 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12804 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
|
| In English (Mech. Solids): | | 4760 |
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| << Previous article | Volume 59, Issue 2 / 2024 | Next article >> |
| Xianjun Zeng and Ning Hu, "Modal Coupling Vibration Analysis of Bolted Casing System Based on Surface Contact Mechanics," Mech. Solids. 59 (2), 909-926 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
2 |
Pages |
909-926 |
| DOI |
10.1134/S0025654424600077 |
| Title |
Modal Coupling Vibration Analysis of Bolted Casing System Based on Surface Contact Mechanics |
| Author(s) |
Xianjun Zeng (College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China, Zxianjun1988@163.com)
Ning Hu (College of Aerospace Engineering, Chongqing University, Chongqing, 400044 China; Skate Key Laboratory of Reliability and Intelligence Electrical Equipment, and School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300401 China) |
| Abstract |
The casing system is the skeleton of the aero-engine, and its vibration directly reflects the
vibration level of the whole aero-engine. Different from the previous modeling of the casing system as
a cylindrical shell, this paper creatively establishes the lumped mass modal coupling vibration model
of the bolted connection casing system from the perspective of micro contact mechanics. The bolted
connection characteristics and Hertz contact characteristics of micro topography of discontinuous
casing are considered, which rarely appear in previous studies on casing system modeling. The paper
first completes the interface contact mechanics modeling of bolted connection, and then the establish
interface contact mechanics model is effectively verified (by comparing with classical model and finite
element model). Based on the established contact mechanics model of the connection interface, a
modal coupling model of the casing system is established. The effects of interface stiffness ratio, interface fractal parameters, the number of connection bolts and friction coefficient on the stability of the
system are analyzed. This study establishes a bridge between micro contact and macro system vibration
analysis, which can be used to establish the dynamic model of similar bolted connection system in
engineering. |
| Keywords |
contact mechanics, asperity, fractal theory, bolted connection, casing system |
| Received |
10 January 2024 | Revised |
08 March 2024 | Accepted |
03 April 2024 |
| Link to Fulltext |
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