicle. The final stage would consist of increasing the efficiency of the vehicle in economic ways.

This paper concentrates on the design, analysis, and development of fixed-wing hand launch unmanned aerial vehicles (UAV). This flight can able to carry payloads of 0.8. The design process involves the conceptual, preliminary, and detailed design. This paper involves the investigation of the aerodynamic characteristics over the wing to enhance the aerodynamic design of the UAV. This analysis includes estimating the best gliding ratio to increase the flight mission and attain the maximum altitude. This simulation will be performed for subsonic flow with Mach number 0.04202(14.3m/s). The manufacturing of the UAV is done using composite materials like glass fiber of both (1mm and 2 mm) thickness, carbon fiber of 2mm, and carbon rod is used for connecting the empennage to the fuselage. The detailed design has been done in CATIA V5 and the analysis of the wing has been done using XFLR, ANSYS (fluent).

In this work, the active vibration control of a uniform cantilever beam using piezoelectric materials subjected to transverse vibrations is studied. The equation of motion of a beam bonded with the piezoelectric actuator is realized based on the Euler Bernoulli beam theory and the Hamilton's principle. A linear time invariant state space model is derived. Numerical simulations of the equation of motion are performed. Moreover, a finite element model of the beam-piezo system is done using ANSYS APDL©. Two control algorithms were also implemented using ANSYS APDL code to reduce the flapwise bending vibrations of the beam. The two control techniques are: Linear quadratic regulator (LQR) and positive-position-feedback (PPF). Results of the PPF simulations were compared with that of the LQR control and the advantage of using PPF control over LQR control in the finite element simulations is presented.

The most transport truck directing course of action is to turn the front wheels utilizing a hand worked controlling wheel which is situated before the Driver. The directing segment, which contain an all inclusive joint which is a piece of the collapsible controlling section which is intended to enable it to veer off from a straight line as indicated by the Roadmap. In 4 wheel controlling with three mode activity three guiding modes can be changed as required which helps with stopping at substantial traffic conditions, when arranging territories where short turning sweep is required and in rough terrain Driving. For reducing weight of steering wheel carbon fiber used. The 3D model of steering wheel will be made with the assistance of CATIA V5 Software. The Model Analysis will be carried out using ANSYS19.2 . The experimental Impact Hammer testing will be carried out. Comparative analysis will be carried out between Analysis results and experimental results. Result & Conclusion will b...

The laminated tapered beams are increasingly being used in engineering applications, such as turbine blades, helicopter blades, aero-foils, yokes, robot arms and satellite antennas where in the stiffness  of the structure needs to be varied along the length of the beam. Such tapered laminated structures, which are formed by dropping off some of the plies at discrete positions over the laminate, have received much attention from researchers because of their structural tailoring capabilities, damage tolerance, and their potential for creating significant weight savings in engineering applications. The inherent weakness of this construction is the presence of material and geometric discontinuities at ply drop region that induce premature inter-laminar failure at interfaces between dropped and continuous plies. In this present work, the effect of these ply drops on the stress distribution on a composite structure is considered. In this work ,three composite models (with symmetry & unsymmetrical orientation angles)aredeveloped with and without ply drop off. The ply-drop off models is considered as external taper type and mid plane taper type. The maximum stress in all the three models is to be compared and the effect of the ply-drop on the stress distribution is to be studied. The effect of fibre orientation and the strength of composites are studied by using ANSYS software to estimate its strength when pressure load is applied.

