New Algorithm for the Thermo-Mechanical Coupled Frictional Contact Problem of Polycrystalline Aggregates Based on Plastic Slip Theory

	New Algorithm for the Thermo-Mechanical Coupled Frictional Contact Problem of Polycrystalline Aggregates Based on Plastic Slip Theory
	Chen, Yun 1; Cui, Junzhi2 ; Nie, Yufeng 1; Li, Yiqiang 1
	2011-06-01
发表期刊	CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
ISSN	1526-1492
卷号	76 期号:3-4 页码:189-206
摘要	This paper presents a new numerical algorithm for thermal-mechanical coupled analysis of polycrystalline aggregates based on the plastic slip theory inside crystals and the frictional contact on their interfaces. It involves the mechanics and heat conduction behaviors caused by both force loads and temperature changing within crystal and contact interfaces between crystals. Firstly, the constitutive relationship inside single crystal, and the moment equations and energy equations are derived by means of rate-dependent plastic deformation theory and the formulation of elastic-plastic tangent modulus depended on temperature. Secondly, the contact conditions with friction, including frictional heat generation and heat transfer across the contact interface, are discussed. And then based on the ABAQUS software, the subroutines to calculate thermo-mechanical behaviors of polycrystalline copper are coded, and a polycrystalline body composed by four grains within 16 contact interfaces is simulated under the torsion and bending loadings. The numerical results show that crack propagation path are associated with loading ways and temperature change through the contact interfaces in addition to the friction heat generation. The displacement jumps are related to the contact pressure. The modeling approach presented in this work can be extended to more complicated systems with the interaction of a number of grains.
关键词	Polycrystalline aggregates Friction contact Thermo-mechanical coupled Crystal slip theory
语种	英语
资助项目	Special Funds for National Basic Research Program of China (973 Program)[2010CB832702] ; National Natural Science Foundation of China[90916027] ; Center for high performance computing of Northwestern Polytechnic University
WOS研究方向	Engineering ; Mathematics
WOS类目	Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications
WOS记录号	WOS:000296827900003
出版者	TECH SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/12260
专题	计算数学与科学工程计算研究所
通讯作者	Chen, Yun
作者单位	1.NW Polytech Univ, Sch Sci, Dept Appl Math, Xian 710129, Peoples R China 2.Chinese Acad Sci, LSEC, ICMSEC, Acad Math & Syst Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yun,Cui, Junzhi,Nie, Yufeng,et al. New Algorithm for the Thermo-Mechanical Coupled Frictional Contact Problem of Polycrystalline Aggregates Based on Plastic Slip Theory[J]. CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES,2011,76(3-4):189-206.
APA	Chen, Yun,Cui, Junzhi,Nie, Yufeng,&Li, Yiqiang.(2011).New Algorithm for the Thermo-Mechanical Coupled Frictional Contact Problem of Polycrystalline Aggregates Based on Plastic Slip Theory.CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES,76(3-4),189-206.
MLA	Chen, Yun,et al."New Algorithm for the Thermo-Mechanical Coupled Frictional Contact Problem of Polycrystalline Aggregates Based on Plastic Slip Theory".CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES 76.3-4(2011):189-206.