You are provided with a brittle material whose ultimate tensile strength is 25% of its ultimate compressive strength. Plot the failure loci for each of the brittle failure criteria. For example, you may want to to either
(a) Create a 2D contour plot in terms of o1 and o3 (sigma 1 and 3) axes,
(b) Identify the shear strength of the material on thes axes. Use your own creative method for conveying your solution.
HINT: use Match CAD or Matlab.