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CSME 2023/05
Volume 44 No.2
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185-191
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Finite Element Analysis on the Elastic Contact between a Donut-Shaped Asperity and a Half-Space
Jiunn-Jong Wua and Chia-Hung Wub
aDepartment of Mechanical Engineering, Chang Gung University, TaoYuan, Taiwan 33302, ROC.
bInstitute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 10617, ROC.
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Abstract:
The contact for donut-shaped asperity has been investigated for decades based on two-dimensional Hertz contact. In this paper, the contact is investigated by finite element analysis. The results show that two-dimensional Hertz contact can predict the contact only for the donut-asperity with large radius. Thus, new semi-empirical equations are proposed. The total load, load-indentation depth relations and the coordinates of contact edges can be predicted accurately by semi-empirical equations. For the donut-asperity with small radius, the modified model can predict the contact.
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Keywords: contact mechanics, donut-shaped asperity
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*Corresponding author; e-mail:
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©
2023
CSME , ISSN 0257-9731
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