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Nanoadhesion of a Power-Law Graded Elastic Material
Chen SH(陈少华); Chen PJ(陈培见); Chen SH
Source PublicationChinese Physics Letters
AbstractThe Dugdale-Barenblatt model is used to analyze the adhesion of graded elastic materials at the nanoscale with Young's modulus E varying with depth z according to a power law E = E-0(z/c(0))(k) (0 < k < 1) while Poisson's ratio v remains a constant, where E-0 is a referenced Young's modulus, k is the gradient exponent and c(0) is a characteristic length describing the variation rate of Young's modulus. We show that, when the size of a rigid punch becomes smaller than a critical length, the adhesive interface between the punch and the graded material detaches due to rupture with uniform stresses, rather than by crack propagation with stress concentration. The critical length can be reduced to the one for isotropic elastic materials only if the gradient exponent k vanishes.
KeywordBiomimetic Fibrillar Interfaces Adhesion Contact Design Strip
Indexed BySCI
WOS IDWOS:000282870400056
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [10972220, 10732050, 10721202] ; Chinese Academy of Sciences [KJCX2-YW-M04]
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChen SH
Recommended Citation
GB/T 7714
Chen SH,Chen PJ,Chen SH. Nanoadhesion of a Power-Law Graded Elastic Material[J]. Chinese Physics Letters,2010,27(10):108102.
APA 陈少华,陈培见,&Chen SH.(2010).Nanoadhesion of a Power-Law Graded Elastic Material.Chinese Physics Letters,27(10),108102.
MLA 陈少华,et al."Nanoadhesion of a Power-Law Graded Elastic Material".Chinese Physics Letters 27.10(2010):108102.
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