Effective dynamic properties of random nanoporous materials with consideration of surface effects

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	Effective dynamic properties of random nanoporous materials with consideration of surface effects
	Qiang FW; Wei PJ(魏培君)
刊名	ACTA MECHANICA
	2015-04
通讯作者邮箱	weipj@ustb.edu.cn
卷号	226 期号:4 页码:1201-1212
ISSN号	0001-5970
通讯作者	Wei, PJ (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China.
产权排序	[Qiang, Fangwei; Wei, Peijun] Univ Sci & Technol Beijing, Dept Appl Mech, Beijing 100083, Peoples R China; [Wei, Peijun] Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China
中文摘要	The frequency-dependent dynamic effective properties (velocity, attenuation and elastic modulus) of nanoporous materials with randomly positioned spherical cavities are studied. The surface energy theory proposed by Huang and Wang (Handbook of micromechanics and nanomechanics. Pan Stanford Publishing Pte Ltd., Singapore, pp 303-348, 2013) is used to derive the non-traditional boundary condition on the surface of the nanocavity and further the scattering matrix of a single nanocavity. Then, the total wave field is obtained by considering the multiple scattering processes among the dispersive spherical cavities. The configuration average of the total wave field results in the coherent waves or the averaged waves. The numerical examples of the effective speed, the effective attenuation of the coherent waves and associated effective dynamic modulus of a nanoporous material are given and shown graphically. The effects of surface elasticity and the residual surface tension are both considered. Moreover, the influences of the non-symmetric parts of in-plane surface stress and the out-of-plane parts of the surface stress are also discussed based on the numerical examples.
学科主题	Mechanics
分类号	二类
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
关键词[WOS]	MATRIX COMPOSITE-MATERIALS ; ELASTIC-WAVE-PROPAGATION ; MULTIPLE-SCATTERING ; INTERFACE STRESS ; PARTICLES ; CONSTANTS ; SOLIDS ; MEDIA ; MODEL
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1007/s00707-014-1220-3
语种	英语
WOS记录号	WOS:000351382500014
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/49903]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Qiang FW,Wei PJ. Effective dynamic properties of random nanoporous materials with consideration of surface effects[J]. ACTA MECHANICA,2015,226(4):1201-1212.
APA	Qiang FW,&魏培君.(2015).Effective dynamic properties of random nanoporous materials with consideration of surface effects.ACTA MECHANICA,226(4),1201-1212.
MLA	Qiang FW,et al."Effective dynamic properties of random nanoporous materials with consideration of surface effects".ACTA MECHANICA 226.4(2015):1201-1212.