002 Residual Stress And Permanent Deformation Elastoplastic Material Part1

In the shown figure, a 30mm rod with an elastic perfectly plastic material is utilized. The yield stress and modulus of elasticity are 180MPa and 100GPa, respectively. The rod is supported between fixed points A and B. The length of AB is 1200mm, and at the distance of 400mm from support A is subjected to a horizontal load P.

1. Which element would yield first while the force P is increased?
2. Determine the corresponding load that one element would yield.
3. Sketch the force deformation of point C with respect to the force increment.
4. Determine the maximum plastic deformation of element AC when the maximum yield force is applied.

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