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243_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

# 243_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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SECTION 2.12 Elastoplastic Analysis 237 Elastoplastic Analysis The problems for Section 2.12 are to be solved assuming that the material is elastoplastic with yield stress Y , yield strain Y , and modulus of elasticity E in the linearly elastic region (see Fig. 2-70) . Problem 2.12-1 Two identical bars AB and BC support a vertical load P (see figure). The bars are made of steel having a stress-strain curve that may be idealized as elastoplastic with yield stress Y . Each bar has cross-sectional area A . Determine the yield load P Y and the plastic load P P . Problem 2.12-2 A stepped bar ACB with circular cross sections is held between rigid supports and loaded by an axial force

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