Modeling of Normal Contact Stiffness of Interface Considering Side Contact of Asperity

被引：0
|
作者：
Wang S. [1 ]
Yang Z. [1 ]
Wu J. [2 ]
Li P. [1 ]
机构：
[1] School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an
[2] Technology Department of Xi'an Kunlun Industry (Group) Co. Ltd., Xi'an
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2022年 / 56卷 / 02期
关键词：
Horizontal distance of asperities; Lateral contact; Normal distribution; Normal stiffness;
D O I：
10.7652/xjtuxb202202013
中图分类号：
学科分类号：
摘要：
A modeling approach for the normal stiffness of the lateral contact interface considering the horizontal distance distribution between asperities is proposed. After the information of contact plane are acquired by sampling, the distribution of the horizontal distances among asperities on the contact plane are investigated statistically. It is found that the distribution of the horizontal distances among asperities is approximatly the normal distribution. Once a normal stiffness of asperities is determined based on side contact theory between asperities and continuous deformation theory of asperities, according to the distribution law of the horizontal distances between asperities, a new normal contact stiffness model of contact interface is constructed following probability and statistics theory. The simulation indicates that the normal contact load of the new model is greater than the load of KE model and less than GZQ model when the average distance between contact surfaces is given. Meanwhile, when the distance is small, the normal contact stiffness of the new model always less than that of KE model. When the distance is large, the contact stiffness of this new model is greater than that of KE model, and the normal contact stiffness of the new model is always is less than that of GZQ model. And the top three-order vibration type acquired based on the finite element simulation of the new model coincides well with the test outcome, and the maximum natural frequency error reaches 8.2%, which verifies that this newly proposed model can forecast the normal dynamic performance of the joint plane more exactly. © 2022, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：118 / 129
页数：11
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