Elastic response of rough surfaces in partial contact

被引:20
作者
Batrouni, GG
Hansen, A
Schmittbuhl, J
机构
[1] Univ Nice Sophia Antipolis, CNRS, Inst Nonlineaire Nice, UMR 6618, F-06560 Valbonne, France
[2] NTNU, Dept Phys, N-7491 Trondheim, Norway
[3] NORDITA, DK-2100 Copenhagen O, Denmark
[4] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark
[5] Ecole Normale Super, CNRS, Geol Lab, UMR 8538, F-75231 Paris 05, France
来源
EUROPHYSICS LETTERS | 2002年 / 60卷 / 05期
关键词
D O I
10.1209/epl/i2002-00368-1
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We model numerically the partial normal contact of two elastic rough surfaces with highly correlated asperities. Facing surfaces are unmated and described as self-a ne with a Hurst exponent H. The numerical algorithm is based on Fourier acceleration and allows for numerous and large system computations. We find that for H = 0.6 and H = 0.8, the force F scales as A(1.1), where A is the contact area. This is in contrast to the law F similar to A((1+H)/2), predicting an exponent of 0.8 and 0.9, respectively, which was suggested by Roux et al. (Europhys. Lett., 23 (1993) 277). We propose an explanation for this discrepancy.
引用
收藏
页码:724 / 730
页数:7
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