噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
5期
210-213,218
,共5页
吕金水%陈剑%袁正
呂金水%陳劍%袁正
려금수%진검%원정
声学%排气消声器%DOE%传递损失%优化设计
聲學%排氣消聲器%DOE%傳遞損失%優化設計
성학%배기소성기%DOE%전체손실%우화설계
acoustics%exhaust muffler%DOE%transmission loss%optimization design
以某型挖掘机的排气消声器为例，通过现场测试及仿真分析，找出了消声量较小的频率段。运用DOE方法，对各消声单元主要尺寸进行参数化建模，安排优化拉丁方试验，分析各消声结构对其消声性能的贡献量。通过多目标优化计算得到最优化的消声器结构参数。优化后消声器的模拟计算结果表明，改进后的消声器在目标频率段的消声量明显提高。
以某型挖掘機的排氣消聲器為例，通過現場測試及倣真分析，找齣瞭消聲量較小的頻率段。運用DOE方法，對各消聲單元主要呎吋進行參數化建模，安排優化拉丁方試驗，分析各消聲結構對其消聲性能的貢獻量。通過多目標優化計算得到最優化的消聲器結構參數。優化後消聲器的模擬計算結果錶明，改進後的消聲器在目標頻率段的消聲量明顯提高。
이모형알굴궤적배기소성기위례，통과현장측시급방진분석，조출료소성량교소적빈솔단。운용DOE방법，대각소성단원주요척촌진행삼수화건모，안배우화랍정방시험，분석각소성결구대기소성성능적공헌량。통과다목표우화계산득도최우화적소성기결구삼수。우화후소성기적모의계산결과표명，개진후적소성기재목표빈솔단적소성량명현제고。
An exhaust muffler of a digging machine is studied to find the weak frequency band with test and CAE method. With the internal structure characteristics of the muffler as design factors, the main sizes of anechoic components are parameterized based on DOE. The Latin square optimization experiment is done to analyze the noise elimination contribution of each muffler component. And the optimized muffler structural parameters are obtained through multi-objective optimization. Simulation result of the optimized muffler indicates that the noise attenuation performance in the target frequency band is significantly improved.
