Continuous-discontinuous formulation for ductile fracture

被引：22

作者：

Ramos Seabra, Mariana Rita ^{[1
]}

Cesar de Sa, Jose M. A. ^{[1
]}

Andrade, Filipe X. C. ^{[1
]}

Pires, Francisco F. M. A. ^{[1
]}

机构：

[1] Univ Porto, IDMEC Inst Mech Engn, Fac Engn, P-4200465 Oporto, Portugal

来源：

INTERNATIONAL JOURNAL OF MATERIAL FORMING | 2011年 / 4卷 / 03期

关键词：

XFEM; Damage; Fracture; FINITE-ELEMENT-METHOD; CRACK-GROWTH; DAMAGE MODEL; STRAIN PROBLEMS; LEVEL SETS; ENRICHMENT;

D O I：

10.1007/s12289-010-0991-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this contribution, a continuum-discontinuum model for ductile failure is presented. The degradation of material properties through deformation is described by a Continuum Damage Mechanics model, which uses a non-local integral formulation to avoid mesh dependence. In the final stage of failure, the damaged zone is replaced by a macro crack for a more realistic representation of the phenomenon. The inclusion of the discontinuity surfaces is performed by the XFEM and Level Set Method to avoid the spurious damage growth typical of this class of models.

引用

页码：271 / 281

页数：11

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