| 网壳结构在地震作用下的动力稳定研究 |
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| 引用本文： | 陈应波,陈军明,吴代华.网壳结构在地震作用下的动力稳定研究[J].华中科技大学学报(自然科学版),2004,32(10):40-42. |
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| 作者姓名： | 陈应波 陈军明 吴代华 |
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| 作者单位： | 武汉理工大学,设计研究院,湖北,武汉,4300070;武汉理工大学,设计研究院,湖北,武汉,4300070;武汉理工大学,设计研究院,湖北,武汉,4300070 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 2 0 80 16 ) |
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| 摘 要： | 以非线性有限元为工具，建立了网壳结构的非线性动力响应分析的有效方法．将网壳结构动力稳定判定准则引入到结构强度计算中，从而使结构的强度问题和稳定问题统一在一起．重点研究了单层球面网壳的非线性动力响应行为，对网壳结构在地震作用下的动力失稳状态以及倒塌现象作了理论上的研究，为“结构倒塌”作出了合理的定义，并进而探讨了网壳结构失稳机理。
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| 关 键 词： | 网壳结构 非线性 稳定准则 地震作用 失稳机理 |
| 文章编号： | 1671-4512(2004)10-0040-03 |
| 修稿时间： | 2004年3月17日 |
Dynamic stability of reticulated shell under earthquake excitation |
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| Chen Yingbo Chen Junming Wu DaihuaAssos. Prof., Design and Research Institute,Wuhan University of Technology,Wuhan ,China..Dynamic stability of reticulated shell under earthquake excitation[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2004,32(10):40-42. |
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| Authors: | Chen Yingbo Chen Junming Wu DaihuaAssos Prof Design and Research Institute Wuhan University of Technology Wuhan China |
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| Institution: | Chen Yingbo Chen Junming Wu DaihuaAssos. Prof., Design and Research Institute,Wuhan University of Technology,Wuhan 430070,China. |
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| Abstract: | A nonlinear dynamic finite element technique was developed to analyze the nonlinear dynamic response of reticulated shells under strong earthquake excitation. The mathematical formulas of stability criteria were established and could be drawn into computational program of structure strength. The strength of the structure and its stability problems were integrated. The nonlinear dynamic behaviors of a single layer reticulated spherical shell were investigated. The dynamic unstable features of the structure were theoretically explained, the definition of structure collapse given, and the unsteady mechanisms of the structure presented. |
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| Keywords: | reticulated shell nonlinear stability criteria earthquake excitation unsteady mechanism |
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