Strong displacement discontinuities and Lagrange multipliers in the analysis of finite displacement fracture problems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

P. M. A. Areias (Autor) Outra; J. M. A. César de Sá (Autor) FEUP; C. A. Conceição António (Autor) FEUP; J. A. S. A. O. Carneiro (Autor) Outra; V. M. P. Teixeira (Autor) Outra

Revista

Título: Computational Mechanics

Vol. 35 Nº 1

Páginas: 54-71

ISSN: 0178-7675

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 21 Citações

Scopus - 25 Citações

Outras Informações

ID Authenticus: P-000-7ED

DOI: 10.1007/s00466-004-0603-z

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 18