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題名 | 以模態測試法修正分析模型邊界條件之研究=The Study of Modifying the Boundary Conditions of Structural Modeling Using Modal Testing Method |
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作者 | 鄧作樑; 林傳傑; | 書刊名 | 中正嶺學報 |
卷期 | 28:1 1999.09[民88.09] |
頁次 | 頁39-49 |
分類號 | 440.2 |
關鍵詞 | 邊界條件; 模態測試法; Boundary conditions; Modal testing method; |
語文 | 中文(Chinese) |
中文摘要 | 嵌板結構為戰鬥載具上之基本結構,嵌板結構及固著其上的儀器在爆震環境將承 受爆震而損壞,故嵌板結構的抗爆震動態反應分析為載具設計上不可或缺的一環。 一般結構的動態反應分析模型所考慮的邊界條件係假設其為理想化的邊界,並不能夠真正模 擬實體的邊界條件,致使分析結果與實際結構行為有所差異。 由於板殼結構在不同的邊界條件下會有不同的自然振頻特性,因此本文將結合模態測試實驗 結果來修正分析模型的邊界條件,可減少分析結果與結構實際反應之差異,以提昇分析結果 的正確性。 |
英文摘要 | Panel is one of the fundamental elements in military structures. The damage inflicted by explosions can consist of direct shock-wave damage occurring to those panel structures and mechanicl shock damage occurring to attached equipment. Fundamental and detailed investigations of shock loading and its associated strctural response is required for designing effective panel structures to withstand explosions. The previous works were carried out on the analysis of plates having classical boundary conditions. However, boundary conditions in many structures are far from classical in nature. The boundary conditions used in the analysis may influence the analysis results. In this work, we employ the modal testing method to determine the realization of boundary conditions in the vibration analysis of plates. This is because the natural frequencies are different for plates having different boundary conditions. This procedure offers accurate and reliable analysis results for effective panel structure. |
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