I have created a long block with three groups,of same atoms. keeping one end group of atoms stationary, i want to rotate the opposite end group of atoms by specified angle to see the effect of twist on the stresses induced in the middle group of atoms. I am trying this by using fix 6 leftside move rotate 0.0 4.0 4.0 1.0 0.0 0.0 5.0 command. How can i control the angle of twist and omega ? What is the difference of period of rotation (time units) and total time for which that particular fix is run for?
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