Polydimethylsiloxane (PDMS) is a soft polymer that is primarily used for soft lithography (e.g., microfluidics and labon-chip devices) and also has wide range of applications, such as for thermomechanical actuators. The unique material properties of PDMS (such as the low values of Young's modulus) renders it to be an attractive material for applications where large range of deformations can be achieved with small variations in the actuating pressure (or actuating forces) thus providing good mechanical advantage. PDMS has been reported in the literature for microfabricating and testing thermally actuated microvalves (for microfluidics applications). These microvalves involve the thermal expansion of a fluid resulting in the deformation of a flexible PDMS membrane. Accurate numerical modeling of such thermo-mechanical actuators made from PDMS necessitates the knowledge of the temperature dependent mechanical properties of PDMS (such as Young's modulus) which is currently lacking in the literature. In this study large deformations were obtained for a thin flexible PDMS membrane (with a square footprint of 7.2 mm and thickness of 200 microns) that was microfabricated on the top of a hermetically sealed cavity (that was 3 mm deep) by subjecting the membrane to thermo-pneumatic pressure arising from the thermal expansion of air trapped in the hermetically sealed cavity and heated from below. This enabled the experimental determination of maximum displacement of the membrane as a function of actuating temperature and therefore the estimation of the temperaturedependent mechanical properties (e.g., Young's Modulus and Poisson's ratio) using parametric simulations using the finite element method (FEM) and based on linear elastic assumption for the deformation of PDMS. Using digital images of the convex shape of the deformed PDMS membrane the maximum deformation was measured as a function of temperature under steady state conditions. Computational Fluid Dynamics (CFD) based commercial solver (Ansys™ 2019R1®) was used to estimate the air pressure inside the hermetically sealed chamber as a function of temperature under steady state conditions (which was verified by analytical calculations). The values of pressure (obtained from CFD simulations) was used as the boundary condition in the FEM model (Ansys™ 2019R1®) for a fixed value of the Young's Modulus and Poisson's ratio to estimate the maximum deformation of the PDMS membrane. By parametric variation of the Young's Modulus and Poisson's ratio (for a particular operating temperature) the actual values were determined based on the computational result that matched the experimental data. The results show that the material

Disk brakes are using from so many years in automotive and still researches are going on in this field for decreasing the temperature effect so that by this we can operate easily. Many new materials are introduced for the disk brake rotor to withstand high temperature produced during braking action. Apart from the high temperature property, the disc rotor materials must also have high thermal conductivity property, as this property decides the amount of heat dissipation to the air stream from the disk rotor. A brake material with good temperature and high thermal conductivity property gives maximum efficiency by overcoming the problem of thermo-mechanical instability [TEI] in the rotor which is more common in low thermal conductivity brake rotor material. In the present work, a Grey cast iron material and metal-ceramic has been chosen for the disk brake rotor. Number of methods before already introduced to know the history of the different materials related to disk brakes, analysis will be done in 2d and 3d in analytical and numerical methods. With different types of assumptions these numerical methods ranges from finite differences to finite elements. To conclude the temperature history for the Grey cast iron material, and metal-ceramic, a numerical simulation technique called finite element method is used. Transient analysis is carried out in ANSYS to predict temperature distribution as a function of time in the disk brake rotor. The results from the transient analysis are compared. As the brake rotor can be treated as the coupled field problem, it is mandatory to do structural analysis after performing thermal analysis in ANSYS to study the stability and rigidity behavior of the rotor material. The results from the transient analysis are given as the input to the structural analysis in order to conclude the stress distribution and displacement in disk brake rotor under thermal loading. The stability behavior of different brake rotor material is compared to facilitate the conceptual design of the disk brake system.

Pressure vessels are leak proof containers, as the name implies, their main purpose is to contain a given medium under pressure and temperature. Pressure vessels are commonly used in industry to carry both liquid and gases under required pressure and temperature limit. This pressure and temperature comes from an external source or by the application of heat from a direct or indirect source or any combination of them. After the review of many research papers, we find out that basically the most of the pressure vessels diameter was taken was from 300 mm to 2000 mm. Initially, we designed three non-standard body flanged pressure vessels different diameters. Pressure and material of vessels were selected as per practical conditions. We took SA 516 as flange material. After the designing of all cases we figure out the various stresses, loads and deformation using ANSYS and Pv-Elite. After that we redesigned Pressure vessels using standard flanges and figure out the same parameters using ...

Piloted flame D is an experimental flame that will be used as a comparison for this report. ANSYS Fluent and its combustion simulation capabilities will be utilised to model this flow. The generated flame will be analysed utilising combustion theory and the results compared with experimental data.

