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F. Gruttmann, W. Wagner, "Delamination Analysis of Thin Composite Structures using a Multi-Director Formulation", in B.H.V. Topping, (Editor), "Advances in the Analysis and Design of Composites", Civil-Comp Press, Edinburgh, UK, pp 51-59, 1996. doi:10.4203/ccp.41.3.1

Abstract

A numerical model for the nonlinear analysis of laminated shells is presented. The developed isoparametric layered shell element is based on a multi-director formulation. Piecewise polynomial functions are used to interpolate the displacement field through the thickness. Thus the developed element is able to predict the complete stress state. Within a nonlinear static analysis onset of delamination is described by exploiting a stress based fracture criterion between adjacent layers. Additional nodal variables are introduced to describe the vector of crack opening displacement. Crack propagation and the final delamination zone for a prescribed load level is achieved by fulfilment of the weak form of equilibrium and of the fracture criterion.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 41 ADVANCES IN THE ANALYSIS AND DESIGN OF COMPOSITES Edited by: B.H.V. Topping Paper III.1 Delamination Analysis of Thin Composite Structures using a Multi-Director Formulation F. Gruttmann and W. Wagner Institute of Statics, University of Karlsruhe (TH), Karlsruhe, Germany doi:10.4203/ccp.41.3.1 purchase the full-text of this paper Full Bibliographic Reference for this paper F. Gruttmann, W. Wagner, "Delamination Analysis of Thin Composite Structures using a Multi-Director Formulation", in B.H.V. Topping, (Editor), "Advances in the Analysis and Design of Composites", Civil-Comp Press, Edinburgh, UK, pp 51-59, 1996. doi:10.4203/ccp.41.3.1 Abstract A numerical model for the nonlinear analysis of laminated shells is presented. The developed isoparametric layered shell element is based on a multi-director formulation. Piecewise polynomial functions are used to interpolate the displacement field through the thickness. Thus the developed element is able to predict the complete stress state. Within a nonlinear static analysis onset of delamination is described by exploiting a stress based fracture criterion between adjacent layers. Additional nodal variables are introduced to describe the vector of crack opening displacement. Crack propagation and the final delamination zone for a prescribed load level is achieved by fulfilment of the weak form of equilibrium and of the fracture criterion. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £58 +P&P)
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