An elastoplastic microasperity contact model for metallic materials

Li Po Lin, Jen-Fin Lin

研究成果: Article同行評審

60 引文 斯高帕斯(Scopus)

摘要

In the present study, the formulas for the asperity contact loads (F ec and F pc) corresponding to the critical interferences at the inception of elastoplastic and fully plastic deformations are employed to establish their relation with the ratio of these two critical interferences (δec and δ pc). The critical interference ratio (δ pcec) can thus be expressed as a function of the critical contact load ratio, (F pc/F ec), whose value was obtained from the experimental results of metallic materials. The interference (δpc) corresponding to the inception of fully plastic deformation can thus be determined. The dimensionless analyses of asperity contact area, average contact pressure, and contact load in the elastic and fully plastic regime reveals that these parameters in the elastoplastic regime can be expressed in power form and to be as a function of dimensionless interference (δ/δec). The coefficients and exponents of the power form expressions can be determined by the boundary conditions set at the two ends of this regime. Four models are proposed in this study to compare the contact behaviors in the elastoplastic regime. The applications in contact of rough surfaces are also presented and discussed.

原文English
頁(從 - 到)666-672
頁數7
期刊Journal of Tribology
127
發行號3
DOIs
出版狀態Published - 2005 7月 1

All Science Journal Classification (ASJC) codes

  • 材料力學
  • 機械工業
  • 表面和介面
  • 表面、塗料和薄膜

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