Elasticity/Sample quiz1

1. Show the directions of normal and shear stresses on a cube of material. Also label the arrows using the standard symbols and subscripts.
2. Since you are using arrows, you are suggesting that the stresses you have shown are vectors. Are they ?
3. Write down the strain-displacement relations.
4. Write down the stress-strain relations for an isotropic, linear elastic material in matrix form.

Elasticity