Journal Article

Low noise optimization of two-stage gearbox housing structure based on acoustic contribution analysis and topology optimization

Zhou, Jianxing, Qi, Le, Jin, Pengcheng, Liu, Guochun, Su, Yongzheng, Wang, Mingming, Zhou, Hengyu, Song, Lirui

2023

Overview

In this paper, a rib layout optimization method that can efficiently reduce the radiated noise of gearboxes is proposed. Taking the secondary gearbox as the research object, the radiated noise of the housing is calculated using the FEM/BEM method, the process of determining the region with the maximum acoustic contribution is illustrated, and a topology optimization model that can reduce the air noise on the field points of the gearbox is established with the surface normal velocity of the region as the optimization target. The method is applied to add new noise reduction ribs on the surface of the gearbox. The results show that after combining the topology optimization with the acoustic contribution analysis, the sound pressure in the area with the highest sound pressure on the gearbox sound field is significantly reduced by adding new noise reduction ribs according to the optimization results.

• Publisher: Korean Society of Mechanical Engineers,Springer Nature B.V,대한기계학회
• Subject: Acoustics / Control / Design techniques / Dynamical Systems / Efficiency / Engineering / Gearboxes / Industrial and Production Engineering / Load / Low noise / Mechanical Engineering / Noise reduction / Optimization / Optimization models / Original Article / Radiation / Sound fields / Sound pressure / Topology optimization / Vibration / 기계공학