摘要
文章建立某型客车的声固耦合有限元模型,利用MSC.Nastran对车内最后排乘客测点耳旁声压进行了预测,并通过实验验证了分析结果。为了降低噪声峰值,通过灵敏度分析选择合适的杆件进行优化计算,最终有效降低了关键频率下测点声压的响应峰值,为降低由于结构振动而引起的车内低频噪声提供了指导。
The finite element model of acoustic-structure coupling of a bus was built. The sound pres- sure of the last row passenger point was calculated by MSC. Nastran and verified through experiment. In order to reduce the peak noise, the appropriate rod was chosen through sensitivity analysis, and op- timization calculation conducted. The peak of sound pressure of measuring point under the relevant frequency was reduced efficiently. The study provides a reference for the reduction of low-frequency interior noise caused by structural vibration.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期10-13,共4页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(50975071)
关键词
声固耦合
噪声
灵敏度
优化计算
acoustic-structure coupling
noise
sensitivity
optimization calculation
