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This is a small idealized Eulerian bird strike model. Element formulation 12 with a single material and void is used. Mesh control is done by *ALE_REFERENCE_SYSTEM_GROUP command.

Keywords

*ALE_REFERENCE_SYSTEM_GROUP
*CONSTRAINED_LAGRANGE_IN_SOLID
*CONTROL_ALE
*CONTROL_ENERGY
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3PLOT
*DATABASE_GLSTAT
*DATABASE_MATSUM
*ELEMENT_SHELL
*ELEMENT_SOLID
*END
*EOS_LINEAR_POLYNOMIAL
*INITIAL_VELOCITY
*INITIAL_VOID_PART
*KEYWORD
*MAT_ELASTIC
*MAT_NULL
*NODE
*PART
*SECTION_SHELL
*SECTION_SOLID
*SET_NODE_LIST_GENERATE
*SET_PART_LIST
*TITLE

Reduced Input

  *KEYWORD
  *TITLE
  Bird
  *ALE_REFERENCE_SYSTEM_GROUP
           1         0         4         0         3         7         
  
  *SET_PART_LIST
           1
           4         5
  *CONSTRAINED_LAGRANGE_IN_SOLID
           3         1         1         0         2         4         2         1 
  
  
  *CONTROL_ALE
           0         1         1      -1.0
  
  *CONTROL_TERMINATION
   0.6000000
  *CONTROL_TIMESTEP
   0.0000000 0.7000000
  *CONTROL_ENERGY
           2         2         1         1
  *DATABASE_BINARY_D3PLOT
   0.0200000 
  *DATABASE_GLSTAT
   0.0010000
  *DATABASE_MATSUM
   0.0010000
  *MAT_ELASTIC
           1 1.0000000 1.00000+4 0.0000000 
  *MAT_NULL
           2     0.781     -10.0      0.10
  
  *EOS_LINEAR_POLYNOMIAL
           2       0.0      10.0
  
  *SECTION_SHELL
           1 
   0.1000000 0.1000000 0.1000000 0.1000000 
  *SECTION_SOLID
           2        12
  *INITIAL_VOID_PART
           4
  *PART
   
           3         1         1         0         0         0         0         0
  *PART
  
           4         2         2         2         0         0         0         0
  *PART
  
           5         2         2         2         0         0         0         0
  *INITIAL_VELOCITY
  95
  5.,-1.,0.,0.,0.,100.
  *SET_NODE_LIST_GENERATE
  95
  1569,3136
  *NODE
  $
  *ELEMENT_SOLID
  $
  *ELEMENT_SHELL
  $
  *END

Figures

image01.gif

image02.gif

Animated Result

Result

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