---- Elastic-Plastic Torsion Problem -----
mx: 10     my: 10   

iter =   0, Function value -0.330579, Residual: 0.728961 
iter =   1, Function value -0.391218, Residual: 0.386209 
iter =   2, Function value -0.412219, Residual: 0.209489 
iter =   3, Function value -0.424578, Residual: 0.104311 
iter =   4, Function value -0.426033, Residual: 0.112253 
iter =   5, Function value -0.427233, Residual: 0.0332491 
iter =   6, Function value -0.427491, Residual: 0.0246162 
iter =   7, Function value -0.427717, Residual: 0.0129942 
iter =   8, Function value -0.427741, Residual: 0.00603353 
iter =   9, Function value -0.427743, Residual: 0.00427758 
iter =  10, Function value -0.427745, Residual: 0.000625767