The development of new aircrafts over the years has been accompanied by advanced technology or introduction of new technologies for improved performance. Over the decades, the aviation industry has spearheaded the development of advanced systems and successfully integrated these technologies in aircrafts. Among these is the air conditioning system which has increased passenger comfort in a range of flying altitudes/ flight regimes. There is a new aircraft in its final stages of production, the Cessna 408 Skycourier, scheduled to take its initial operation flight in 2020. This project endeavours to design an air conditioning system for the aircraft to enhance passenger and crew comfort and also meet FAA CA 25-20 regulations which recommends aircrafts flying above 15,00ft be conditioned and pressurised. The bleed system of air conditioning is the most commonly used system, however, this comes at a compromise of reduced engine efficiency by draining bleed air from its compressor section. Thermacool system is another system adopted in small and light sport aircrafts without having to drain the engine. On the other hand, its demerit is the use of refrigerants in cooling which cause ozone degradation. A bleedless air conditioning system is therefore adopted in this course mitigating on system complexity for easy maintenance. Bleedless air conditioning is employed by the Boeing 787 Dreamliner. However, this system demands large amounts of energy which caused electrical power problems for the B787. The system in this design seeks to use available technology and equipment to device a system with less power and maintenance requirements. A conceptual design is developed which gives a paradigm of the configuration of the system. This is the initial stage of design and involves brainstorming multiple configurations and making a call after several iterations. From this baseline, a preliminary design is developed which comprises of CAD models developed in SolidWorks. This phase is a step further to actualization of the design and involves a comprehension of how the system components will work and performing tests and analyses to access the viability of the design configuration in meeting the system objectives. These comprise of structural and flow simulations carried out in Ansys software.

A Chimney is a structure that is used for removing hazardous gases from furnace and from big industry plants to outdoor atmosphere. Chimneys are generally vertical structure as far as possible to make sure that the hazardous gases flow easily and quickly by taking air into the combustion. Industrial Chimneys are having greater heights and slender structures with circular cross-sections. The height of a chimney determines its capability to pass gases to the outside environment via stack effect. Also, the dispersion of hazardous gases at greater heights can minimize their effect on the immediate surroundings. The project is based on the design concepts of chimneys according to Indian codes provisions and analyse through finite element method. Different types of steel chimney models are made by varying its height, geometry and diameter. The main objective of this study is to perform vibration analysis of steel chimney for dynamic wind loads using different critical velocity. Natural frequency and time period has been found out using analysis in Ansys. All the models are modelled in the Ansys Software.

A wind turbine is a rotary device which is used to absorb the kinetic energy from the wind. so as to convert the wind energy into the electrical energy rotor blade is the main element in a wind turbine. In current times the technology related to the wind turbine has increased exponentially. Despite the advancement in technology the cost of a vertical axis wind turbine (VAWT) remains the primary issue. Building-integrated wind turbines (BIW), which may be mounted on the roofs, between structures and inside wind ducts, are recently gaining popularity. For such applications, Vertical axis wind turbines are more suitable than horizontal axis wind turbines for aesthetic reasons and to maintain low levels of noise. This study aims at designing and analyzing a Vertical axis wind turbine with optimum performance at minimum cost. To analyze the complex, uncertain and unsteady aerodynamic flow related to the wind functioning, computational fluid dynamics (CFD) in an excellent and powerful method. The influence of various numerical aspects on the accuracy of simulating a rotating wind turbine is studied. By the assistance of Computational fluid dynamics (CFD) the behavior and power generated by the turbine is studied. Computational Fluid Dynamics (CFD) simulations were carried out using a three-dimensional vertical axis wind turbine model in ANSYS CFX 2020 R1.

ABSTRACT Automobile sector is one of the most blooming sectors now-a-days. With the advent of computer assisted engineering and the blend of classic methodologies combined together to bring the most durable result about pre-manufacturing analysis and design optimization. This paper presents an overview of the role of Computer Assisted Engineering in the Design and Simulation of a Formula Vehicle.

