| 局部损伤梁动力问题的近似计算方法 |
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| 引用本文： | 潘旦光,董聪.局部损伤梁动力问题的近似计算方法[J].应用力学学报,2005,22(1):119-122. |
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| 作者姓名： | 潘旦光 董聪 |
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| 作者单位： | 清华大学,北京,100084 |
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| 基金项目： | 国家自然科学基金(59975049，50278047)，863计划(2002AA615110)资助项目 |
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| 摘 要： | 应用模态摄动法求解局部损伤梁动力特性。这一方法是在无损伤梁的模态子空间内实施,将含局部损伤梁的微分方程的求解转化为代数方程求解。通过算例,表明这一方法可有效的简化计算,同时计算结果具有较高的精度。
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| 关 键 词： | 模态摄动法 动力特性 损伤梁 |
| 文章编号： | 1000-4939(2005)01-0119-04 |
Approach to Solve Dynamic Problems of Cracked Beams |
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| Pan Danguang,DONG Cong.Approach to Solve Dynamic Problems of Cracked Beams[J].Chinese Journal of Applied Mechanics,2005,22(1):119-122. |
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| Authors: | Pan Danguang DONG Cong |
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| Abstract: | A method of modal perturbation is developed for solving the modal characteristics of cracked beams, where the analytical mode functions of the initial uncracked beams are utilized to transform the differential vibration equation of cracked beams into a set of algebraic equations. The numerical results verify the flexibility of this method with higher accuracy. |
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| Keywords: | mode perturbation dynamic characteristics cracked beams |
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