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  • 學位論文

振動篩選機之電腦輔助設計與分析

Computer-Aided Design and Analysis of an Oscillating Sieve

指導教授 : 葉仲基

摘要


本論文主要是利用電腦輔助設計分析之整合性軟體I-DEAS作為主要工作平台,以分析生物產業用之振動篩選機,模擬其受到振動馬達產生振動時之狀態。 分析方法是將振動篩選機利用I-DEAS繪製出實體圖,再運用I-DEAS之有限元素分析模組分析其固有頻率與模態振形。再進一步的討論動態模擬分析,分析的項目則有振動馬達作用力、橡膠彈簧之彈簧常數、振動馬達安裝角度及振動馬達安裝於重心與其他位置之比較等,將所模擬出之狀態作為日後業者設計該種振動篩選機時之重要參考依據。 經由I-DEAS軟體計算出結果後,可以得到所需之模態參數與動態模擬之結果,其結果顯示,當馬達作用力與馬達安裝角度調整至最大值時,可得最大之位移與速度值,但是橡膠彈簧之彈簧常數的增加會使振動篩選機產生之位移與速度遞減,且振動馬達安裝於重心時並不能得到最佳振動效果。

並列摘要


The main purpose of this thesis is to study the vibration properties of an oscillating sieve, using the CAE software package I-DEAS, for computer-aided design and analysis. We used the I-DEAS simulation module to simulate the oscillating sieve, which is excited by two vibration motors. In the study, analysis methods are divided into two parts-modal analysis and dynamic simulation analysis. The modal analysis used the finite element method by means of the I-DEAS simulation module. The reason for this is to obtain natural frequencies and mode shapes from the system. The dynamic simulation analysis includes four parameters: the force of vibration motors, the spring constant of rubber springs, the installed angle of vibration motors, and the installed position of vibration motors. The results of the I-DEAS simulation analyses have found out the first eight natural frequencies and mode shapes. When the forces, together with the installed angles of vibration motors were increased, displacement and speed were increased. However, displacement and speed were decreased when the spring constants were increased. When the vibration motors were installed at their gravity center, oscillating performance was not optimal.

參考文獻


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被引用紀錄


張哲維(2007)。重量選別機量測系統動態分析〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2007.00809
鄒韋(2006)。田埂用紅火蟻餌劑撒佈機之研製及性能分析〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2006.01362

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