Matrix or Vector | Shape Functions | Integration Points | |
---|---|---|---|

Stiffness and Stress Stiffness Matrices; and Thermal Load Vector | Equation 11–214, Equation 11–215, and Equation 11–216 | In-plane: | |

Mass Matrix | Same as stiffness matrix | Same as stiffness matrix | |

Pressure Load Vector | Quad | Equation 11–69 and Equation 11–70 | 2 x 2 |

Triangle | Equation 11–49 and Equation 11–50 | 3 |

Load Type | Distribution |
---|---|

Element Temperature | Bilinear in-plane of element, linear thru each layer |

Nodal Temperature | Trilinear thru element |

Pressure | Bilinear across each face |

Structures describes the derivation of structural element matrices and load vectors as well as stress evaluations. General Element Formulations gives the general element formulations used by this element.

SOLSH190 is a 3-D solid element free of locking in bending-dominant situations. Unlike shell elements, SOLSH190 is compatible with general 3-D constitutive relations and can be connected directly with other continuum elements.

SOLSH190 utilizes a suite of special kinematic formulations, including assumed strain method (Bathe and Dvorkin([98])) to overcome locking when the shell thickness becomes extremely small.

SOLSH190 employs enhanced strain formulations (Simo and Rifai([319]), Simo et al.([321])) to improve the accuracy in in-plane bending situations. The satisfaction of the in-plane patch test is ensured. Incompatible shape functions are used to overcome the thickness locking.