• Saravanan K
• Bhagate Rajkumar
• G Mathan

Quieter transmissions and improved NVH levels in passenger vehicles have become an important goal in automotive industry. Gear whine noise is one of the major contributors to overall vehicle NVH. Reducing gear whine noise to an acceptable level is a big challenge mainly due to weight reduction strategies to achieve better fuel economy, especially for multistage manual transmission gear box. CAE based noise prediction, mathematical analysis and mitigation strategies often deliver first time quality design product with low NVH target. This paper will discuss simulation techniques to investigate 3rd gear whine noise at full load condition with different micro geometry. The simulation work has been carried out using multi body simulation tool AVL Excite®. To do sensitivity analysis of third gear and common pair gear micro geometry and optimize the structural borne noise. The gear box geometric parameters and gear micro machining parameters are studied in detail. The surface velocity of structural housing contact pattern and transmission error are analyzed with different lead slopes of common gear pair.

Gear whine, Finite element model, Excite Power Unit, Surface velocity and Gear housing

"Sensitivity analysis of gear whine noise in multistage gear box through multi body modeling ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 10, page no.b536-b541, October-2022, Available :http://www.jetir.org/papers/JETIR2210177.pdf

"Sensitivity analysis of gear whine noise in multistage gear box through multi body modeling ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 10, page no. ppb536-b541, October-2022, Available at : http://www.jetir.org/papers/JETIR2210177.pdf