# Elliptical Thick Plate (coarse mesh) — Welcome to LS-DYNA Examples

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An elliptical thick plate is subjected to a normal pressure on the top face. Differences between constant stress solid (elform 1), fully integrated S/R solid (elforms 2 and -1) and 8 point enhanced strain solid (elform 18) can be studied. Example 3 from Introductory Manual for LS-DYNA Users by James M. Kennedy.

## Keywords

```*CONTROL_IMPLICIT_GENERAL
*CONTROL_IMPLICIT_SOLUTION
*CONTROL_IMPLICIT_SOLVER
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_ELOUT
*DATABASE_EXTENT_BINARY
*DATABASE_HISTORY_SOLID
*DEFINE_CURVE
*ELEMENT_SOLID
*END
*KEYWORD
*MAT_ELASTIC
*NODE
*PART
*SECTION_SOLID
*TITLE```

## Reduced Input

```*KEYWORD
*TITLE
Elliptical Thick Plate under Normal Pressure (coarse mesh)
*CONTROL_IMPLICIT_GENERAL
1  0.100000         2         1         2
*CONTROL_IMPLICIT_SOLUTION
1        11        15  0.001000  0.010000   1.00e+10 0.900000  1.00e-10
*CONTROL_IMPLICIT_SOLVER
4         2         2         0         1       0.0         1       0.0
2
*CONTROL_TERMINATION
1.000000         0       0.0       0.0       0.0
*DATABASE_ELOUT
1.0000E-9         0         0
*DATABASE_BINARY_D3PLOT
1.000000
*DATABASE_EXTENT_BINARY

8                 1.0                                  stress    stress
*DATABASE_HISTORY_SOLID
1         5         9        13
*DEFINE_CURVE
1         0       0.0       0.0       0.0       0.0
0.0                 0.0
1.00000000       1.0000000e+06
*ELEMENT_SOLID
*NODE
*PART
1         1         1
*SECTION_SOLID
1         1         1
*MAT_ELASTIC
1  7800.0002.1000e+11  0.300000       0.0       0.0       0.0
1  1.000000       0.0        29        35        37        31
1  1.000000       0.0        31        37        39        33
1  1.000000       0.0        35        41        43        37
1  1.000000       0.0        37        43        45        39
1  1.000000       0.0        33        39        69        65
1  1.000000       0.0        65        69        71        67
1  1.000000       0.0        39        45        73        69
1  1.000000       0.0        69        73        75        71
1  1.000000       0.0        67        71        99        95
1  1.000000       0.0        95        99       101        97
1  1.000000       0.0        71        75       103        99
1  1.000000       0.0        99       103       105       101
1  1.000000       0.0        41       125       127        43
1  1.000000       0.0        43       127       129        45
1  1.000000       0.0       125       131       133       127
1  1.000000       0.0       127       133       135       129
1  1.000000       0.0        45       129       149        73
1  1.000000       0.0        73       149       151        75
1  1.000000       0.0       129       135       153       149
1  1.000000       0.0       149       153       155       151
1  1.000000       0.0        75       151       169       103
1  1.000000       0.0       103       169       171       105
1  1.000000       0.0       151       155       173       169
1  1.000000       0.0       169       173       175       171
*END
```