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The Scientific World Journal
Volume 2014, Article ID 919518, 9 pages
Research Article

Interference Assembly and Fretting Wear Analysis of Hollow Shaft

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China

Received 13 January 2014; Revised 8 April 2014; Accepted 22 April 2014; Published 12 May 2014

Academic Editor: Pradeep Lancy Menezes

Copyright © 2014 Chuanjun Han and Jie Zhang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Fretting damage phenomenon often appears in the interference fit assembly. The finite element model of hollow shaft and shaft sleeve was established, and the equivalent stress and contact stress were computed after interference assembly. The assembly body of hollow shaft and shaft sleeve was in whirling bending load, and the contact status (sticking, sliding, and opening) and the distribution of stress along one typical contact line were computed under different loads, interferences, hollow degrees, friction coefficient, and wear quantity. Judgment formula of contact state was fixed by introducing the corrected coefficient . The computation results showed that the “edge effect” appears in the contact surface after interference fit. The size of slip zone is unchanged along with the increase of bending load. The greater the interference value, the bigger the wear range. The hollow degree does not influence the size of stick zone but controls the position of the junction point of slip-open. Tangential contact stress increases with the friction coefficient, which has a little effect on normal contact stress. The relationship between open size and wear capacity is approximately linear.