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Thinning of a strip is modeled with four node shell elements. Adaptive mesh refinement with three refinement levels is used. Compare example thinning1.k for usage of three node elements.

Keywords

*BOUNDARY_PRESCRIBED_MOTION_NODE
*CONTROL_ADAPTIVE
*CONTROL_CONTACT
*CONTROL_CPU
*CONTROL_DAMPING
*CONTROL_ENERGY
*CONTROL_OUTPUT
*CONTROL_SHELL
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3PLOT
*DATABASE_BINARY_D3THDT
*DATABASE_EXTENT_BINARY
*DEFINE_CURVE
*ELEMENT_SHELL
*END
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*NODE
*PART
*SECTION_SHELL
*TITLE

Reduced Input

  *KEYWORD
  *control_adaptive
  $        |         |         |         |         |         |         |         |
       2.e-3    20.                      3                                       1
                     1                          .095
  *PART
   
           1         1         1         0         0         0         1         0
  *TITLE
  adapt based on shell thinnig                                            
  *CONTROL_TERMINATION
   0.0199800         0 0.0000000         0 0.0000000
  *CONTROL_TIMESTEP
   0.0000000 0.6000000         0 0.0000000 0.0000000         0         0         0
  *CONTROL_SHELL
   0.0000000         0         0         1         0         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
  *DATABASE_BINARY_D3PLOT
   2.00000-4                   0
  *DATABASE_BINARY_D3THDT
   100.00000
  *DATABASE_EXTENT_BINARY
           0         0         0         0         0         0         0         0
           0         0         0         0         0         0
  *CONTROL_CPU
   0.0000000
  *MAT_PLASTIC_KINEMATIC
           1 7.00000-3 3.00000+6 0.3000000 40000.000 2000.0000 0.0000000
   0.0000000 0.0000000 0.0000000
  *SECTION_SHELL
           1         0 0.0000000 0.0000000 0.0000000 0.0000000
   0.1000000 0.1000000 0.1000000 0.1000000 0.0000000
  *NODE
  $
  *ELEMENT_SHELL
  $
  *DEFINE_CURVE
           1         0 0.0000000 0.0000000 0.0000000 0.0000000
        0.00000000E+00      0.00000000E+00
        2.19999999E-02      1.70000002E+00
  *BOUNDARY_PRESCRIBED_MOTION_NODE
  $
  *END

Figures

image01.gif

image02.gif

Animated Result

Result

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