Interior Noise Reduction Using Sensitivity Analysis and Structural Dynamic Modification

민감도 해석 및 구조 변경법을 이용한 차실 소음 저감

  • 황우석 (대구대학교 자동차·산업·기계공학부)
  • Published : 1999.12.01


Sensitivity analysis and structural modification technique are used to reduce the interior noise of a passenger car. The sensitivity analysis for the noise level at the rear seat shows that the stiffness change at the front lower member and the rear roof rail are sensitive. Using the structural modification method, we verified that the reinforcements at those members decrease the noise transfer function from the body to the rear seat. The combined application of the sensitivity analysis and structural modification method can decrease the noise level effectively.



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