to apply the time-varying force or displacement

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1

Dear lammps users:
I want to apply the time-varying force or displacement on the molecular system, and my expected final results is that the atoms have great response to the external varying force or displacement, (e.g. Force=accelerationtime, Displacement=speedtime). But, I don’t konw how.
Any advices or comments are welcome.
Best wishes

D. Chai

2

Dear lammps users:
        I want to apply the time-varying force or displacement on the
molecular system, and my expected final results is that the atoms have great
response to the external varying force or displacement, (e.g.
Force=acceleration*time, Displacement=speed*time). But, I don't konw how.

"i don't know how" is an unacceptable statement for such a generic
problem. please have a look at the LAMMPS documentation, have a look
at what is available and how things can be set up and then come back
with a more specific question.

axel.

3

Fix addforce can add a time-varying force.

Steve

4

Dear Steve and Axel:
Thank you very much for your guidances. I should develop the habit of firstly reading the doc and looking up the Mail-list before asking the generic question. And not come back until I confront the real technical problems.

Best regards

D. Chai