NVH专题之-路噪问题解决办法
作者:管理员    发布于:2014-04-24 19:46:57    文字:【】【】【
摘要:NVH专题之-路噪问题解决办法
NVH专题之-路噪问题解决办法

Step 1: Force calculations

 Operational data = Reference Virtual Spectra (PC1)

• for all paths and over determination points

1. Mount stiffness

 Possible if sufficient insulation:

2. Matrix inversion

 With use of a-priori known loads

 Transfer functions = structural FRF matrix

 Step 2: Contribution analysis

 Operational data = Matrix inversion forces (PC1)

 Transfer functions

• Vibro-acoustic FRF matrix towards microphones

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