hw4_stsm00

# hw4_stsm00 - you don’t have a calculator that solves...

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CES 4141 - Stress Analysis Summer 2000 1 of 2 6/12/00 HW #4 HW #4 assigned 6/13/00, due 6/20/00 1) For the following problems, use stiffness by definition to derive the stiffness matrix: A B C 10 ft K = r1 r2 r3 3x3 18 ft 8 ft r1 r2 K = 3x3 A B C 20 ft 15ft D r1 r2 r3 K = 3x3 r3 A B C D 8 ft 6 ft

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CES 4141 - Stress Analysis Summer 2000 2 of 2 6/12/00 HW #4 2) For each of the load combinations below, derive the load vectors [R] that will make up the right side of the equation K * r = R . Use the same D.O.F. labels as on the previous page. 3) Solve K * r = R to get displacements for the following systems below: A-2, B-2, C-3 You can solve using an HP type calculator this time, you don’t have to perform Gaussian Elimination by hand. If
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Unformatted text preview: you don’t have a calculator that solves matrix systems, go to the notes link on my CES 4141 web page for instructions on how to use MATLAB matrix analysis software in 200 Weil hall. A B C 10 ft 6 ft 1 8 ft 8 ft A B C D 1 8 ft 8 ft A B C D A B C 1 0 ft 6 ft A-1 A-2 B-2 B -1 3 k/ft 5 k/ft 2 k/ft 1 k/ft 32 k 12 k 8 k 40 k-ft 25 k-ft For all structures: E = 29000 ksi I = 1000 in 4 A B C D A B C D A B C D 10 k 5 k 7.5 ft 15 ft 10 k 5 k 60 k-ft 10 k/ft 15 k/ft C-1 C -2 C -3...
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hw4_stsm00 - you don’t have a calculator that solves...

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