Nonlinear finite element analysis of orthotropic and prestressed membrane structures

Authors:
J. G. Valdés;J. Miquel;E. Oñate
Affiliations:
International Center for Numerical Methods in Engineering (CIMNE), Technical University of Catalunya, Gran Capitán s/n, Campus Nord, 08034 Barcelona, Spain;International Center for Numerical Methods in Engineering (CIMNE), Technical University of Catalunya, Gran Capitán s/n, Campus Nord, 08034 Barcelona, Spain;International Center for Numerical Methods in Engineering (CIMNE), Technical University of Catalunya, Gran Capitán s/n, Campus Nord, 08034 Barcelona, Spain
Venue:
Finite Elements in Analysis and Design
Year:
2009

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Abstract

A new methodology for the geometrically nonlinear analysis of orthotropic membrane structures using triangular finite elements is presented. The approach is based on writing the constitutive equations in the principal fiber orientation of the material. A direct consequence of the fiber orientation strategy is the possibility to analyze initially out-of-plane prestressed membrane structures. An algorithm to model wrinkling behavior is also described. Examples of application to a number of membrane structures are presented.