Multiple-scale interface fracture analysis for thin film/substrate system under temperature mismatch

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	Multiple-scale interface fracture analysis for thin film/substrate system under temperature mismatch
	Li MZ(李美之); Ma HS(马寒松); Liang LH(梁立红); Wei YG(魏悦广); Li MZ(李美之)
	2013
会议名称	IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures
会议日期	AUG 08-12, 2010
通讯作者邮箱	limz@Lnm.imech.ac.cn;mahs@Lnm.imech.ac.cn;lianglh@Lnm.imech.ac.cn;ywei@Lnm.imech.ac.cn
会议地点	Beijing, China
关键词	Multiple-scale fracture Thin film Temperature mismatch Fracture energy Discrete dislocation
卷号	31
页码	137-146
通讯作者	李美之
中文摘要	Based on the Wei-Xu model (Int J Plast, 21:2123, 2005), a multiple-scale interface fracture analysis for the thin film/substrate system under temperature mismatch is carried out. The thin film delamination process at the macroscopic scale is analyzed by using the strain gradient plasticity theory. The plastic shielding effects on the interface crack propagation are investigated for both the elastic film/plastic substrate and the plastic film/elastic substrate systems. On the other hand, by presenting a bridging model (equivalent interface K’-field) and by using the Rice-Thomson discrete dislocation model, the microscopic fracture process of the thin film/substrate system is analyzed, and the dislocation shielding effects on interface cracking at the microscale are investigated. The results show that the variation of interface fracture energy has an inverse size effect with respect to the dislocation-free zone size.
产权排序	[Li Meizhi;Ma Hansong;Liang Lihong;Wei Yueguang] LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
会议网址	http://link.springer.com/chapter/10.1007/978-94-007-4911-5_12
会议录	IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures - Proceedings of the IUTAM Symposium held in Beijing, China, 8-12 August, 2010
会议录出版者	Springer Netherlands
语种	英语
ISSN号	1875-3507
ISBN号	978-94-007-4910-8
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/48308]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Li MZ(李美之)
推荐引用方式 GB/T 7714	Li MZ,Ma HS,Liang LH,et al. Multiple-scale interface fracture analysis for thin film/substrate system under temperature mismatch[C]. 见:IUTAM Symposium on Surface Effects in the Mechanics of Nanomaterials and Heterostructures. Beijing, China. AUG 08-12, 2010.http://link.springer.com/chapter/10.1007/978-94-007-4911-5_12.