Generate -contactspring springs for nodes which have the same position in space. This can be used to connect these nodes with spring elements, so to model a contact area. Only nodes located on the specified geometry entity will be used.
The generated springs will get an element_group record with value element_group. So in that element group you can put the properties of the contact springs.
With the control_mesh_generate_contactspring_element record you can set between which elements the contactsprings should be generated. By example use -quad4 and -trussbeam if you want to generate contactsprings between those elements.