Syntax:
fix ID group-ID indent k R x y z vx vy vz
Examples:
fix 1 all indent 10.0 3.0 0.0 0.0 15.0 0.0 0.0 -1.0
Description:
Move a spherical indenter within a simulation box. The indenter repels all atoms if touches, so it can be used to push into a block of material or as an obstacle in a flow. The magnitude of the force exerted by the indenter on each atom is given by
F(r) = - k (r - R)
where k is the specified force constant, r is the distance from the atom to the center of the indenter, and R is the radius of the indenter. The force is repulsive and F(r) = 0 for r > R. The center of the indenter moves during the simulation, based on its initial (x,y,z) position and the specified (vx,vy,vz).
Restrictions: none
Related commands: none
Default: none