Dear All,

I am trying to do a static tensile simulation of amorphous PMMA with minimize command. However, my minimizer can’t convergence to the tolerance and terminated with criterion for minimization is “line search alpha is zero”. My output file is as follow.

min_style cg

minimize 0.0 1.0e-3 10000 10000

Minimization stats:

Stopping criterion = linesearch alpha is zero

Energy initial, next-to-last, final =

-768453.22238 -768456.813894 -768456.813098

Force two-norm initial, final = 13456.8 657.938

Force max component initial, final = 9833.46 532.626

Final line search alpha, max atom move = 2.23823e-14 1.19214e-11

Iterations, force evaluations = 7 38