Founded in 1971 >
Chinese Sci-tech Core Periodicals >
British Science Abstracts (SA, INSPEC) Indexed Journals >
United States, Cambridge Scientific Abstract: Technology (CSA: T) Indexed Journals >
United States, Ulrich's Periodicals Directory(UPD)Indexed Journals >
United States, Cambridge Scientific Abstract: Natural Science (CSA: NS) Indexed Journals >
Poland ,Index of Copernicus(IC) Indexed Journals >
International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: Fretting wear is one of the main forms of failure of mechanically connected structures. Most of the current studies are based on constant normal contact loading conditions. However, in actual engineering, there are widely existing multiaxial loading conditions with variable normal load and axial load, which leads to the fact that the results of the current research on fretting wear under constant normal load cannot explain the fretting wear behavior under multiaxial alternating loading conditions. Therefore, taking the fretting wear of titanium alloy as an example, simulation analysis and experimental test study of fretting wear under variable biaxial loading was carried out. Firstly, a fretting wear model subjected to cyclic alternating biaxial loading was established. Then, the fretting wear behaviors were simulated under different normal load amplitudes, displacement load amplitudes, and phase differences of biaxial loading. Based on the Q-P curve analysis method,the fretting wear mechanisms under these complex micromotion cases were discussed. Finally, the biaxial fretting wear test was carried out on a biaxial fretting wear tester, which verified the rationality of the wear morphology of the finite element model. The research results show that the wear scar of the variable normal load is different from that of the constant normal load, the mean value of the normal load under the variable load remains the same as the value of the constant normal load, the wear depth and width under the variable normal load are larger than those under the constant normal load. For a certain displacement amplitude and phase difference, the wear width and depth increase with the increase of normal load amplitude, and the wear scar changes from "W" to "W+V". For a certain normal load amplitude and phase difference, the wear width and depth increase with the increase of displacement amplitude. For a certain normal load amplitude and displacement amplitude, when the biaxial loading phase difference changes, the maximum wear depth of 0° phase difference occurs in the contact trailing edge, the maximum wear depth of 180° phase difference occurs in the contact leading edge, and the wear depth of the leading and trailing edges of the 90° and 270° phase difference are close to each other in the extreme value.
Key words: fatigue failure of mechanical structure; fretting wear morphology; biaxial loading; cylinder/plane contact model; variable normal load; energy model; Q-P curve analysis method
-
- Chinese Core Periodicals
-
- Chinese Sci-tech Core Periodicals
-
- SA, INSPEC Indexed
-
- CSA: T Indexed
-
- UPD:Indexed
-
2010 Zhejiang Information Institute of Mechinery Industry
Technical Support：Hangzhou Bory science and technology
