NVH deals with just what the name implies. Noise, Vibration and Harshness. One area is elimination of road noise and reduction of ambient noise into the interior of the car. This also includes noises introduced by the vehicle itself. Annoyances like dashboard squeek and rattle is a biggie. Transmission/powertrain noise/shifting also plays a big part.chandran said:But what do automotive people do in NVH. Please give examples
Noise Vibration Harshness (NVH) in FEA is a type of analysis used in engineering and design to predict and understand the level of noise, vibration, and harshness that a product or structure will produce under certain conditions. It is commonly used in the automotive, aerospace, and industrial industries to improve the quality and performance of products.
NVH is important in FEA because it helps engineers and designers identify potential issues with noise, vibration, and harshness in a product or structure before it is manufactured. This allows for adjustments and improvements to be made in the design phase, saving time and resources in the long run.
The key components of NVH analysis in FEA include modeling the structure or product, simulating the environment and operating conditions, and analyzing the results to determine the level of noise, vibration, and harshness. This often involves using specialized software and techniques to accurately predict and measure these factors.
NVH analysis is different from other types of FEA because it focuses specifically on the effects of noise, vibration, and harshness on a product or structure. Other types of FEA may focus on different factors such as stress and strain, thermal effects, or fluid dynamics.
Some limitations of NVH analysis in FEA include the complexity of accurately modeling and simulating real-world conditions, the potential for errors or inaccuracies in the analysis, and the need for specialized software and expertise. Additionally, NVH analysis may not account for all possible sources of noise, vibration, and harshness, and may require additional testing and adjustments in the physical prototype stage.