Elasticity/Sample quiz 2


 * 1) Write down the equation of equilibrium in the absence of body forces.  Use index notation.
 * 2) Write down the relationship between the traction vector acting on an arbitrary surface of a body and the stress tensor in the body.
 * 3) Write down the basis transformation rule for the stress tensor in both index notation and matrix notation.
 * 4) Consider a square block under pure shear as shown below.  Draw the directions of the maximum and minimum principal stresses on the figure.  Ignore the third dimension.