Use the Prescribed Deformation node (

) to explicitly define the deformation of the mesh in one frame relative to another. Note that the Solid Mechanics interface has built-in behavior corresponding a Prescribed Deformation node under 
Moving Mesh.
 
    Specify expressions that define the deformation in the Prescribed deformation fields (
dx, 
dy, and 
dz for 3D models, for example) (SIĀ unit: m). The default gives no mesh displacement.