Effect of Atomic-Scale Roughness on Contact Behavior

被引：0
|
作者：
Duan Fang-Li [1 ]
Qiu He-Bing [1 ]
Yang Ji-Ming [1 ]
Wu Cong-Ying [1 ]
机构：
[1] Chongqing Univ, State Key Lab Mech Transmiss, Chongqing 400030, Peoples R China
来源：
ADVANCES IN POWER TRANSMISSION SCIENCE AND TECHNOLOGY | 2011年 / 86卷
关键词：
Molecular Dynamics Simulation; Atomic-Scale Roughness; Nano-Contact; RANDOMLY ROUGH; ADHESION; FRICTION; SURFACE;
D O I：
10.4028/www.scientific.net/AMM.86.584
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Large-scale molecular dynamics simulations are performed to study the effect of atomic-scale surface roughness on nano-contact. The modeling system consists of rigid spherical tips with different surface roughness and elastic flat substrate. Our results show that atomic-scale multi-asperity can change the contact behavior from consistent with the Hertz model to the Persson model. However, adhesion will reduce the influence of surface roughness, to the extent that the two tips with different roughness show similar variations of real contact area with applied load. The maximum compression and tensile stress of the rough tip is about 2 times and 1.5 times that of the smooth one, respectively. Moreover, the rough tip exhibits larger repulsive force and attractive force in the entire range of simulated load. Our simulations suggest that pull-off force cannot characterize the extent of the influence of adhesion on contact behavior at the nanoscale.
引用
收藏
页码：584 / 589
页数：6
相关论文
共 50 条
  • [31] Multiple Slips in Atomic-Scale Friction: An Indicator for the Lateral Contact Damping
    Raphael Roth
    Thilo Glatzel
    Pascal Steiner
    Enrico Gnecco
    Alexis Baratoff
    Ernst Meyer
    Tribology Letters, 2010, 39 : 63 - 69
  • [32] Compressive behavior of crystalline nanoparticles with atomic-scale surface steps
    Wang, Gangfeng
    Bian, Jianjun
    Feng, Juan
    Feng, Xiqiao
    MATERIALS RESEARCH EXPRESS, 2015, 2 (01)
  • [33] Understanding Atomic-Scale Behavior of Liquid Crystals at Aqueous Interfaces
    Ramezani-Dakhel, Hadi
    Sadati, Monirosadat
    Rahimi, Mohammad
    Ramirez-Hernandez, Abelardo
    Roux, Benoit
    de Pablo, Juan J.
    JOURNAL OF CHEMICAL THEORY AND COMPUTATION, 2017, 13 (01) : 237 - 244
  • [34] Visualizing the atomic-scale origin of metallic behavior in Kondo insulators
    Pirie, Harris
    Mascot, Eric
    Matt, Christian E.
    Liu, Yu
    Chen, Pengcheng
    Hamidian, M. H.
    Saha, Shanta
    Wang, Xiangfeng
    Paglione, Johnpierre
    Luke, Graeme
    Goldhaber-Gordon, David
    Hirjibehedin, Cyrus F.
    Davis, J. C. Seamus
    Morr, Dirk K.
    Hoffman, Jennifer E.
    SCIENCE, 2023, 379 (6638) : 1214 - +
  • [35] The atomic-scale studies of the behavior of the crystal dissolution in a molten metal
    Yu, CH
    Lin, KL
    CHEMICAL PHYSICS LETTERS, 2006, 418 (4-6) : 433 - 436
  • [36] Atomic-scale dynamic deformation behavior of BN thin films
    Iwamoto, C
    Yang, HS
    Yoshida, T
    SURFACE ENGINEERING 2002-SYNTHESIS, CHARACTERIZATION AND APPLICATIONS, 2003, 750 : 385 - 389
  • [37] Atomic-scale anisotropy of nanoscratch behavior of single crystal iron
    Lu, C.
    Gao, Y.
    Deng, G. Y.
    Michal, G.
    Huynh, N. N.
    Liu, X. H.
    Tieu, A. K.
    WEAR, 2009, 267 (11) : 1961 - 1966
  • [38] The Scale Effect of Roughness on Hydrodynamic Contact Friction
    Demirci, I.
    Mezghani, S.
    Yousfi, M.
    Zahouani, H.
    El Mansori, M.
    TRIBOLOGY TRANSACTIONS, 2012, 55 (05) : 705 - 712
  • [39] The Scale Effect of Roughness on Hydrodynamic Contact Friction
    Demirci, I.
    Mezghani, S.
    Yousfi, M.
    Zahouani, H.
    El Mansori, M.
    TRIBOLOGY & LUBRICATION TECHNOLOGY, 2017, 73 (06) : 62 - 76
  • [40] Tuning the magnetic coupling across ultrathin antiferromagnetic films by controlling atomic-scale roughness
    W. Kuch
    L. I. Chelaru
    F. Offi
    J. Wang
    M. Kotsugi
    J. Kirschner
    Nature Materials, 2006, 5 : 128 - 133
12345