A new one-point quadrature enhanced assumed strain (EAS) solid-shell element with multiple integration points along thickness - Part II: Nonlinear applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

de sousa, rja (Autor) Outra; cardoso, rpr (Autor) Outra; valente, raf (Autor) Outra; yoon, jw (Autor) Outra; gracio, jj (Autor) Outra; jorge, rmn (Autor) FEUP

Revista

Título: International Journal for Numerical Methods in Engineering

Vol. 67

Páginas: 160-188

ISSN: 0029-5981

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 85 Citações

ISI Web of Science

Scopus - 103 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

Outras Informações

ID Authenticus: P-004-JMJ

DOI: 10.1002/nme.1609

Abstract (EN): In this work the recently proposed Reduced Enhanced Solid-Shell (RESS) finite element, based on the enhanced assumed strain (EAS) method and a one-point quadrature integration scheme, is extended in order to account for large deformation elastoplastic thin-shell problems. One of the main features of this finite element consists in its minimal number of enhancing parameters (one), sufficient to circumvent the well-known Poisson and volumetric locking phenomena, leading to a computationally efficient performance when compared to other 3D or solid-shell enhanced strain elements. Furthermore, the employed numerical integration accounts for an arbitrary number of integration points through the thickness direction within a single layer of elements. The EAS formulation comprises an additive split of the Green-Lagrange material strain tensor, making the inclusion of nonlinear kinematics a straightforward task. A corotational coordinate system is used to integrate the constitutive law and to ensure incremental objectivity. A physical stabilization procedure is implemented in order to correct the element's rank deficiencies. A variety of shell-type numerical benchmarks including plasticity, large deformations and contact are carried out, and good results are obtained when compared to well-established formulations in the literature. Copyright (c) 2006 John Wiley & Sons, Ltd.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 29