hw5_stsm00 - bering provided in the figure. 2) Find all...

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CES 4141 - Stress Analysis Summer 2000 1 of 2 6/26/00 HW # HW # 5 assigned 7/6/00, due 7/13/00 (Get the truss notes off my web page) Problem 1 1) Use stiffness by definition to find the stiffness matrix for the truss structure. 2) Build the load vector R 3) Solve for the displacements r1, r2, r3 4) Find internal forces in each member 5) Find reactions E = 29000 ksi A = 2 in^2 r1 r2 r7 r4 r5 r3 r6 1 2 3 4 5 6 8 kips 1 2 node number element number 4 ft 8 ft 6 ft K = 3x3 r8 3 4 6 kips 3 4
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CES 4141 - Stress Analysis Summer 2000 2 of 2 6/26/00 HW # Problem 2 1) Find the structural stiffness matrix using the direct stiffness method. Use the D.O.F., element, and node num-
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Unformatted text preview: bering provided in the figure. 2) Find all nodal displacements due to the given loading using the appropriate partitioned part of and Gaussian elimination (use calculator). 3) Find the reactions using the appropriate partitioned part of . 4) Find the internal forces in each member using the force recovery equation. 5) Identify the member most likely to fail for the given load condition. Kr R = Kr R = KG = 3x3 E = 29000 ksi A = 2 in^2 K 11 K 12 K 21 K 22 8 x 8 node number element number 5x5 r1 r2 r7 r4 r5 r3 r6 1 2 3 4 5 6 8 kips 1 2 4 ft 8 ft 6 ft r8 3 4 6 kips 3 4...
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hw5_stsm00 - bering provided in the figure. 2) Find all...

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