- 會議論文
箱型冷氣之動態剛性與噪音分析
Noise Analysis and The Dynamic Stiffness Analysis of Air Conditioner Structures.
摘要
本研究主要目的乃以探討平板與箱型冷氣機台之結構振動頻率與模態振型以及噪音分析，結合ANSYS有限元素分析法及頻譜量測實驗分析法進行平板與箱型冷氣機台模型之頻率及振型驗證，使用模態實驗分析方法，運用激振器(shaker)固定在一激振點上，將平板與箱型冷氣機主結構適當位置點上安裝加速規與Photon-Π頻譜分析儀連結收取各點頻率之數值，並且輸出頻率響應函數實驗資料至ME’scopeVES 從事模態分析工作，擷取出前六個自然模態數值與模態振型。量測箱型冷氣機運轉作業時產生之噪音，將所得到的聲音線性頻譜進行分析，同時亦轉換為1/3 八音頻帶模擬人耳聽覺之感受，再以模態分析軟體ME’scopeVES 從事後處理分析，了解對環境的影響程度，將有助於製造參數設計之選擇。說明了有限元素分析法與實驗分析法能作為機械系統之電腦輔助工程分析之運用。
並列摘要
In this research paper, main purpose is discussion theplate and the box air-conditioner's structure vibrationfrequency and mode shape and noise analysis,combination of ANSYS finite element analysis andspectrum measurement analysis to carried out experimentsthe model of the plank and box air-conditioner's frequencyand vibration-based authentication, use of modal analysisexperimental method, Using the shaker do vibration intoair-conditioner's one point also fixed, Will be flat's plankwith the box-type air-conditioner main structure point toinstall the appropriate place of the accelerometer andPhoton-II spectrum analyzer link to receive all the pointsfrequency values, And the output frequency responsefunctions experimental data into the ME'scopeVES to domodal analysis's work, Capture experiment values ofnatural frequencies and mode shapes. Gauges the airconditioner revolves when has the noise, Obtains thesound linear frequency spectrum carries on the analysis,The transformation is 1/3 Octave bands simulates feelingof the person ear sense of hearing, Is engaged in thepost-processing analysis again by modal analysis softwareME'scopeVES, Is helpful choice in the manufacture parameterdesign. Explained the Finite Element Analysis method andthe experiment analytic method can take utilization ofComputer-aided engineering of the mechanical system.