MATEC Web Conf.
Volume 306, 2020The 6th International Conference on Mechatronics and Mechanical Engineering (ICMME 2019)
|Number of page(s)||5|
|Section||Power Engineering and Applied Mechanics|
|Published online||14 January 2020|
A new impact dynamics model of a clearance joint considering the adhesive effects in space environment
1 Shaanxi Engineering Laboratory for Transmissions and Controls, Northwestern Polytechnical University, 710072, Xi’an P. R. China
2 Shanghai Aircraft Design and Research Institute, 200436 Shanghai, P. R. China
* Corresponding author: author:email@example.com
In space environment, there is severe adhesive effect, and the impact contact process shows different phenomenon due to the adhesive forces. In this paper, a new impact dynamics model of a clearance joint is developed considering the adhesive effects. The Hertz contact model, L-J potential and Dugdale model are combined, and an adhesive force term is included in the original hybrid contact force model. Taking a clearance joint as an example, the theory of adhesive forces during the impact contact process is given, and the influence of the adhesive forces is investigated. Negative forces are discovered at the beginning of the contact, and the contact forces of the modified model are higher than the hybrid model. Besides, the indentation depth is also higher than the hybrid model. The energy conservation principle is employed to explain the phenomena, and the contact forces will be underestimated if the adhesive effects are ignored. This work could be contributed to estimating the contact forces and friction forces more reasonablely in the space environment.
© The Authors, published by EDP Sciences 2020
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