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| 钢框架高等分析中考虑局部屈曲的子结构法 | |
| 引用本文： | 王孟鸿,王连坤,郝际平,张俊峰. 钢框架高等分析中考虑局部屈曲的子结构法[J]. 计算力学学报, 2009, 26(4): 494-499 |
| 作者姓名： | 王孟鸿 王连坤 郝际平 张俊峰 |
| 作者单位： | 1. 北京建筑工程学院,土木与交通工程学院,北京,100044 2. 五邑大学土木建筑系,江门,529020 3. 西安建筑科技大学土木工程学院,西安,710055 |
| 基金项目： | 国家自然科学基金(50378078)资助项目 |
| 摘 要： | 将相对自由度概念引入三维实体等参数单元,得到了16结点相对自由度壳元的插值表达式,并基于更新拉格朗日构型的虚位移原理推导了该壳单元的刚度矩阵。在单元刚度矩阵形成以后采用子结构法对内部结点自由度进行聚缩,根据薄壁构件相关假定并考虑截面翘曲因素的影响,通过边界结点的位移协调条件把壳单元组装成每端7个自由度的薄壁梁-柱单元参与整体分析,可以考虑板件局部屈曲的影响;突破了传统分析的紧凑型截面限制,并通过算例证明了本文方法的精确度和有效性。 |
| 关 键 词： | 高等分析 相对自由度壳元 子结构 局部屈曲 薄壁梁-柱单元 |
| 收稿时间： | 2007-04-27 |
Substructure method considering local buckling in steel frame advanced analysis |
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| WANG Meng-hong,WANG Lian-kun,HAO Ji-ping and ZHANG Jun-feng. Substructure method considering local buckling in steel frame advanced analysis[J]. Chinese Journal of Computational Mechanics, 2009, 26(4): 494-499 | |
| Authors: | WANG Meng-hong WANG Lian-kun HAO Ji-ping ZHANG Jun-feng |
| Affiliation: | 1.School of Civil and Transportation Engineering;Beijing University of Civil Engineering and Architecture;Beijing 100044;China;2.Department of Civil Engineering and Architecture;Wuyi University;Jiangmen 529020;3.School of Civil Engineering;Xi'an University of Architecture and Technology;Xi'an 710055;China |
| Abstract: | The concept of relative degrees-of-freedom is introduced into the isoparametric element,and the interpolation expressions of 16 nodes shell element with relative degrees-of-freedom are obtained.The element stiffness matrix is derived according to the increment virtual displacement principle based on the updated Lagrange configuration.After the formation of substructure's stiffness matrix the degrees-of-freedom of internal nodes are condensed.According to the Vlasov's premises,the thin-walled beam-column ele... |
| Keywords: | advanced analysis shell element with relative degrees-of-freedom substructure local buckling thin-walled beam-column element |
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