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HW2-extra - Non-textbook problems for HW2 The second...

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Non-textbook problems for HW2 The second problem is typical of exam problems, and it should be done without calculators! A strain rosette consisting of three strain gages was used to measure the strains at a point in a thin-walled plate subjected to forces in the plane of the plate. The measured strains in the three gages are: 0.001, 0.0006, 0.0008 A B C ε ε ε = = − = . a) Determine the complete state of strain (all 6 components of strain) at that point. Poisson’s ratio is 0.3. b) What are principal strains and their directions? B C
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