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摘要


本文利用動態參數建立分析結構組件挫屈載重之理論模式。其分析原理係利用動態量測所測得之資料,經模態分析得構件之振動參數(振態及頻率),推導出柔度矩陣,並配合能量等值關念,經力法分析導出特徵方程式,以求取結構組件之挫屈載重。本分析模式之特點爲不必考慮邊界條件之限制,不需施加軸向載重,只需測點上之振動參數即可求得結構組件挫屈載重。本文就常見理想邊界之圓版結構組件,進行理論模式之驗證,並對實驗時外在因素所造成之量測誤差進行模擬,且探討其對挫屈載重之影響。

關鍵字

挫屈載重 振動參數

並列摘要


A dynamic method is described for determining the linear buckling loads of elastic, perfectly flate, circular plates. The proposed method does not require the application of in-plane loads, it requires only vibrational excitation of the plate. The buckling load is determined from the modal parrmeters. The simulation experimentations show that this approach is suitable for load of a circular plate subjected to inplane force.

並列關鍵字

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