Integration Rules
Integration Rule entities specify user-defined integration points for beam and shell elements.
IRID refers to the integration rule identification number on *SECTION_BEAM and *SECTION_SHELL cards respectively. Quadrature rules in these cards need to be specified as a negative number. The absolute value of the negative number refers to the user-defined integration rule number. Positive rule numbers refer to the built-in quadrature rules within LS-DYNA.
Integration Rules entities have a display state, on or off, which controls the display of the entity in the graphics area.LS-DYNA Cards
| Card | Description |
|---|---|
| *INTEGRATION_BEAM | Define user-defined through the thickness integration rules for the beam element. |
| *INTEGRATION_SHELL | Define user-defined through the thickness integration rules for the shell element. |