Reflection of micropolar elastic waves at the non-free surface of a micropolar elastic half-space

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Reflection of micropolar elastic waves at the non-free surface of a micropolar elastic half-space
	Zhang, Peng 1; Wei, Peijun 1,2; Tang, Qiheng2
刊名	ACTA MECHANICA
	2015-09-01
通讯作者邮箱	weipj@ustb.edu.cn
卷号	226 期号:9 页码:2925-2937
ISSN号	0001-5970
通讯作者	Wei, PJ (reprint author), Univ Sci & Technol Beijing, Dept Appl Mech, Beijing 100083, Peoples R China.
产权排序	[Zhang, Peng; Wei, Peijun] Univ Sci & Technol Beijing, Dept Appl Mech, Beijing 100083, Peoples R China; [Wei, Peijun; Tang, Qiheng] Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China
中文摘要	The reflection problem of the micropolar elastic waves at the non-free surface of a micropolar elastic half-space is studied in this paper. Different from the classic elastic solid, there are four kinds of elastic waves in the micropolar elastic solid and three of them are dispersive. The boundary conditions at the non-free surface of a micropolar elastic half-space are used to obtain the linear algebraic equation sets from which the amplitude ratios of reflection waves to the incident wave can be determined. Then, the reflection coefficients in terms of energy flux ratios are calculated numerically, and the normal energy flux conservation is used to validate the numerical results. At last, the influence of the boundary parameters, which reflect the mechanical behavior of the non-free surface, on the reflection energy partition of micropolar elastic waves is discussed based on the numerical results. Two cases of incident longitudinal displacement wave and incident coupled transverse displacement and transverse microrotational wave are considered.
英文摘要	The reflection problem of the micropolar elastic waves at the non-free surface of a micropolar elastic half-space is studied in this paper. Different from the classic elastic solid, there are four kinds of elastic waves in the micropolar elastic solid and three of them are dispersive. The boundary conditions at the non-free surface of a micropolar elastic half-space are used to obtain the linear algebraic equation sets from which the amplitude ratios of reflection waves to the incident wave can be determined. Then, the reflection coefficients in terms of energy flux ratios are calculated numerically, and the normal energy flux conservation is used to validate the numerical results. At last, the influence of the boundary parameters, which reflect the mechanical behavior of the non-free surface, on the reflection energy partition of micropolar elastic waves is discussed based on the numerical results. Two cases of incident longitudinal displacement wave and incident coupled transverse displacement and transverse microrotational wave are considered.
学科主题	Mechanics
分类号	二类
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
关键词[WOS]	WELDED CONTACT ; PLANE-WAVES ; PROPAGATION ; INTERFACE ; REFRACTION ; SOLIDS ; MEDIA
收录类别	SCI
原文出处	http://dx.doi.org/10.1007/s00707-015-1346-y
语种	英语
WOS记录号	WOS:000357728700007
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/55331]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Sci & Technol Beijing, Dept Appl Mech, Beijing 100083, Peoples R China 2.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Peng,Wei, Peijun,Tang, Qiheng. Reflection of micropolar elastic waves at the non-free surface of a micropolar elastic half-space[J]. ACTA MECHANICA,2015,226(9):2925-2937.
APA	Zhang, Peng,Wei, Peijun,&Tang, Qiheng.(2015).Reflection of micropolar elastic waves at the non-free surface of a micropolar elastic half-space.ACTA MECHANICA,226(9),2925-2937.
MLA	Zhang, Peng,et al."Reflection of micropolar elastic waves at the non-free surface of a micropolar elastic half-space".ACTA MECHANICA 226.9(2015):2925-2937.