The Seperation of cotton seed from cotton is very important for the further use of the cotton for varies industries. The process of separating the cotton seed from cotton is called ginning and converting the cotton lint into bail is know as pressing. The machine which is used for the pressing operation is known as hydraulic press as it is powered by hydraulic liquids. The frame structure has to withstand the the forces generated while pressing operation and it is essential to calculate mechanical properties like total deformation and stress developed on the machinery. Hence, here the work has been being carried out on 10 TON press machine .Design is done in CATIA V5 and analysis is carried out in ANSYS workbench 14.5.

This Report presents the experience and skills gained during my 6 months of industrial training undertaken at Xigma Input and Output Technologies, Along Wire road, Benin City. My Training was on the use of engineering simulation software and fabrication tools for designing and manufacturing engineering systems and products During the period, I acquired practical knowledge and skills in using engineering software, majorly MATLAB and ANSYS; also times were spent in the workshop to get hands on experience in using the Lathe and other fabrication tools. I was able to run a simulation on a wind turbine blade using ANSYS fluent, also I used ANSYS mechanical to analyze the stresses and deformation of a bike crank system. I did a lot of mathematical modeling with MATLAB. This report discusses the Skills gained and Experience gathered during the period of training, justifying the relevance of the scheme in equipping students with needed technical competence to thrive in the real world.

Floor beam is a structural part of a fuselage which is used as floor space to passengers, cargo and fixed with fuselage skin. Here, the cross beam has taken as I-section and connected with attach bracket methods of joining. The design of aircraft floor beam is conceptual design for the cost and weight reduction, strength improvement and ease of fabrication of fuselage. Increased weight and less stiffness of the existing floor beam made of aluminum is major problem of present floor beam. Hence, CFRP (carbon fiber reinforced plastics) has chosen for the designing of floor beam in the aircraft. After the selection of material and cross section of floor beam, the whole parameters of cross section of floor has studied and designed in UG NX8 software then the model is imported to Ansys 14.5 for the dynamic analysis and life estimation. The expected outcome is to reduce the weight to strength ratio, cost, increase the durability and life cycle of cross beam.

Along with the growing necessity of improvement in the Brazilian oil and it’s derivatives transport infrastructure, comes up the necessity that every pipeline project becomes more economically efficient, reducing the project’s total cost at its maximum. To achieve that, this study intends to assist the understanding the influence of some variables on the project’s total cost due to the creation of a hypothetical relief with different inclinations, aiming always to obtain the route that represents the minimum cost for every case studied through the solution of a minimum path problem using the Dijkstra’s algorithm. Has a support tool, helping to determine with the best precision the flow’s pressure loss influence on the total cost, the software Ansys CFD was used. Analyzing the results of the volumetric fraction and pipe diameter variations it could be noted that different optimum routes tendencies were observed on the different analyzed cases, the main influencer factor was the cost due the pumping of the fluids. The costs of the routes varied from 0,00374 to 0,08032 US$/m³ of fluid transported between the studied cases, raising proportionally to the volume of oil in the mixture and in an inverse relationship, decreasing with the increase of the pipe’s diameter.

Inert gas shrouding in a tundish can result in the formation of a tundish open eye due to the presence of reversed flows on the upper surface of the tundish. Prolonged presence of open eyes promotes reoxidation of liquid steel and creates harmful inclusions, which can ultimately result in clogging of SENs. In the present study, the impact of open eye size and duration on harmful inclusion formation in the tundish of ArcelorMittal Dofasco’s No. 1CC has been analyzed using a comprehensive quantitative approach encompassing mathematical modeling, thermodynamic calculations, and observations at No. 1CC tundish. Validation work carried out using ASPEX inclusion analysis shows that the major inclusions formed include Al2O3 and Ti-Aluminates.

The desirable properties for any machining tool is to have high fracture strength and hardness at high temperatures which depends upon thermal conductivity of cutting tool material. The current research investigates thermal behaviour of single point cutting tool made from high speed steel (HSS) and high carbon high chromium steel (HCHC). The CAD model is developed using Creo 3.0 design package and thermal analysis is conducted using ANSYS explicit dynamic based on Finite Element Analysis. The stress deformation curves are generated for different depths of cut at specific cutting speed and comparative analysis are made on the basis of this curve. The findings have shown comparison between the two materials i.e. HSS and HCHC.

