Please use this identifier to cite or link to this item: http://hdl.handle.net/10216/95870
Author(s): P. M. A. Areias
J. M. A. César de Sá
C. A. Conceição António
J. A. S. A. O. Carneiro
V. M. P. Teixeira
Title: Strong displacement discontinuities and Lagrange multipliers in the analysis of finite displacement fracture problems
Issue Date: 2004
Abstract: The finite displacement formulation of a quadrilateral element containing an embedded displacement discontinuity is presented. The formulation is based on the kinematically optimal technique, and some known defects of this technique are addressed. Lagrange multipliers are adopted to ensure the correct crack closure prior to initiation. Six additional degrees of freedom in each element allow the representation of the two states of the crack. A classical enhanced strain technique is employed to improve the bending performance of the element. Numerical examples illustrate both the robustness and the accuracy of the proposed solutions.
URI: http://hdl.handle.net/10216/95870
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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