On stickiness of multiscale randomly rough surfaces

On stickiness of multiscale randomly rough surfaces
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多尺度随机粗糙表面的粘性

DOI:
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发表时间:
2018
期刊:
The journal of adhesion
影响因子:
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通讯作者:
M. Ciavarella
M. Ciavarella
中科院分区:
--
文献类型:
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作者:
G. Violano;L. Afferrante;A. Papangelo;M. Ciavarella

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摘要利用Persson理论推导了具有随机分形粗糙度的dmt型粘着固体的粘着判据。正如预期的那样,我们发现粘性,即在没有载荷的情况下维持宏观拉伸压力或其他非零接触面积的可能性,不受短波长的PSD粗糙度谱截断的影响,并且可以持续到比引力范围大几个数量级的粗糙度幅度。由于后者具有典型的纳米值,该准则为众所周知的经验Dalhquist粘性准则提供了理由,该准则要求胶粘剂的弹性模量低于约1mpa。
ABSTRACT A new stickiness criterion for solids having random fractal roughness is derived using Persson’s theory with DMT-type adhesion. As expected, we find that stickiness, i.e. the possibility to sustain macroscopic tensile pressures or else non-zero contact area without load, is not affected by the truncation of the PSD spectrum of roughness at short wavelengths and can persist up to roughness amplitude orders of magnitude larger than the range of attractive forces. With typical nanometre values of the latter, the criterion gives justification to the well-known empirical Dalhquist criterion for stickiness that demands adhesives to have elastic modulus lower than about 1 MPa.
DOI: 10.1007/s11249-017-0900-2
发表时间: 2017-12-01
期刊: TRIBOLOGY LETTERS
影响因子: 3.2
作者:
Mueser, Martin H.;Dapp, Wolf B.;Greenwood, James A.
通讯作者: Greenwood, James A.
DOI: 10.1073/pnas.1913126116
发表时间: 2019-12-17
影响因子: 11.1
作者:
Dalvi, Siddhesh;Gujrati, Abhijeet;Jacobs, Tevis D. B.
通讯作者: Jacobs, Tevis D. B.
DOI: 10.1038/s41598-017-07234-4
发表时间: 2017-07-31
期刊: Scientific reports
影响因子: 4.6
作者:
Papangelo A;Hoffmann N;Ciavarella M
通讯作者: Ciavarella M