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fix indent command

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