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| 考虑剪滞效应的薄壁曲梁有限单元法 | |
| 引用本文： | 吴亚平,赖远明,朱元林,刘世忠,张学富.考虑剪滞效应的薄壁曲梁有限单元法[J].工程力学,2002,19(4):85-89. |
| 作者姓名： | 吴亚平 赖远明 朱元林 刘世忠 张学富 |
| 作者单位： | 1. 兰州铁道学院,兰州,730070;中科院寒区旱区环境与工程研究所冻土工程国家重点实验室,兰州,730000 2. 中科院寒区旱区环境与工程研究所冻土工程国家重点实验室,兰州,730000 3. 兰州铁道学院,兰州,730070 |
| 基金项目： | 甘肃省自然科学基金资助项目(ZS991-A22-021-G)，铁道部专项基金资助项目(J99Z097)，中科院百人计划基金资助项目(赖远明) |
| 摘 要： | 本文以最小势能原理为基础,考虑剪力滞后效应和翘曲扭转(包括二次翘曲剪切)的影响提出了一种用于分析单室或多室曲线薄壁箱型梁桥力学特性的曲梁单元,推导了单元刚度矩阵、等效节点荷载列阵。作为验证,在算例中对一双室曲线薄壁箱型梁模型的静力特性进行了分析,并将本文数值结果与试验结果和板壳有限元方法所得结果进行比较后证明了本文方法是有效的。 |
| 关 键 词： | 曲线梁桥 梁单元 剪力滞后 翘曲扭转 |
| 文章编号： | 1000-4750(2002)04-085-05 |
FINITE ELEMENT METHOD CONSIDERING SHEAR LAG EFFECT FOR CURVED BOX BEAMS |
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| WU Ya-ping,LAI Yuan-ming,ZHU Yuan-lin,LIU Shi-zhong,Zhang Xuefu.FINITE ELEMENT METHOD CONSIDERING SHEAR LAG EFFECT FOR CURVED BOX BEAMS[J].Engineering Mechanics,2002,19(4):85-89. | |
| Authors: | WU Ya-ping LAI Yuan-ming ZHU Yuan-lin LIU Shi-zhong Zhang Xuefu |
| Affiliation: | WU Ya-ping1,2,LAI Yuan-ming2,ZHU Yuan-lin2,LIU Shi-zhong1,Zhang Xuefu2 |
| Abstract: | Based on the principle of minimum potential energy, this paper presents a curved thin-walled box finite beam element method for curved thin-walled boxes. The shear lag and warping torsion effects are considered and a modified formula for bi-moment is proposed. To validate the present approach, an example of two-cell curved box beam is given. The numerical results of this paper agree well with the predictions of finite shell element method and experimental results. |
| Keywords: | curved box beam bridge beam element shear lag warping torsion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |