Abstract
The dynamic meshing characteristics of gear drives have been a major concern in the design of power transmission systems as they affect vibration, acoustic noise, durability and efficiency. Gaining a more comprehensive understanding of the dynamic meshing characteristics of continuous engaged gear drives is a key to the development of power transmission systems. In this paper, a dynamic contact finite element analysis method, considering the variation of the engaged teeth pairs, the loaded elastic and contact deformations, and the sliding friction, is presented for the dynamic meshing characteristics analysis of continuous and elastic engaged gear drives. Various kinds of continuous engaged gear models under low and high speed condition are simulated and compared using the presented method. The tooth profile modification was designed based on the simulation results. Moreover, the effects of the tooth profile modification, the sliding friction and the time-varying meshing stiffness upon the dynamic meshing characteristics of continuous engaged gear drives are discussed in detail. The results show that the method is not only effective in designing and evaluating the tooth profile modification, but also in studying the dynamic meshing characteristics of continuous engaged gear drives with realistic time-varying meshing stiffness and tooth sliding friction. The present method could provide an effective tool for vibration mechanism study and dynamic design of the continuous engaged gear drives considering more influence factors.
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Yongjun Wu is a Ph.D student at the school of Jet Propulsion at Beijing University of Aeronautics and Astronautics. His research interests are in vibration and vibration control for mechanical transmission systems, structural strength and vibration for mechanical structures.
Jianjun Wang is a professor in the School of Jet Propulsion at Beijing University of Aeronautics and Astronautics. He received an MS in mechanical engineering at Chongqing University in 1983, and a Ph.D in solid mechanics at Tsinghua University in 1998. His research interests are in vibration for mechanical transmission systems, FE simulation for various solid and fluid problems, structural strength and vibration for turbine engines, and active vibration control of engineering structures.
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Wu, Yj., Wang, Jj. & Han, Qk. Contact finite element method for dynamic meshing characteristics analysis of continuous engaged gear drives. J Mech Sci Technol 26, 1671–1685 (2012). https://doi.org/10.1007/s12206-012-0416-5
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DOI: https://doi.org/10.1007/s12206-012-0416-5