Bar IV — Welcome to LS-DYNA Examples

Home » Knowledge Base » Mesh-Free Methods » Bar IV

This is a model of a Taylor bar impacting a rigid wall. The bar is discretized using SPH method. Compare ALE course for solution of the Problem with Lagrangian and Eulerian methods.

Keywords

*CONTROL_CONTACT
*CONTROL_CPU
*CONTROL_DAMPING
*CONTROL_ENERGY
*CONTROL_OUTPUT
*CONTROL_SHELL
*CONTROL_SPH
*CONTROL_STRUCTURED
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3PLOT
*DATABASE_ELOUT
*DATABASE_EXTENT_BINARY
*DATABASE_GLSTAT
*DATABASE_HISTORY_NODE
*DATABASE_HISTORY_SOLID
*DATABASE_HISTORY_SPH
*DATABASE_MATSUM
*DATABASE_NODOUT
*DATABASE_SPHOUT
*DEFINE_BOX
*ELEMENT_SOLID
*ELEMENT_SPH
*END
*EOS_GRUNEISEN
*INITIAL_VELOCITY
*KEYWORD
*MAT_ELASTIC_PLASTIC_HYDRO
*MAT_PIECEWISE_LINEAR_PLASTICITY
*MAT_PLASTIC_KINEMATIC
*NODE
*PART
*RIGIDWALL_PLANAR
*SECTION_SOLID
*SECTION_SPH
*SET_NODE_LIST_GENERATE
*TITLE

Reduced Input

  *KEYWORD
  *CONTROL_STRUCTURED
  *TITLE
  Taylor test (law3)
  *DATABASE_ELOUT
   1.00000-3
  *DATABASE_NODOUT
   1.00000-3
  *DATABASE_SPHOUT
   1.00000-3
  *DATABASE_HISTORY_SOLID
           1
  $*DATABASE_HISTORY_NODE
  $   1000001         1
  *DATABASE_HISTORY_SPH
     1001001   1003333   1002222   1003663
  *CONTROL_TERMINATION
   0.2000000         0 0.0000000         0 0.0000000
  *CONTROL_TIMESTEP
   0.0000000 0.8000000         0 0.0000000 0.0000000         0         0         0
  *CONTROL_SHELL
   0.0000000         0         0         0         9         0         0
  *CONTROL_DAMPING
           0 0.0000000 0.0000000 0.0000000 0.0000000         0 0.0000000         0
  *CONTROL_CONTACT
   0.0000000 0.0000000         0         0         0         0         0
           0         0         0         0 0.0000000         0         0         0
  *CONTROL_OUTPUT
           0         0         0         0 0.0000000         0         0
  *CONTROL_ENERGY
           1         2         1         1
  *CONTROL_SPH                           control card
           0
  *DATABASE_MATSUM
   1.00000-5 
  *DATABASE_GLSTAT
   1.00000-5 
  *DATABASE_BINARY_D3PLOT
   5.00000-3                   0
  *DATABASE_EXTENT_BINARY
           0         0         0         0         0         0         0         0
           0         0         0         0         0         0
  *CONTROL_CPU
   0.0000000
  *MAT_PIECEWISE_LINEAR_PLASTICITY
          21 8.90000-3 1.00000+5 0.3300000 180.00000 0.0000000 0.0000000 0.0000000
   0.0000000 0.0000000         0         0
   0.0000000 0.4982001 0.9982001 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
   180.00000 250.00000 280.00000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
  *MAT_ELASTIC_PLASTIC_HYDRO
           2 8.90000-3 37593.000 180.00000 0.0000000 0.0000000 0.0000000
   0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
   0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
   0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
   0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
  *EOS_GRUNEISEN
           2 3958.0000 1.4970001 0.0000000 0.0000000 2.0000000 0.0000000 0.0000000
   0.0000000
  *MAT_PLASTIC_KINEMATIC
           3 8.90000-3 1.00000+5 0.3300000 180.00000 0.0000000 0.0000000 0.0000000
  
  *SECTION_SOLID
           1         0
  *SECTION_SPH
           2 1.2000000
  *PART
  material type # 24 (elastic-plastic with failure)                               
          11         1        21         0         0         0         0         0
  *PART
  material type #10  (elastic-plastic-hydrodynamic)                               
         101         2         2         2         0         0         0         0
  *NODE
  $
  *ELEMENT_SOLID
         1      11       1       2       4       3       5       6       8       7
  *RIGIDWALL_PLANAR                                                               
           0         0         1
   0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 1.0000000 0.0000000
  *DEFINE_BOX
           1-4.0000000 4.0000000-4.0000000 4.0000000 0.0000000 21.000000
  *INITIAL_VELOCITY
         101         0         1
   0.0000000 0.0000000 -100.0000 0.0000000 0.0000000 0.0000000 0.0000000
  *NODE
  $
  *SET_NODE_LIST_GENERATE
         101
     1000001   1004425
  *ELEMENT_SPH
  $
  *END

Figures

image01.gif

image02.gif

Animated Result

Result

Download