 | | 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: | | 13088 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8125
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| In English (Mech. Solids): | | 4963 |
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| Yan Li, Xiaohe Wan, Kai Meng, Duoran Wang, and Shuai Jiang, "Study on the Influence of Lubrication Effect on Nonlinear Dynamics of Rigid-Flexible Coupling Mechanisms with Clearance," Mech. Solids. 60 (1), 484-523 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
1 |
Pages |
484-523 |
| DOI |
10.1134/S0025654424605019 |
| Title |
Study on the Influence of Lubrication Effect on Nonlinear Dynamics of Rigid-Flexible Coupling Mechanisms with Clearance |
| Author(s) |
Yan Li (Swinburne College, Shandong University of Science and Technology, Jinan, Shandong Province, 250031 China)
Xiaohe Wan (Swinburne College, Shandong University of Science and Technology, Jinan, Shandong Province, 250031 China)
Kai Meng (Intelligent Equipment College, Shandong University of Science and Technology, Taian, Shandong Province, 271000 China)
Duoran Wang (Swinburne College, Shandong University of Science and Technology, Jinan, Shandong Province, 250031 China)
Shuai Jiang (Swinburne College, Shandong University of Science and Technology, Jinan, Shandong Province, 250031 China; Intelligent Equipment College, Shandong University of Science and Technology, Taian, Shandong Province, 271000 China, jiang_jackson@163.com) |
| Abstract |
As the skeleton of a mechanical system, the mechanism has a significant impact on its
mechanical performance. Multi-link mechanisms have been extensive used in multi-link presses
because of the advantages such as high stiffness, strong stability, and sensitive dynamic response. However, due to manufacturing errors and assembly requirements, there must be lubrication clearances in
the motion pairs of the mechanism, and considering deformation factors of flexible rods, dynamic
characteristics of mechanism differ from the ideal situation. Therefore, studying dynamic characteristics of multi-link mechanisms considering lubrication clearances and flexible rods is of great significance. This paper takes a six-link mechanism as research object and systematically studies its lubrication clearance dynamics. Based on absolute node coordinate method, a element model is built, and
the expressions of the beam element’s mass matrix, generalized force, and elastic force are derived.
Based on dry friction contact clearance kinematic model, expression of lubrication film bearing
capacity is derived through the Reynolds equation, and a lubrication clearance model is established.
By utilizing the constraint characteristics of the motion pairs and the Lagrange multiplier method, a
rigid-flexible coupling dynamic model of the six-link mechanism considering lubrication clearances
is established. Dynamic equations of the mechanism are numerically solved using the ode15s function
in MATLAB. Effects of lubrication/dry friction clearances on dynamic response and non-linear thermal properties of the mechanism are compared, dynamic comparative analysis of rigid mechanism
with lubrication clearance and rigid-flexible coupling mechanism with lubrication clearance are studied, and influence of clearance values, dynamic viscosity and translational clearance on dynamics
responses and non-linear characteristics are studied. |
| Keywords |
lubrication clearances, absolute node method, dynamic response, non-linear characteristics |
| Received |
11 August 2024 | Revised |
06 February 2025 | Accepted |
08 February 2025 |
| Link to Fulltext |
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