變截面Timoshenko梁的有限元解法
The Finite Element Method for a Variable Cross-Section Timoshenko Beam
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摘要: 把J.Thomas等提出的常截面Timoshenko梁的單元矩陣擴展應用于變截面的Timoshenko梁。從計算結果和按簡單梁處理的比較中可以看出:梁的粗端的剪切變形和轉動慣性對系統的固有頻率有較大影響。Abstract: Expanded the elemental matrix of a uniform Timoshenko beam by J. Thomas into the matrix of a variable cross-section Timoshenko beam. By comparing with the simple beam, the present results show that:the influence of the wider end of beam on natural frequency arc larger.
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