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Effective dynamic properties of random nanoporous materials with consideration of surface effects
Qiang FW; Wei PJ(魏培君); Wei, PJ (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China.
Source PublicationACTA MECHANICA
2015-04
Volume226Issue:4Pages:1201-1212
ISSN0001-5970
AbstractThe 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.
Subject AreaMechanics
DOI10.1007/s00707-014-1220-3
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000351382500014
WOS KeywordMATRIX COMPOSITE-MATERIALS ; ELASTIC-WAVE-PROPAGATION ; MULTIPLE-SCATTERING ; INTERFACE STRESS ; PARTICLES ; CONSTANTS ; SOLIDS ; MEDIA ; MODEL
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China [10972029] ; Opening fund of State Key Laboratory of Nonlinear Mechanics (LNM)
DepartmentLNM固体物理力学
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49903
Collection非线性力学国家重点实验室
Corresponding AuthorWei, PJ (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Qiang FW,Wei PJ,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,&Wei, PJ .(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.
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