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Engineering and Comp Sci Homework Help
Matrix of rotated elements (stiffness matrix)
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[QUOTE="StoneTemplePython, post: 5942291, member: 613025"] I'm not sure what the "stretch k" and some other symbols on here are referring to, but you may consider what happens if you multiply each side by the transpose of your matrix. Transposition 'flips' the negative signs that seem out of place here. The matrix is orthogonal, so you may just be missing which matrix is the "original one" and which one is the inverse. [/QUOTE]
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Matrix of rotated elements (stiffness matrix)
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