A mixed mode phase-field model of ductile fracture

被引：35

作者：

Huber, William ^{[1
]}

Zaeem, Mohsen Asle ^{[1
]}

机构：

[1] Colorado Sch Mines, Dept Mech Engn, Golden, CO 80401 USA

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2023年 / 171卷

关键词：

Ductile fracture; Phase-field model; Mixed Mode; CRACK-PROPAGATION; FAILURE CRITERIA; BRITTLE-FRACTURE; DAMAGE MODEL; PLASTICITY; STRAIN; FORMULATION; PREDICTION; FRAMEWORK; BALANCE;

D O I：

10.1016/j.jmps.2022.105123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the first mixed mode phase-field model of ductile fracture. The contribution of crack opening and shearing deformations to the propagation of a crack is expressed by introducing two phase fields. Constitutive relations are then introduced to couple and distinguish these phase fields. Special attention is given to the maximum shear stress and its effect on the development of fractures. The proposed model is validated by tensile testing experiments found in the literature on Al 2024 T-351. Model predictions of the crack path and load-displacement response are compared to a plane-strain tension experiment, a round bar tension experiment and a notched round bar tension experiment. The model is shown to accurately capture the slant and cup-cone crack paths as well as force-displacement curves.

引用

页数：18

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