| 一种计算非比例阻尼结构地震响应的新方法 |
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| 引用本文： | 国巍,余志武.一种计算非比例阻尼结构地震响应的新方法[J].力学学报,2011,43(6):1170-1180. |
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| 作者姓名： | 国巍 余志武 |
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| 作者单位： | 南大学土木工程学院, 高速铁路建造技术国家工程实验室 |
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| 基金项目： | 国家自然科学基金(50938008,51108466); 中国博士后资助基金(20110491277); 中南大学博士后资助基金; 中南大学自由探索基金; 中南大学引进人才科研基金资助项目~~ |
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| 摘 要： | 在非比例阻尼结构地震响应分析中, 直接积分法和强迫解耦法均具有鲜明的优缺点, 考虑到计算精度和计算效率的均衡, 提出了一种可用于非比例阻尼结构地震响应计算的新方法---多自由度模态方程方法. 同时, 通过推导指出了直接积分法和强迫解耦法是所提出方法的两种特殊形式, 从而构建了非比例阻尼结构地震响应计算方法的完整理论体系. 最后采用数值算例验证了多自由度模态方程方法在非比例阻尼结构地震响应计算中的有效性, 并说明其可以通过合理划分结构分区来调节计算精度和计算效率.
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| 关 键 词： | 多自由度模态方程 |
| 收稿时间： | 2010-11-17 |
| 修稿时间： | 2011-03-12 |
A NEW METHOD FOR CALCULATING SEISMIC RESPONSE OF NON-PROPORTIONALLY DAMPED STRUCTURES |
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| Guo Wei Yu Zhiwu.A NEW METHOD FOR CALCULATING SEISMIC RESPONSE OF NON-PROPORTIONALLY DAMPED STRUCTURES[J].chinese journal of theoretical and applied mechanics,2011,43(6):1170-1180. |
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| Authors: | Guo Wei Yu Zhiwu |
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| Institution: | National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, China |
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| Abstract: | For seismic response analysis of structures with non-proportional damping characteristic,the derived and presented traditional calculation methods based on proportional damping will no longer be accurate in theory,and in some cases even produce incorrect results.In view of such problems,engineering and academia often adopt the direct integration method for exact solution,which would need relatively large computation cost,and the forced decoupling method with high efficiency for approximate solution which wo... |
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| Keywords: | non-proportional damping seismic response direct integration method forced-decoupling method multiple-degree-of-freedom modal equation |
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