合肥工业大学学报(自然科学版)
閤肥工業大學學報(自然科學版)
합비공업대학학보(자연과학판)
JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE)
2014年
1期
10-13
,共4页
声固耦合%噪声%灵敏度%优化计算
聲固耦閤%譟聲%靈敏度%優化計算
성고우합%조성%령민도%우화계산
acoustic-structure coupling%noise%sensitivity%optimization calculation
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。
文章建立某型客車的聲固耦閤有限元模型,利用MSC .Nastran對車內最後排乘客測點耳徬聲壓進行瞭預測,併通過實驗驗證瞭分析結果。為瞭降低譟聲峰值,通過靈敏度分析選擇閤適的桿件進行優化計算,最終有效降低瞭關鍵頻率下測點聲壓的響應峰值,為降低由于結構振動而引起的車內低頻譟聲提供瞭指導。
문장건립모형객차적성고우합유한원모형,이용MSC .Nastran대차내최후배승객측점이방성압진행료예측,병통과실험험증료분석결과。위료강저조성봉치,통과령민도분석선택합괄적간건진행우화계산,최종유효강저료관건빈솔하측점성압적향응봉치,위강저유우결구진동이인기적차내저빈조성제공료지도。
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 .