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Unformatted text preview: 2 Assume beams AB and CD have same bending rigidity EI = constant. Find the internal force of the spring. Solution: Take the spring force as the redundant Compatibility: 10 P F spring B C = + = A B C D P 3 3 L EI k = 2 L L A B C D F F ( ) EI FL EI L F B 3 8 3 2 3 3 = = EI FL k F spring 3 3 = = EI FL EI PL C 3 3 3 3 = P...
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- Spring '11