Gear Noise Analysis
Summary
Gear noise, so called gear whine, is a continuous and relatively pure tone noise which primarily consists of 1st and 2nd order frequency of gear meshing force. In the case of passenger vehicle, the gear noise is a pain for passengers even though it is low noise level since the noise is generated in rather high frequency range where the background noise is low.
The phenomenon is quite complicated and it is practical to simulate the problem applying step by step approach stated below.
The salient features of the gear noise simulation providing by ESTECH are as follows.
1) Create high accuracy computer simulation model correlating to data from artificial excitation as well as operational tests, which enables to do design studies.
2) Study design of transmission case geometry such as gear box and rib thickness and rib location of to optimize vibration response applying optimization function of MSC Nastran, which is applicable to simulate radiation noise reduction as well.
3) Create high accuracy shafting CAE model including contact surfaces of bearing support and between hub and sleeve, which are predicted by nonlinear simulation.
4) Transfer the gear noise simulation technology to client's engineers through tailor made training project.
