Determine the thickness of a 2" x 2" angle bar for members BD, BC and DE of truss as shown in the figure. The stresses are not to exceed 20 ksi in tension and 14 ksi in compression. A reduced stress in compression is specified to reduce the danger of buckling. P1 = 4000 lb, P2 = 6000 lb. %3D Thickness

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A: Given : Max. tensile stress developed over section A-A ?

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Q: arning Goal: me member shown is subjected to a compressive ress in the x direction of a = 400 ksi…

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Q: How to make a effective stiffness matrix for this figure?

A: The free body diagram of the given structure is:

Planar Stresses