A rigid bar ACB is supported on a fulcrum at C and loaded by a force P

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A rigid bar ACB is supported on a fulcrum at C and loaded by a force P at end B (see figure). Three identical wires made of an elastoplastic material (yield stress σY and modulus of elasticity E) resist the load P. Each wire has cross-sectional area A and length L.
(a) Determine the yield load PY and the corresponding yield displacement σY at point B.
(b) Determine the plastic load PP and the corresponding displacement δP at point B when the load just reaches the value PP.
(c) Draw a load-displacement diagram with the load P as ordinate and the displacement δB of point B as abscissa.
A rigid bar ACB is supported on a fulcrum at
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Mechanics of Materials

ISBN: 978-0495438076

7th edition

Authors: James M. Gere, Barry J. Goodno

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