Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/93157
Author(s): | J. M. A. César de Sá P. M. A. Areias Cai Zheng |
Title: | Damage modelling in metal forming problems using an implicit non-local gradient model |
Issue Date: | 2006 |
Abstract: | 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. |
URI: | https://repositorio-aberto.up.pt/handle/10216/93157 |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
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55365.pdf Restricted Access | 974.76 kB | Adobe PDF | Request a copy from the Author(s) |
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