1). use “velocity set” to zero the velocity for my_const;
2). put your “fix 2 my_const setforce 0. 0. 0.” at the very end of your fixes and try again.
1). use “velocity set” to zero the velocity for my_const;
2). put your “fix 2 my_const setforce 0. 0. 0.” at the very end of your fixes and try again.