Its geometrical parameters are thickness of top and bottom plates [h.sub.1] and [h.sub.2], depth of orthogonal rib-stiffeners d, and thickness of x- and y-wise stiffeners [t.sub.x] and [t.sub.y], respectively.
Under investigation of effect of stiffener it is necessary to get response at three questions: how to install stiffener--vertically or inclined; what are to be dimensions of stiffener; what is the critical rigidity of stiffener?
[3] conducted some experiments and numerical analyses on shear walls with thin plates having stiffeners. Based on their research, shear wall without stiffener has S-shaped cycle diagram, but when stiffener is added to the wall, cycle diagram gets thick i.e.
WHAT YOU NEED: Water balloons or small regular balloons Fabric stiffener (available at fabric or craft stores) Embroidery yarn in a variety of colours Scissors Pin String What to do: 1.
Features include solid steel legs with stiffener bars for extra strength and support, pre-wired NEMA-rated controls, and moving parts with high-strength roller pins, snap rings and hardened cam followers.
Alongside the expansion, Trelleborg states it will also upgrade its existing equipment to include new advanced polyurethane dispensing equipment and an upgrade of its current syntactic and static bending stiffener plant.