# problem5 - 22.314/1.56/2.084/13.14 Fall 2006 Problem Set V...

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GPa STRA~N MPa) MPa, (cp) (strain- (E,)? (oa,J oa #A}: MPa. @aij) (caij)? (oa,) 22.314/1.56/2.084/13.14 Fall 2006 Problem Set V Due 10/19/06 This problem illustrates some "plastic strain" concepts and some calculation methods for treating plasticity. Uniaxial Stress-Strain Information: Consider a material that has the uniaxial stress-strain curve (actually two straight lines) shown below. The first portion of the curve, a line from the origin to STRESS point A, has no plastic deformation. The second portion, a line from point A to point B, has both elastic and plastic deformation. The elastic stress -strain behavior is characterized by a Young's Modulus of 195 and a Poisson's ratio of 0.3. Additional information about the uniaxial curve includes the stress at point A (1 50 and the 0 (stress, strain) at point B (260 0.54%). Derived Properties: Using the above uniaxial stress-strain information, what is the 0.2% offset yield stress for this material? What is the plastic stress as a function of equivalent

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## This note was uploaded on 02/24/2012 for the course MECHANICAL 2.084J taught by Professor Mujids.kazimi during the Fall '06 term at MIT.

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problem5 - 22.314/1.56/2.084/13.14 Fall 2006 Problem Set V...

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