XFEM analysis of a 2D cracked finite domain under thermal shock based on Green-Lindsay theory

被引：28

作者：

Zarmehri, Navid Roshani ^{[1
]}

Nazari, Mohammad Bagher ^{[1
]}

Rokhi, Masoud Mahdizadeh ^{[2
]}

机构：

[1] Shahrood Univ Technol, Fac Mech Engn, Shahrood, Iran

[2] Shahrood Univ Technol, Fac Elect & Robot Engn, Shahrood, Iran

来源：

ENGINEERING FRACTURE MECHANICS | 2018年 / 191卷

关键词：

Thermal shock; Green-Lindsay model; eXtended Finite Element Method (XFEM); Interaction integral; Stress intensity factors; BOUNDARY-ELEMENT METHOD; FUNCTIONALLY GRADED MATERIALS; STRESS INTENSITY FACTOR; LORD-SHULMAN THEORY; COUPLED THERMOELASTICITY; TRANSIENT ANALYSIS; RELAXATION-TIMES; HEAT WAVES; 2ND SOUND; FRACTURE;

D O I：

10.1016/j.engfracmech.2017.12.039

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper, the extended finite element method is implemented to extract stress intensity factors (SIFs) for a stationary crack in an isotropic 2D finite domain under thermal shock. The fully coupled generalized thermoelasticity theory based on Green-Lindsay (G-L) model is considered. The interaction integral is developed to compute the stress intensity factors in which the dissipated part of the strain energy density is accounted to preserve domain-independency of. The Newmark time integration scheme is used to solve semidiscrete governing equations. According to the results, the speed of stress and temperature waves controls the time variations of stress intensity factors especially at early times of the thermal shock. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：286 / 299

页数：14

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