This series of examples shows how to scale the penalty stiffness in contact problems. The influence of this scaling on the solution is shown by the example of a soft ring in contact with a rigid wall.
*CONTACT_ONE_WAY_SURFACE_TO_SURFACE *CONTROL_CPU *CONTROL_ENERGY *CONTROL_TERMINATION *CONTROL_TIMESTEP *DATABASE_BINARY_D3PLOT *DATABASE_BINARY_D3THDT *DATABASE_GLSTAT *DATABASE_MATSUM *DATABASE_NODOUT *DATABASE_RCFORC *ELEMENT_SHELL *END *INITIAL_VELOCITY_GENERATION *KEYWORD *MAT_ELASTIC *NODE *PART *SECTION_SHELL *TITLE
*KEYWORD *TITLE Soft Ring Impacting Rigid Wall (SF=1.0) *CONTROL_TERMINATION 0.0300000 0 0.0000000 0 0.0000000 *CONTROL_TIMESTEP 0.0000000 0.0000000 0 0.0000000 0.0000000 0 0 0 *CONTROL_ENERGY 1 2 1 1 *DATABASE_BINARY_D3PLOT 5.00000-4 0 *DATABASE_BINARY_D3THDT 1.00000-4 *DATABASE_NODOUT 1.00000-4 *DATABASE_GLSTAT 1.00000-4 *DATABASE_MATSUM 1.00000-4 *DATABASE_RCFORC 1.00000-4 *CONTROL_CPU 0.0000000 *MAT_ELASTIC 1 7.85000-8 100.00000 0.0000000 *MAT_ELASTIC 2 7.85000-8 100.00000 0.0000000 *SECTION_SHELL 1 0 0.0000000 3.0000000 0.0000000 0.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.0000000 *SECTION_SHELL 2 0 0.0000000 3.0000000 0.0000000 0.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.0000000 *PART material type # 1 (elastic) 1 1 1 0 0 0 0 0 *PART material type # 1 (elastic) 2 2 2 0 0 0 0 0 *NODE $ *ELEMENT_SHELL $ *INITIAL_VELOCITY_GENERATION $ ID STYP OMEGA VX VY VZ 1 2 0.0 2000.0 -1000.0 0.0 $ XC YC ZC NX NY NZ PHASE 0.0 0.0 0.0 0.0 0.0 0.0 0 $ INTERFACE NAME: 1 $$$ *CONTACT_ONE_WAY_SURFACE_TO_SURFACE 1 2 3 3 0 0 0 0 0.0 0.0 0.0 0.0 0.0 0 0.0 0.0 $ SFS SFM SST MST SFST SFMT FSF VSF 1.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 *END