Question 14 / 40:  Which of the following best describes the role of constitutive equations or relations in the calculation of mechanical behavior?
A  Constitutive relations describe laminate mechanics.
B  Constitutive equations allow calculation of material density as a function of external loads.
C  Constitutive relations permit calculation of shear strains from normal stresses.
D  Constitutive equations permit the calculation of dynamic behavior from molecular properties.
E  Constitutive equations relate material stresses to material strains.
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Explanation:

Six constitutive relations supplement the kinematic and equilibrium equations by relating material stresses to strains. These relationships may vary immensely in complexity in order to capture elastic, plastic, and viscous behaviors, among others.

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Mechanics I ME102

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Attribution:  Stephanie Redfern, Ranjeet (Ron) Agarwala, and Dr. Steve Gibbs. Mechanics I. The Saylor Academy 2014, http://www.saylor.org/courses/me102/
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