How fix-msst control strain rate???

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1


LAMMPS (31 Aug 2011)

In my script, fix msst is defined below
fix msst all msst y 10 q 1.0e4 mu 1.0e4 tscale 0.1

After running,it output this info.

Fix MSST initial strain rate of -5.47536e-02 established by reducing temperature by factor of 1.00000e-01

I am wondering how lammps control strain rate??? Why not to set explicitly?

Thanks for any response!

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2

I’ll let Aidan address this one …

Steve

3

That's just the initial strain rate. The strain rate typically increases
from that value and then decreases again as the system reaches the steady
state. The full strain rate history can be controlled by keywords q, mu,
and tcsale.

Aidan