A coupled mean field Gurson-Tvergaard micromechanical model for ductile fracture in multiphase materials with large volume fraction of voids

被引：0

作者：

Van Hoof, Thibaut ^{[1
]}

Pierard, Olivier ^{[1
]}

Lani, Frederic ^{[1
]}

机构：

[1] CENAERO, Ctr Res Aeronaut, Ave Mermoz,30, B-6041 Gosselies, Belgium

来源：

10TH ESAFORM CONFERENCE ON MATERIAL FORMING, PTS A AND B | 2007年 / 907卷

关键词：

micromechanics; mean field modeling; cast iron; ductility; finite element simulations;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the framework of the European project PROHIPP (New design and manufacturing processes for high pressure fluid power product - NMP 2-CT-2004-50546), CENAERO develops a library of constitutive models used to predict the mechanical response of a family of cast iron. The present contribution focuses on one particular microstructure, corresponding to a ferrite matrix containing spheroidal graphite and isolated inclusions of pearlite. An incremental mean field homogenisation scheme such as the one developed by Doghri and Ouaar [1] is used. In the present application, the ferrite matrix is described by a Gurson type [2] constitutive law (porous plasticity) while the pearlite inclusions are assumed to obey the classical isotropic J(2) plasticity. The predictions of the micromechanical model are compared to the results of Finite Element simulations performed on three-dimensional representative volume elements (RVEs).

引用

页码：82 / +

页数：2