Explicit formulation of an anisotropic Allman/DKT 3-node thin triangular flat shell elements

A. Ertas, J. T. Krafcik, S. Ekwaro-Osire

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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 languageEnglish
Pages249-255
Number of pages7
StatePublished - 1991
EventProceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition - Houston, TX, USA
Duration: Jan 20 1991Jan 23 1991

Conference

ConferenceProceedings of the 14th Annual Energy-Sources Technology Conference and Exhibition
CityHouston, TX, USA
Period01/20/9101/23/91

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    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, .