IMECH-IR  > 力学所知识产出(1956-2008)
梯度涂层材料中裂纹问题的非均匀元分析
Alternative TitleAn analysis of a crack in functionally gradient coatings by inhomogeneous finite element
赵希淑; 张双寅; 吴永礼
Source Publication工程力学
2002-08-30
Volume19Issue:4Pages:118-122
ISSN1000-4750
Abstract本文采用非均匀等参有限元的方法研究了薄膜梯度涂层/均匀基材中的界面裂纹问题,并与双材料界面裂纹情况进行了对比计算。研究表明:在均匀基材上采用梯度涂层,与双材料相比可以有效地降低裂尖场应力强度因子;同时还分析了涂层厚度与梯度参数对界面应力强度因子的影响。结果表明:当薄膜厚度大于或等于裂纹长度时,应力强度因子(K_I、K_(II))对其尺度的变化显得不敏感;对梯度参数的影响而言,当材料性能曲线的幂指数m大于1时,裂尖场的应力强度因子K_(II)相对K_I很小且基本不随m变化,因此裂尖场与均匀材料情况类似;当m小于1时,应用强度因子K_(II)随m减小而急剧增大,裂尖场由K_I及K_(II)控制,断裂趋于混合型。
Keyword非均匀等参元 功能梯度材料 界面裂纹 应力强度因子
Indexed ByCSCD
Language中文
CSCD IDCSCD:994822
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/41138
Collection力学所知识产出(1956-2008)
Corresponding Author赵希淑
Recommended Citation
GB/T 7714
赵希淑,张双寅,吴永礼. 梯度涂层材料中裂纹问题的非均匀元分析[J]. 工程力学,2002,19,4,:118-122.
APA 赵希淑,张双寅,&吴永礼.(2002).梯度涂层材料中裂纹问题的非均匀元分析.工程力学,19(4),118-122.
MLA 赵希淑,et al."梯度涂层材料中裂纹问题的非均匀元分析".工程力学 19.4(2002):118-122.
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