Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions

doi:10.1007/s12204-017-1795-7

上海交通大学学报（英文版） ›› 2017, Vol. 22 ›› Issue (1): 24-034.doi: 10.1007/s12204-017-1795-7

Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions

FU Shengping (符升平), LUO Ning* (罗宁), LI Shengbo (李胜波)

(School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, Fujian, China)

出版日期:2017-02-28 发布日期:2017-04-04
通讯作者: LUO Ning(罗宁) E-mail:54246665@qq.com

Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions

FU Shengping (符升平), LUO Ning* (罗宁), LI Shengbo (李胜波)

(School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, Fujian, China)

Online:2017-02-28 Published:2017-04-04
Contact: LUO Ning(罗宁) E-mail:54246665@qq.com

摘要/Abstract

摘要： With the development of vehicle gearbox to high-power-density and high-speed, how to predict and optimize the dynamic characteristics of vehicle gearbox becomes increasingly prominent. Aiming at the vehicle gearbox, this paper comprehensively and deeply studies the dynamic characteristics under the multi-boundary conditions. The generation mechanism of the multi-source excitations triggering the gearbox vibration is analyzed firstly. The vibration transfer path of the gearbox is explored. Secondly, the engine excitation, the gear meshing excitation and the bearing support load are numerically calculated. According to the finite element method, a fluid-solid coupling finite element model of the gearbox body is established to predict the gearbox dynamic responses based on the Galerkin method and the Hamiltonian variational principle. Finally, the effects of the excitation condition, oil height and reinforcement forms on the vibration responses of the gearbox body are thoroughly studied by simulation. The analysis indicates that it not only helps to modify and improve the method of forecasting the gearbox dynamic response, and also provides the theoretical and technical guidance for the gearbox design and optimization.

关键词: vehicle gearbox, dynamic characteristics of gear housing, multi-boundary conditions, fluid-solid coupling, multi-source excitations

Abstract: With the development of vehicle gearbox to high-power-density and high-speed, how to predict and optimize the dynamic characteristics of vehicle gearbox becomes increasingly prominent. Aiming at the vehicle gearbox, this paper comprehensively and deeply studies the dynamic characteristics under the multi-boundary conditions. The generation mechanism of the multi-source excitations triggering the gearbox vibration is analyzed firstly. The vibration transfer path of the gearbox is explored. Secondly, the engine excitation, the gear meshing excitation and the bearing support load are numerically calculated. According to the finite element method, a fluid-solid coupling finite element model of the gearbox body is established to predict the gearbox dynamic responses based on the Galerkin method and the Hamiltonian variational principle. Finally, the effects of the excitation condition, oil height and reinforcement forms on the vibration responses of the gearbox body are thoroughly studied by simulation. The analysis indicates that it not only helps to modify and improve the method of forecasting the gearbox dynamic response, and also provides the theoretical and technical guidance for the gearbox design and optimization.

Key words: vehicle gearbox, dynamic characteristics of gear housing, multi-boundary conditions, fluid-solid coupling, multi-source excitations

中图分类号:

FU Shengping (符升平), LUO Ning* (罗宁), LI Shengbo (李胜波). Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions[J]. 上海交通大学学报（英文版）, 2017, 22(1): 24-034.

FU Shengping (符升平), LUO Ning* (罗宁), LI Shengbo (李胜波). Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions[J]. Journal of shanghai Jiaotong University (Science), 2017, 22(1): 24-034.

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Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions

Study on Dynamic Characteristics of Vehicle Gearbox Under Multi-Boundary Conditions

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