한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2007년도 추계학술대회논문집
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- Pages.612-616
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- 2007
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- 1598-2548(pISSN)
Drive Point Dynamic Stiffness(DPDS)분석을 통한 Road noise 개선
Road noise improvement using Drive Point Dynamic Stiffness(DPDS) estimation
- Lee, Sang-Yun (GM Daewoo Auto & Technology Co.) ;
- Kim, Young-Ho (GM Daewoo Auto & Technology Co.) ;
- Lee, Keun-Soo (GM Daewoo Auto & Technology Co.)
- 발행 : 2007.11.15
초록
This paper describes a procedure to improve road noise using DPDS estimation. We can estimate a body local stiffness at chassis mounting point where the path of road input vibration by DPDS with experiment and FE simulation. DPDS result from FE model has a good correlation with experiment data. FE model DPDS shows weak points among chassis mounting points. Body panel thickness and shape were changed to meet DPDS target. Improved DPDS of critical points makes a road noise level lower.