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題 名 | 簡支板之實驗模態分析=Experimental Modal Analysis of a Simply Supported Plate |
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作 者 | 王栢村; 陳榮亮; | 書刊名 | 國立屏東科技大學學報 |
卷 期 | 6:4 1997.12[民86.12] |
頁 次 | 頁273-281 |
分類號 | 440.2 |
關鍵詞 | 簡支板; 實驗模態分析; 頻率響應函數; 模態參數; 關聯性函數; Simply supported plate; Experimental modal analysis; EMA; Frequency response function; FRE; Modal parameters; Coherence function; |
語 文 | 中文(Chinese) |
中文摘要 | 本文主要是對簡支板從事實驗模態分析,首先根據理論之簡支板邊界條件及運動 方程式,推導出理論之頻率響應函數與模態參數。其次探討簡支板簡支部份之實驗模擬方式 ,並實際做出簡支板之模型,再進行實驗模態分析得出結構之頻率響應函數、關聯性函數, 再將頻率響應函數做曲線嵌合,得出實驗之模態參數。最後將實驗之結果與理論之結果做比 較,以及將實驗與理論之振型以模態保證指標與模態比例因子判別正確性,經由理論與實驗 之結果相驗證,簡支板結構之模擬結果能與理論相吻合。所以本文之簡支板結構可以做為實 驗模態分析之示範教具,亦可從事相關之振動與操音控制之後續研究。 |
英文摘要 | This paper presents the experimental modal analysis (EMA) of a simply supported plate. The equation of motion of the simply supported plate and it's boundary conditions are first discussed. The frequency response functions (FRFs) and modal parameters are then theoretically derived. The experimental simulation of simply supported plate is illustrated and built. Experimental modal analysis is then performed to obtain a series of frequency response functions and the corresponding coherence functions. By the operation of curve-fitting on the FRFs, the modal parameters can be determined. Results show that both the experimental and theoretical results agree well. The built simply supported plate is, there for, validated and can be used as the demonstration tools of EMA as well as for the further study on the structural vibration and controls. |
本系統中英文摘要資訊取自各篇刊載內容。