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

• Type: Article in International Scientific Journal
• Date: 2006

Authors

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

Journal

Title: International Journal for Numerical Methods in Engineering

Vol. 67

Pages: 160-188

ISSN: 0029-5981

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 85 Citations

ISI Web of Science

Scopus - 103 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Engineering > Mechanical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 29