Modeling and dynamic response of parallel shaft gear transmission in non-inertial system
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Gear transmissions play a critical role as a bridge between power elements and actuators. They are either fixed to the ground or operated in spatial motion, depending on the carrier to which they are attached. However, there are significant differences between the two. When the gear transmission is subjected to any transient motion with the carrier, its force mechanism and dynamic response should be studied in a non-inertial system. Assuming that the foundation is fixed, as in traditional studies, will result in a number of significant deviations in response results because of ignoring potential excitations. Therefore, a gear transmission dynamic model in non-inertial systems is established. Under non-inertial conditions, the effect of gravity on the carrier changes from constant to time-varying. Additional inertial forces and additional gyroscopic moments are derived. Typical translational and rotational motions of the carrier are the basic forms for synthesizing arbitrary spatial motions and are therefore selected as case studies. The force mechanism under different non-inertial conditions is shown. The results indicate that the non-inertial effect has a significant influence on the shafting deformation, trajectories, bearing force, and system stability. Transient motion of the carrier is also critical for gearing excitation. The influence ratio of each additional term is quantified. The study provides analytical models and data references for strength determination and optimization design of related structures, and lays a foundation for further studies on more detailed nonlinear behaviors under more diverse non-inertial conditions.
KeywordsSpatial motion Non-inertial system Gear transmission Nonlinear dynamic behavior Force mechanism
This study was supported by the National Natural Science Foundation of China (51775058) and the Fundamental Research Funds for Central Universities (2018CDXYJX0019/2018CDJDCD0001). The authors gratefully acknowledge the constructive and insightful comments and suggestions of the editor and reviewers for revising the study.
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Conflict of interest
The authors declare that there is no conflict of interest regarding the publication of this paper.
- 8.Yuan, B., Chang, S., Liu, G., Chang, L., Liu, L.: Quasi-static analysis based on generalized loaded static transmission error and dynamic investigation of wide-faced cylindrical geared rotor systems. Mech. Mach. Theory 134, 74–94 (2019). https://doi.org/10.1016/j.mechmachtheory.2018.12.019 CrossRefGoogle Scholar
- 19.Shi, J., Gou, X., Zhu, L.: Modeling and analysis of a spur gear pair considering multi-state mesh with time-varying parameters and backlash. Mech. Mach. Theory 134, 582–603 (2019). https://doi.org/10.1016/j.mechmachtheory.2019.01.018 CrossRefGoogle Scholar
- 32.Nishihara, O., Matsuhisa, H., Sato, S.: Vibration damping mechanisms with gyroscopic moment. JSME Int. J. Ser. 3, Vib. Control Eng. Eng. Ind. 35(1), 50–55 (1992)Google Scholar