TY - JOUR
T1 - Effect of asperity interactions on rough surface elastic contact behavior
T2 - Hard film on soft substrate
AU - Yeo, Chang Dong
AU - Katta, Raja R.
AU - Lee, Jungkyu
AU - Polycarpou, Andreas A.
N1 - Funding Information:
The initial motivation of this work was through a sponsored research program from Seagate Technology LLC through Grant no. SRA-64828. Support by Grants from the National Science Foundation under Grant number CAREER CMS-0239232 and Information Storage Industry Consortium (INSIC) Extremely High Density Recording (EHDR) program are also acknowledged.
PY - 2010/8
Y1 - 2010/8
N2 - An improved elastic micro-contact model of rough surfaces accounting for asperity interactions is proposed. The contact behavior of a single asperity system is composed of a stiffer hemi-spherical asperity deformation and bellowing softer substrate deformation, which is then extended to rough surface contact including asperity interactions. Using the solution of substrate deformation, normal positions of individual asperities are adjusted during quasi-static contact, from which surface interactive forces are obtained. Analytical simulations are performed using the proposed rough surface contact model, whose results are compared to Greenwood-Williamson-based models and with experimental measurements.
AB - An improved elastic micro-contact model of rough surfaces accounting for asperity interactions is proposed. The contact behavior of a single asperity system is composed of a stiffer hemi-spherical asperity deformation and bellowing softer substrate deformation, which is then extended to rough surface contact including asperity interactions. Using the solution of substrate deformation, normal positions of individual asperities are adjusted during quasi-static contact, from which surface interactive forces are obtained. Analytical simulations are performed using the proposed rough surface contact model, whose results are compared to Greenwood-Williamson-based models and with experimental measurements.
KW - Asperity interactions
KW - Coating
KW - Contact mechanics
KW - Surface roughness
UR - http://www.scopus.com/inward/record.url?scp=77953284754&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2010.01.021
DO - 10.1016/j.triboint.2010.01.021
M3 - Article
AN - SCOPUS:77953284754
SN - 0301-679X
VL - 43
SP - 1438
EP - 1448
JO - Tribology International
JF - Tribology International
IS - 8
ER -