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[lammps-users] Corresponding fix command & strain formula ?!?
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[lammps-users] Corresponding fix command & strain formula ?!?

From: Asadollahzadeh <niliasadollahzadeh@...24...>
Date: Sun, 22 Oct 2017 23:14:22 +0330

Hi my friends!
Can I use :
fix        1      all deform 1   y erate 0.01    units box 

and for computing strain use Almansi formula:
variable strain equal  "0.5*((((ly)^2) - ((v_L0)^2))/((ly)^2))"

with Almansi formula strain will be obtained less than 0.01 in each step & does not correspond to fix command!
I have to use Almansi strain because I work on large deformation!