about tribology

Dear all Lammps users,
in the simulation of tribology, i want the diamond tip to move to a new location on the film surface, and then the simulation system could be relaxed for a period of time (eg. 10fs), then the tip move to the next new location on the film surface,and relax for a time span again、、、、、 How can i do it? what commands i can use? Now i use the Velocity command to give the tip a velocity in the x orientation, to make the tip move on. But There have no relaxation time during the tip moving from one location to the new location for in the evergy timestep the tip is being moving. Thank you in advance.

Dear all Lammps users,
              in the simulation of tribology, i want the diamond tip
to move to a new location on the film surface, and then the
simulation system could be relaxed for a period of time (eg. 10fs),
then the tip move to the next new location on the film surface,and
relax for a time span again、、、、、 How can i do it? what commands
i can use? Now i use the Velocity command to give the tip a velocity
in the x orientation, to make the tip move on. But There have no
relaxation time during the tip moving from one location to the new
location for in the evergy timestep the tip is being moving. Thank you
in advance.

you can just write a script the loops over two run statements
and create fix move to move the diamond tip for the first run
and delete it before the second run. if you define a time
integration fix only for the remaining atoms, you should get
exactly what you are asking for.

axel.