Dear all
I am performing a tensile deformation on aluminum 7075 alloy
during the deformation I am applying a fixt nvt to restrict the temperature followed by fix deform to apply the strain on the x axes, as shown below
fix 1 all nvt temp 300 300 1
fix 2 all deform 1 x erate ${srate1} units lattice remap x
however the results are showing a very sharp increase in the stress after the yield point
I am trying now to restrict the pressure in the y and z directions to zero but I’m not sure how to do that
I have tried to use the following command
fix 1 all npt temp 300 300 1 y 0 0 1 z 0 0 1 drag 1
but the results were incorrect
I have tried then this command
fix 1 all npt temp 300 300 1 aniso 0 0 1
but I got an error that said Cannot use fix npt and fix deform on same component of stress tensor (src/fix_nh.cpp:648)
Can someone please advise me on what command to use to restrict the pressure in the y and z directions
Thanks and regards
Isra