Application of a gradient ductile damage model to metal forming processes including crack propagation and mesh adaptivity

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The entire process of ductile failure is modelled, from the initiation of damage to crack propagation. The microscopic material degradation mechanisms which trigger cracks are modelled by a softening elastoplastic behaviour. Mesh objectivity and length scale effects are accounted for by a gradient enhancement. The two governing partial differential equations, i.e. equilibrium and a nonlocal averaging equation, are solved in a staggered manner, which renders a very simple implementation in existing finite element codes. Adaptive remeshing is used to optimise the use of finite elements, so that finer elements are used in the regions of high strain localisation. Upon complete material failure cracks are introduced via remeshing. A number of metal forming simulations are shown which illustrate the main model features.

Original languageEnglish
Title of host publication11th International Conference on Fracture 2005, ICF11
Pages1160-1164
Number of pages5
Volume2
Publication statusPublished - 2005
Event11th International Conference on Fracture (ICF 2005) - Turin, Italy
Duration: 20 Mar 200525 Mar 2005
Conference number: 11

Conference

Conference11th International Conference on Fracture (ICF 2005)
Abbreviated titleICF 2005
CountryItaly
CityTurin
Period20/03/0525/03/05

Fingerprint Dive into the research topics of 'Application of a gradient ductile damage model to metal forming processes including crack propagation and mesh adaptivity'. Together they form a unique fingerprint.

Cite this