Impact A

This models a water jet impacting a rigid plate. For the fluid-structure interaction an appropriate penalty stiffness is defined. The contact pressure is highly oscillating especially at the beginning and reaching an approximately stationary level later.

*ALE_MULTI-MATERIAL_GROUP
*BOUNDARY_PRESCRIBED_MOTION_SET
*CONSTRAINED_LAGRANGE_IN_SOLID
*CONTROL_ALE
*CONTROL_HOURGLASS
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3PLOT
*DATABASE_FSI
*DEFINE_CURVE
*ELEMENT_SHELL
*ELEMENT_SOLID
*END
*EOS_GRUNEISEN
*INITIAL_VELOCITY_GENERATION
*KEYWORD
*MAT_ELASTIC
*MAT_NULL
*MAT_VACUUM
*NODE
*PART
*SECTION_SHELL
*SECTION_SOLID
*SET_NODE_LIST
*SET_PART_LIST
*SET_SEGMENT

  *KEYWORD
  *CONTROL_HOURGLASS
  1, 1.0e-3
  *DATABASE_FSI
  0.00001
  1,1,2
  *SET_SEGMENT
  1
  1498, 1519, 1520, 1499
  *DATABASE_BINARY_D3PLOT
  0.0001
  *CONTROL_TERMINATION
  0.02
  *CONTROL_TIMESTEP
  0, 0.8
  *CONTROL_ALE
  0, 1, 1, -1.0
  
  *ALE_MULTI-MATERIAL_GROUP
  1, 1
  2, 1
  *CONSTRAINED_LAGRANGE_IN_SOLID
  3, 1, 1, 0, 4, 4, 1, 1
  0, 0, 0, 0, 0, 0, 0
  *SET_PART_LIST
  1
  1, 2
  *INITIAL_VELOCITY_GENERATION
  1, 2, 0, 0, -20.0, 0
  
  *BOUNDARY_PRESCRIBED_MOTION_SET
  1, 2, 0, 1
  *SET_NODE_LIST
  1
  517, 528, 989, 990, 991, 992, 993, 994
  995, 996, 997, 998, 999, 1000, 1001, 1002
  1003, 1004, 1005, 1006, 1007, 1008
  *DEFINE_CURVE
  1
  0.0, -20.0
  1.0, -20.0
  *MAT_NULL
  1, 1000.0
  *EOS_GRUNEISEN
  1, 1500.0
  
  *MAT_VACUUM
  2, 0.01
  *MAT_ELASTIC
  3, 8000.0, 1.0e11
  *SECTION_SOLID
  1, 11
  *SECTION_SOLID
  2, 11
  *SECTION_SHELL
  3, 0
  0.01, 0.01, 0.01, 0.01
  *PART
  
  1, 1, 1, 1
  *PART
  
  2, 2, 2
  *PART
  
  3, 3, 3
  *NODE
  $
  *ELEMENT_SOLID
  $
  *ELEMENT_SHELL
  $
  *END