Damage modelling in metal forming problems using an implicit non-local gradient model

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

Authors

J. M. A. César de Sá (Author) FEUP; P. M. A. Areias (Author) Other; Cai Zheng (Author) Other

Journal

Title: Computer Methods in Applied Mechanics and Engineering

Vol. 195 No. 48

Pages: 6646-6660

ISSN: 0045-7825

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 29 Citations

Scopus - 47 Citations

COMPENDEX

INSPEC

Other information

Authenticus ID: P-004-PDW

DOI: 10.1016/j.cma.2005.02.037

Abstract (EN): A non-local gradient damage formulation, based on an improved Lemaitre damage model, is adopted in order to address the modelling of internal damage of the material in metal forming processes, like forging, or to describe processes in which fracture is a part of the process itself, as in sheet blanking or metal cutting. The damage model takes into account the effect of partial crack closure by affecting damage growth differently in compression or in tension. A non-local damage field is introduced, by means of a diffusion differential equation, dependent on a characteristic length parameter in order to avoid mesh size and orientation dependence of the model. (c) 2005 Elsevier B.V. All rights reserved.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15