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

• Published in: Shanghai jiao tong da xue xue bao Vol. 22; no. 1; pp. 24 - 34
• Main Author: 符升平 罗宁 李胜波
• Format: Journal Article
• Language: English
• Published: Shanghai Shanghai Jiaotong University Press 01.02.2017; Springer Nature B.V
• Subjects: Architecture; Boundary conditions; Computer Science; Computer simulation; Design optimization; Dynamic characteristics; Dynamic response; Electrical Engineering; Engineering; Excitation; Finite element method; Galerkin method; Gearboxes; Life Sciences; Materials Science; Mathematical analysis; Mathematical models; Vehicles; Vibration; Vibration analysis; Vibration response; A; multi-boundary conditions; TH 132; TP 391.9; vehicle gearbox; multi-source excitations; dynamic characteristics of gear housing; fluid-solid coupling
• ISSN: 1007-1172; 1995-8188
• DOI: 10.1007/s12204-017-1795-7

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.