# Volume Fraction B — Welcome to LS-DYNA Examples

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This is an Eulerian mesh and a rigid plate. The keyword *INITIAL_VOLUME_FRACTION_GEOMETRY is used to define a metal cylinder inside the mesh. The cylinder is assigned an initial velocity and impacts the rigid plate.

## Keywords

```*ALE_MULTI-MATERIAL_GROUP
*CONSTRAINED_LAGRANGE_IN_SOLID
*CONTROL_ALE
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3PLOT
*DEFINE_CURVE
*ELEMENT_SHELL
*ELEMENT_SOLID
*END
*INITIAL_VELOCITY_GENERATION
*INITIAL_VOLUME_FRACTION_GEOMETRY
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*MAT_VACUUM
*NODE
*PART
*SECTION_SHELL
*SECTION_SOLID```

## Reduced Input

```  *KEYWORD
*CONTROL_TERMINATION
1.0e-3
*CONTROL_TIMESTEP
0.0, 0.8
*DATABASE_BINARY_D3PLOT
1.0e-4
*CONTROL_ALE
0, 1, 2, -1.0

*ALE_MULTI-MATERIAL_GROUP
1, 1
2, 1
*MAT_VACUUM
1, 1.0
*MAT_PLASTIC_KINEMATIC
2, 8000.0, 200.0e9, 0.3, 200.0e6

*MAT_PLASTIC_KINEMATIC
3, 8000.0, 200.0e9, 0.3, 200.0e6

*SECTION_SOLID
1, 11
*SECTION_SOLID
2, 11
*SECTION_SHELL
3, 0
0.1, 0.1, 0.1, 0.1
*PART

1, 1, 1
*PART

2, 2, 2
*PART

3, 3, 3
*INITIAL_VOLUME_FRACTION_GEOMETRY
1, 1, 1
4, 0, 2
0.03, 0.0, 0.0, 0.18, 0.0, 0.0,  0.1, 0.1
*INITIAL_VELOCITY_GENERATION
1, 2, 0.0, 200.0, 0.0, 0.0

*CONSTRAINED_LAGRANGE_IN_SOLID
3, 1, 1, 1, 4, 4, 2, 1
0, 0, -1

*DEFINE_CURVE
1
0.0, 0.0
1.0e-3, 1.0e9
*NODE
\$
*ELEMENT_SOLID
\$
*ELEMENT_SHELL
\$
*END```