Noise vibration harshness(NVH)-fea

  • Thread starter chandran
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What do these terms mean. I am doing static analysis using fea on some parts.

But what do automotive people do in NVH. Please give examples
 

Astronuc

Staff Emeritus
Science Advisor
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If one searches google with "noise vibration harshness", one will find many references, e.g.

http://www.ni.com/automotive/nvh.htm [Broken]

and perhaps more germane to the question,

http://www.vipac.com.au/Automotive/nvhdesign/ [Broken]
 
Last edited by a moderator:

FredGarvin

Science Advisor
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chandran said:
But what do automotive people do in NVH. Please give examples
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.

One major test that I have been a part of was "four poster" testing. This puts each wheel on a hydraulic actuator and puts the vehicle thru different profiles of induced shocks. This looks into overall modal issues with frames and suspension systems as well as durability.

It is a pretty diverse area with a lot of responsibilities and a lot of vehicle testing is done, even after production begins.
 

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