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summary10 - 2 Strength compatibility(S.C Expression of S.C...

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Lecture 10- summary No material or structural element can sustain infinite load! Physical reason: Atomic bonds inside a material can only sustain a critical load, on the order of a few nN. Therefore - need to satisfy two condition in structural problems: 1. Static equilibrium, that is, statically admissible (S.A.)
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Unformatted text preview: 2. Strength compatibility (S.C.) Expression of S.C. in terms of material strength σ : A 3 A 1 /A 3 =2 same strength σ 0 Robust nes s r at io gam ma_1/ ma_3 1 0 0 50 Angle phi A 1 8 7 6 A 2 4 5 3 2 φ Same robustness for 30 degree angle Failure occurs simultaneously in all rods 100...
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