A simply supported plate of equal side length is subjected to a normal pressure on the top face. Differences between Belytschko-Tsai-Shell (elform 2), Hughes-Liu-Shell (elform 6) and fully integrated Shell (elform 16) can be studied. Example 1 from Introductory Manual for LS-DYNA Users by James M. Kennedy.
*CONTROL_IMPLICIT_GENERAL *CONTROL_IMPLICIT_SOLUTION *CONTROL_SHELL *CONTROL_TERMINATION *DATABASE_BINARY_D3PLOT *DATABASE_ELOUT *DATABASE_HISTORY_SHELL *DEFINE_CURVE *ELEMENT_SHELL *END *KEYWORD *LOAD_SEGMENT *MAT_ELASTIC *NODE *PART *SECTION_SHELL *TITLE
*KEYWORD *TITLE Skew Plate with Normal Pressure (thin shell mesh) *CONTROL_IMPLICIT_GENERAL 1 0.0 2 1 2 *CONTROL_IMPLICIT_SOLUTION 1 11 15 0.001000 0.010000 0.0 0.900000 1.000000 2 1 1 2 0 1 0.0 1 2 *CONTROL_SHELL 20.00000 0 0 0 2 2 1 0.0 1 *CONTROL_TERMINATION 1.000000 0 0.0 0.0 0.0 *DATABASE_ELOUT 1.0E-01 *DATABASE_BINARY_D3PLOT 0.100000 *DATABASE_HISTORY_SHELL 6 7 10 11 *DEFINE_CURVE 1 0 0.0 0.0 0.0 0.0 0.0 0.0 1.00000000 700.0000000 *ELEMENT_SHELL *NODE *PART 1 1 1 *SECTION_SHELL 1 2 0.0 5 0 0.0 0.010000 0.010000 0.010000 0.010000 0 0.0 *MAT_ELASTIC 1 7800.0002.1000e+11 0.300000 0.0 0.0 0.0 *LOAD_SEGMENT 1 1.000000 0.0 1 6 7 2 1 1.000000 0.0 2 7 8 3 1 1.000000 0.0 3 8 9 4 1 1.000000 0.0 4 9 10 5 1 1.000000 0.0 6 11 12 7 1 1.000000 0.0 7 12 13 8 1 1.000000 0.0 8 13 14 9 1 1.000000 0.0 9 14 15 10 1 1.000000 0.0 11 16 17 12 1 1.000000 0.0 12 17 18 13 1 1.000000 0.0 13 18 19 14 1 1.000000 0.0 14 19 20 15 1 1.000000 0.0 16 21 22 17 1 1.000000 0.0 17 22 23 18 1 1.000000 0.0 18 23 24 19 1 1.000000 0.0 19 24 25 20 *END