In this study, an impeller and volute of a centrifugal pump were designed and numerically analyzed in order to improve the pump efficiency. Before design, experimental and theoretical studies were performed on a centrifugal water pump taken as Model Pump (MP). Design parameters were taken as 100 m 3 /h for volume flow rate, 18m for head and 1480 rpm for rotating speed. After the inspection of the flow field in the MP, some geometrical modifications such as impeller inlet and outlet diameters, blade inlet and exit angles, blade wrap angle, blade thickness, blade inletand exit widthswere realized to design a new pump. Numerical analyses were performed for 8 different volume flow rates overlapping with experimental operation points by Ansys-Fluent Software. In numerical studies, k-ε turbulence model and standard wall function were utilized. The experimental and computational results were compared with the model pump. According to the analysis results at design flow rate, hydraulic torque value is decreased from 56.62 Nm to 51.05 Nm, while hydraulic efficiency is increased from 55.98% to 63.09%. In addition, in order to see the roughness effect and increase the pump efficiency, the wetted surfaces of the impeller and volute were coated with a polyurethane dye material. Later, performance curves of the coated and uncoated pumps were experimentally obtained which showed that the shaft power of the pump for the coated case was decreased around 10% and the hydraulic efficiency of the pump was increased approximately 18%. According to the economic analysis by basic payback period of the polyurethane coating is less than one year and the internal income ratio for ten-year life-cycle period is around %114.

This thesis is concerned with modeling of structural dynamics, dynamic stiffness, and active control of unwanted vibrations in Parallel Kinematic Mechanisms (PKMs) as a result of flexibility of the PKM linkages.
Using energy-based approaches, the structural dynamics of the PKMs with flexible links is derived. Subsequently, a new set of admissible shape functions is proposed for the
flexible links that incorporate the dynamic effects of the adjacent structural components. The resulting mode frequencies obtained from the proposed shape functions are
compared with the resonance frequencies of the entire PKM obtained via Finite Element (FE) analysis for a set of moving platform/payload masses. Next, an FE-based
methodology is presented for the estimation of the configuration-dependent dynamic stiffness of the redundant 6-dof PKMs utilized as 5-axis CNC machine tools at the Tool
Center Point (TCP). The proposed FE model is validated via experimental modal tests conducted on two PKM-based meso-Milling Machine Tool (mMT) prototypes built in the
CIMLab.
For active vibration control of the PKM linkages, a set of PZT transducers are designed, and bonded to the flexible linkage of the PKM to form a “smart link”. An electromechanical model is developed that takes into account the effects of the added
mass and stiffness of the PZT transducers to those of the PKM links. The electromechanical model is subsequently utilized in a controllability analysis where it is shown that the desired controllability of PKMs can be simply achieved by adjusting the
mass of the moving platform. Finally, a new vibration controller based on a modified Integral Resonant Control (IRC) scheme is designed and synthesized with the “smart link” model. Knowing that the structural dynamics of the PKM link undergoes configuration dependent variations within the workspace, the controller must be robust with respect to the plant uncertainties. To this end, the modified IRC approach is shown via a Quantitative Feedback Theory (QFT) methodology to have improved robustness against
plant variations while maintaining its vibration attenuation capability. Using LabVIEW Real-Time module, the active vibration control system is experimentally implemented on
the smart link of the PKM to verify the proposed vibration control methodology.

There is an ever-increasing demand for more advanced and user-friendly FEM packages. Despite the great progress achieved in FEM industry, the modelling of masonry structures is still challenging at several scales. The present paper discusses the potential capabilities of both FEM packages ANSYS and LS-DYNA for multiple scales modelling of masonry structures. The smeared and discrete modelling approaches, constitutive models and solution strategies will be discussed and the outcome will be supported with examples for unreinforced and reinforced masonry. Further discussion will be given to the difficulties and challenging problems. The paper will be concluded to recommendations to enhance the current state and the aspects of future works.