Hi LAMMPS users,
I have a problem in minimization in nanoindentation problem. I saw the indent example with minimization, which does a dynamics on an indentation, and then remove the indenter and relax the system by using minimize command. My question is could I just use minimize for a statics indentation, which means no dynamics in the whole procedure, and indenter was moved down by the definition of the position of the indenter by fix command for several steps. The command is like this:
fix 4 all indent 3.31 sphere 0 0 1000007 1000000 units box
minimize 0.00001 100 10000
I tried this, but seems like you cannot do minimize without a dynamics before that. Then I add dynamics betwwen the two commands, like:
fix 4 all indent 3.31 sphere 0 0 1000007 1000000 vel 0.0 0.0 0.0 units box
run 10
minimize 0.00001 100 10000
However, what I want to do is minimize the energy of each step after moving down the indenter a distance. Could you give me some suggestions about this, or how can I use minimize without dynamics? Thanks a lot!
Yours,
Jie Lian