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IJSS 2014 Ming Liu

已有 2283 次阅读 2015-2-13 06:25 |个人分类:Paper|系统分类:论文交流

1.     Ming Liu, Finite element analysis of largecontact deformation of an elastic-plastic sinusoidal asperity and a rigid flat,International Journal of Solids and Structures 51(2014) 3642-3652.

http://www.sciencedirect.com/science/article/pii/S0020768314002583 

Abstract

Normal contact deformation of an asperity and a rigid flat is studied within an axisymmetric finite element model. The asperity features a sinusoidal profile and is elastic–plastic with linear strain hardening. Influences of geometrical (asperity height and width) and loading (the maximum interference) parameters on frictionless contact responses are explored for both loading and unloading. Dimensionless expressions for contact size and pressures covering a large range of interference and asperity ratio values are obtained in power-law forms. Results show the mean contact pressure after fully-plastic contact reaches a plateau only for small asperity ratios, while it continues increasing for large asperity ratios. The residual depth is found to be associated with plastically dissipated energy.




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