### Abstract

A simple, explicit formulation of the stiffness matrix for an anisotropic, 3-node, thin triangular, flat shell element in global coordinates is presented. An Allman triangle is used for membrane stiffness. The membrane stiffness matrix is explicitly derived by applying an Allman transformation to a Felippa 6-node linear strain triangle (LST). Bending stiffness is incorporated by the use of a discrete Kirchhoff triangle (DKT) bending triangle. Stiffness terms resulting from anisotropic membrane-bending coupling are included by integrating, in area coordinates, membrane and bending strain-displacement matrices.

Original language | English |
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Pages | 249-255 |

Number of pages | 7 |

State | Published - 1991 |

Event | Proceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition - Houston, TX, USA Duration: Jan 20 1991 → Jan 23 1991 |

### Conference

Conference | Proceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition |
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City | Houston, TX, USA |

Period | 01/20/91 → 01/23/91 |

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## Cite this

Ertas, A., Krafcik, J. T., & Ekwaro-Osire, S. (1991).

*Explicit formulation of an anisotropic Allman/DKT 3-node thin triangular flat shell elements*. 249-255. Paper presented at Proceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition, Houston, TX, USA, .