A phase field model for damage in elasto-viscoplastic materials

被引：79

作者：

Shanthraj, P. ^{[1
,2
]}

Sharma, L. ^{[1
,3
]}

Svendsen, B. ^{[1
,4
]}

Roters, F. ^{[1
]}

Raabe, D. ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[2] Rhein Westfal TH Aachen, AICES, Schinkelstr 2, D-52062 Aachen, Germany

[3] Eindhoven Univ Technol, Dept Mech Engn, POB 513, NL-5600 MB Eindhoven, Netherlands

[4] Rhein Westfal TH Aachen, Mat Mech, Schinkelstr 2, D-52062 Aachen, Germany

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2016年 / 312卷

关键词：

Phase field; Viscoplasticity; Fracture; Finite deformation; BRITTLE-FRACTURE; CRACK-PROPAGATION; NUMERICAL EXPERIMENTS; VARIATIONAL APPROACH; DEFORMATION; FORMULATION; NUCLEATION; PLASTICITY; SOLIDS; DUCTILE;

D O I：

10.1016/j.cma.2016.05.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A phase field method for brittle fracture is formulated for a finite strain elasto-viscoplastic material using a novel obstacle phase field energy model. The obstacle energy model results in a crack profile with compact support, and thus gives a physically realistic description of the material behaviour at the vicinity of the crack tip. The resulting variational inequality is discretised by a finite element method, and is efficiently solved using a reduced space NEWTON method. The solution, accuracy and numerical performance of this method is compared with a conventional phase field energy model for brittle fracture through representative examples, and a significant reduction in the numerical solution cost is demonstrated. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：167 / 185

页数：19

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