Quiz: Section 2.2 Review of Definitions

1. Considering a body in equilibrium under various loads. The component of the stress normal to the surface is called the normal stress. What is the stress parallel to the surface called?

Contact Stress.

Von Mises Stress.

Shear Stress.

Maximum Normal Stress.

2. A general working definition of normal strain can be given as:

The change in length divided by the initial length.

The change in length

The change in length divided by the final length.

Final length divided by the initial length.

3. For a linearly elastic isotropic material undergoing small deformations, the elastic moduli can be used to relate:

Stress with strain.

Shear modulus with Poisson’s ratio.

4. The stiffness and compliance matrices for an isotropic material can be calculated by knowing which two material properties?

Young’s Modulus of Elasticity and Thermal Expansion Coefficient.

Young’s Modulus of Elasticity and Poisson Ratio.

Shear Modulus and Thermal Expansion Coefficient.

Shear Modulus and Poisson’s Ratio

5. The definition of stress is

load per unit area of the body.

load on a body.

load per unit length of the body.

6. Poisson’s ratio is defined as

negative of transverse normal strain divided by longitudinal normal strain with longitudinal load applied.

the inverse of Young’s modulus.

longitudinal normal strain divided by transverse normal strain with longitudinal load applied.

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