NORMAL CONTACT STIFFNESS OF THE ELLIPTIC AREA BETWEEN TWO ASPERITIES  

作　　者：Zhiqiang Liu Junping Shi Fusheng Wang Zhufeng Yue 

机构地区：[1]School of Mechanics, Civil Engineering, and Architecture, Northwestern Polytechnical University [2]Department of Engineering Mechanics, School of Science, Xi'an University of Technology

出　　处：《Acta Mechanica Solida Sinica》2015年第1期33-39,共7页固体力学学报（英文版）

基　　金：Project supported by the National Basic Research Program of China(973 Program)(No.2009CB724406)

摘　　要：A new expression for contact deformation is given, and the normal contact stiff- ness between single asperities is derived according to Hooke＇s law. A contact model between two ellipsoidal asperities is simulated by the FE method, the result compared with the theoretical solution. It is found that the curves of the normal contact stiffness versus the included angle in the principal curvature direction show similar trends and evolve as a cosine feature. The effects of the parameters on normal contact stiffness are found to show that normal contact stiffness increases and reaches the upper limit gradually with an increase in these parameters.A new expression for contact deformation is given, and the normal contact stiff- ness between single asperities is derived according to Hooke＇s law. A contact model between two ellipsoidal asperities is simulated by the FE method, the result compared with the theoretical solution. It is found that the curves of the normal contact stiffness versus the included angle in the principal curvature direction show similar trends and evolve as a cosine feature. The effects of the parameters on normal contact stiffness are found to show that normal contact stiffness increases and reaches the upper limit gradually with an increase in these parameters.

关 键 词：contact stiffness joint surface elliptical area ASPERITY 

分 类 号：TH16[机械工程—机械制造及自动化]