An engineering solution for mesh size effects in the simulation of delamination using cohesive zone models

• Type: Article in International Scientific Journal
• Date: 2007

Authors

A. Turon (Author) Other; C.G. Dávila (Author) Other; P. P. Camanho (Author) FEUP; J. Costa (Author) Other

Journal

Title: Engineering Fracture Mechanics

Vol. 74 No. 10

Pages: 1665-1682

ISSN: 0013-7944

Publisher: Elsevier

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INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Mechanical engineering

CORDIS: Technological sciences > Engineering > Materials engineering

Other information

Authenticus ID: P-004-90K

DOI: 10.1016/j.engfracmech.2006.08.025

Abstract (EN): A methodology to determine the constitutive parameters for the simulation of progressive delamination is proposed. The procedure accounts for the size of a cohesive finite element and the length of the cohesive zone to ensure the correct dissipation of energy. In addition, a closed-form expression for estimating the minimum penalty stiffness necessary for the constitutive equation of a cohesive finite element is presented. It is shown that the resulting constitutive law allows the use of coarser finite element meshes than is usually admissible, which renders the analysis of large-scale progressive delamination problems computationally tractable.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18