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A uniaxial compression test on an elastic-perfectly plastic rock type gives a yield strength of 110MPaand a modulus of elasticity of 25GPa. Following the post-failure portion of the curve, an unloading operation to zero load is done at an axial strain level of 10.4m. Assuming v=0.3. a) Plot the 11curve and find 1e(elastic component of axial strain) 1p(permanent axial strain). (Note: Tangent modulus is the same for the loading and unloading sequences.) b) Plot 1vs. 2or 3and find 2eand 2p. c) Plot 1vs. (2+3)curve and find (2+3)e and (2+3)p- d) Plot volumetric strain vs. 1and mark

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significant points.