Hi dear all
I am performing nanoindentation using spharical diamond indentor taken as rigid body using morse potential. I am not using fix indent command.
I am using command
velocity dot set 0.0 0.0 -0.1 units box
for moving the indenter with the constant velocity. the problem is that dot move toward the substrate hit the substrate and then rebound after some time causes the force between indenter and substrate to becomes negative. I am unable to understand the problem the force is computed using
compute force dot group/group upper
I am waiting for your kind suggestions. any help and suggestion is appreciated
Regard
Muhammad Imran