# material model
deviatoric_strain
   elastic-plastic
      100.0 # shear modulus
      1.5 # yield stress
      0.0 # viscosity
   0.05 # dpsimax
   1.0e-6 # angmin
   cubic_grueneisen
      5.386 1.339 0.0 0.0
      1.97 0.48
      2.707

2.707 0.0   0.0 0.0 0.0 0.0 0.0 0.0   0.0 # ref state (rho, e, epse, epsp)

# grad u
-1.0 0.0 0.0
 0.0 0.0 0.0
 0.0 0.0 0.0

0.01 # dt
100 # nsteps