| 索单元的动力等效线性化分析 |
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| 引用本文： | 茆会勇,孙国钧.索单元的动力等效线性化分析[J].合肥工业大学学报(自然科学版),2005,28(1):75-78. |
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| 作者姓名： | 茆会勇 孙国钧 |
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| 作者单位： | 上海交通大学,工程力学系,上海,200030;上海交通大学,工程力学系,上海,200030 |
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| 摘 要： | 首次建立了索单元动力问题分析的等效弹性模量修正公式,对以受拉二力杆单元取代索单元的准线性结构进行位移分析,并与原索膜结构时程分析法的数值结果进行了比较。结果表明,采用以模量修正的受拉二力杆单元取代索单元的准线性结构精度良好,为类似动力问题分析的等效线性化法提供了参考。
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| 关 键 词： | 非线性结构 等效线性化 能量相等原理 弹性模量修正 |
| 文章编号： | 1003-5060(2005)01-0075-04 |
| 修稿时间： | 2004年5月9日 |
Equivalent linearization analysis of dynamic problems with cables |
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| MAO Hui-yong,SUN Guo-jun.Equivalent linearization analysis of dynamic problems with cables[J].Journal of Hefei University of Technology(Natural Science),2005,28(1):75-78. |
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| Authors: | MAO Hui-yong SUN Guo-jun |
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| Abstract: | A formula for revising the elastic modulus that is applied to dynamic problems is established.The displacement of the quasi-linear structure is analyzed,and calculational values of the quasi-linear structure with tension-only spars are compared with those of the nonlinear structure with cables. The results show that the quasi-linear structure in which cable elements are replaced by tension-only spar elements has a high precision by means of revising the elastic modulus in the process of vibration. The presented formula lays the theoretic foundation of similar nonlinear dynamic analysis. |
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| Keywords: | nonlinear structure equivalent linearization theory of energy equivalent revising of elastic modulus |
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