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A numerical method for the thermal-shock crack problems of nonhomogeneous materials with inclusions based on an interaction energy integral method
Zhang, YY; Guo, LC; Huang, K; Bai, XM; Pang, JC; Zhang, ZF; Guo, LC (reprint author), Harbin Inst Technol, Dept Astronaut Sci & Mech, Harbin 150001, Heilongjiang, Peoples R China.
2018-03-01
Source PublicationENGINEERING FRACTURE MECHANICS
ISSN0013-7944
Volume190Pages:159-174
AbstractNonhomogeneous materials, especially for particulate composites, usually contain defects such as voids and debonding introduced during manufacturing process. Due to existence of defects, nonhomogeneous materials are prone to fracture failure under thermal shock loading. This paper aims to develop a set of methods for analysing the thermal-shock crack problems of nonhomogeneous material plates (NMPs) with inclusions. A modified domain-independent interaction energy integral method (IEIM) is developed to obtain the mixed-mode transient thermal stress intensity factors (TSIFs). Then the IEIM, the extended finite element method (XFEM) and the finite difference method (FDM) are combined together to address a thermal-shock crack problem of a NMP with an inclusion. With the methods, the influences of the inclusion on the transient mixed-mode TSIFs are investigated. The results show that the present method can be applied to solve the thermal shock crack problem effectively. Furthermore, the relations between the mixed-mode TSIFs and model parameters including material constants as well as locations of the inclusion are established. It is found that the thermal expansion coefficient and Young's modulus of the inclusion affect the mixed-mode TSIFs in a dominant manner in comparison with other factors such as the specific heat, heat conductivity and density of the inclusion affect the TSIFs slightly. Specifically, the critical normalized distance, beyond which the influence of the inclusion on the mixed-mode TSIFs is negligible, is revealed. The present work will be significant for fracture mechanics analysis and design of nonhomogeneous materials with inclusions. (C) 2017 Elsevier Ltd. All rights reserved.; Nonhomogeneous materials, especially for particulate composites, usually contain defects such as voids and debonding introduced during manufacturing process. Due to existence of defects, nonhomogeneous materials are prone to fracture failure under thermal shock loading. This paper aims to develop a set of methods for analysing the thermal-shock crack problems of nonhomogeneous material plates (NMPs) with inclusions. A modified domain-independent interaction energy integral method (IEIM) is developed to obtain the mixed-mode transient thermal stress intensity factors (TSIFs). Then the IEIM, the extended finite element method (XFEM) and the finite difference method (FDM) are combined together to address a thermal-shock crack problem of a NMP with an inclusion. With the methods, the influences of the inclusion on the transient mixed-mode TSIFs are investigated. The results show that the present method can be applied to solve the thermal shock crack problem effectively. Furthermore, the relations between the mixed-mode TSIFs and model parameters including material constants as well as locations of the inclusion are established. It is found that the thermal expansion coefficient and Young's modulus of the inclusion affect the mixed-mode TSIFs in a dominant manner in comparison with other factors such as the specific heat, heat conductivity and density of the inclusion affect the TSIFs slightly. Specifically, the critical normalized distance, beyond which the influence of the inclusion on the mixed-mode TSIFs is negligible, is revealed. The present work will be significant for fracture mechanics analysis and design of nonhomogeneous materials with inclusions. (C) 2017 Elsevier Ltd. All rights reserved.
description.department[zhang, yanyan ; guo, licheng ; huang, kai ; bai, xiaoming] harbin inst technol, dept astronaut sci & mech, harbin 150001, heilongjiang, peoples r china ; [zhang, yanyan ; pang, jianchao ; zhang, zhefeng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [bai, xiaoming] sci & technol reactor syst design technol lab, chengdu 610000, sichuan, peoples r china ; [zhang, yanyan] shenyang univ, shenyang 110000, liaoning, peoples r china
KeywordFunctionally Graded Materials Stress Intensity Factors Hyperbolic Heat-conduction Finite-element Method Fracture-analysis Divertor Plate Behavior Interfaces Resistance Strip
Subject AreaMechanics
Funding OrganizationNSFC [11322217, 11432005]; General Project for Department of Liaoning Education [L2015364]; Natural Science Foundation of Liaoning [20170520346]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79468
Collection中国科学院金属研究所
Corresponding AuthorGuo, LC (reprint author), Harbin Inst Technol, Dept Astronaut Sci & Mech, Harbin 150001, Heilongjiang, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, YY,Guo, LC,Huang, K,et al. A numerical method for the thermal-shock crack problems of nonhomogeneous materials with inclusions based on an interaction energy integral method[J]. ENGINEERING FRACTURE MECHANICS,2018,190:159-174.
APA Zhang, YY.,Guo, LC.,Huang, K.,Bai, XM.,Pang, JC.,...&Guo, LC .(2018).A numerical method for the thermal-shock crack problems of nonhomogeneous materials with inclusions based on an interaction energy integral method.ENGINEERING FRACTURE MECHANICS,190,159-174.
MLA Zhang, YY,et al."A numerical method for the thermal-shock crack problems of nonhomogeneous materials with inclusions based on an interaction energy integral method".ENGINEERING FRACTURE MECHANICS 190(2018):159-174.
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