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題名 | 自動化多重參考點結構振態分析的發展與應用 |
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作者姓名(中文) | 潘明峰; 古瓊忠; 李百堂; | 書刊名 | 中正嶺學報 |
卷期 | 20:1 1991.07[民80.07] |
頁次 | 頁1-9 |
分類號 | 319.4 |
關鍵詞 | 多重參考點; 自動化; 振態分析; |
語文 | 中文(Chinese) |
中文摘要 | 本文主旨在於針對多重參考振態分析法的缺點提出改進之道,期使該 分析過程更加自動化,以減少原本過於依賴人為判斷的弊病。首先,將「奇異值 分解」應用在由頻率響應函數組成的「自共分散矩陣」上,則結構所含真實模態 的數目就可被自助識別。其次,再以「振態確實性準則」就分析所得諸模態加以 逐一比較,則可進一步將真實模態與計算模態自動區分出來,如此而使整個分析 過程更加自動化。最後則舉PAYLOAD結構為例,以驗證此自動化識別法的百靠 性。 |
英文摘要 | The purpose of this paper presents the improved method for eliminating the user's judgement in theprocess of multiple references modal analysis and achieving the automatic modal parameter estimation.When applied Singvlar Value Decomposition in the "Autocovariance" matrix which was composed ofthe Frequency Response Functions, the automatic determination of the number of physical modes overthe desired frequency range is accomplished. Meanwhile, distinguishing between the physical modesand the computational modes is achieved through the Modal Assurance Criterion. To evaluate the effectiveness of this method, a Payload structure is constructed. Verification results show that the currentmethod yields a very good improvement in modal analysis procedure. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。