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| 考虑剪滞剪切效应的复合材料薄壁箱型梁梁单元 | |
| 引用本文： | 张学富,赖远明,吴亚平,赵德安,喻文兵,张淑娟.考虑剪滞剪切效应的复合材料薄壁箱型梁梁单元[J].工程力学,2003,20(2):122-132. |
| 作者姓名： | 张学富 赖远明 吴亚平 赵德安 喻文兵 张淑娟 |
| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州,730000 2. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州,730000;东南大学岩土工程研究所,江苏南京,210096 3. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州,730000;兰州铁道学院土木工程学院,甘肃兰州,730030 4. 兰州铁道学院土木工程学院,甘肃兰州,730030 |
| 摘 要： | 运用层合板理论,用最小势能原理和能量变分法建立了复合材料箱型梁梁单元的控制微分方程,给出了初参数解,导出了考虑剪切和剪力滞效应的单元刚度矩阵和等效节点荷载矩阵,还推导出了每层的应力,并编制出了有限元分析程序。运用该程序对复合材料箱型简支梁和连续梁进行了算例分析,从算例分析的结果与理论分析、实验结果和ANSYS软件的计算结果的比较,可以看出该梁单元有限元方法是正确可靠的。 |
| 关 键 词： | 梁单元 剪力滞 玻璃钢 薄壁箱型梁 |
| 文章编号： | 1000-4750(2003)02-122-11 |
A BEAM ELEMENT FOR FRP THIN-WALL BOX BEAMS CONSIDERING BOTH SHEAR LAG AND SHEAR DEFORMATION |
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| ZHANG Xue-fu,LAI Yuan-ming,WU Ya-ping,ZHAO De-an,YU Wen-bing,ZHANG Shu-juan.A BEAM ELEMENT FOR FRP THIN-WALL BOX BEAMS CONSIDERING BOTH SHEAR LAG AND SHEAR DEFORMATION[J].Engineering Mechanics,2003,20(2):122-132. | |
| Authors: | ZHANG Xue-fu LAI Yuan-ming WU Ya-ping ZHAO De-an YU Wen-bing ZHANG Shu-juan |
| Affiliation: | ZHANG Xue-fu1,LAI Yuan-ming1,3,WU Ya-ping1,2,ZHAO De-an2,YU Wen-bing1,ZHANG Shu-juan1 |
| Abstract: | In this paper, the differential equations of FRP thin-walled box beams are established based on the principle of minimum potential energy. Both shear lag and shear deformation are taken into account and the pertaining element stiffness matrix and equivalent nodal force vector are given. A finite element program is developed and some numerical examples are studied. Good agreement is reached between the present predictions and other available results including those of computer code ANSYS. It is demonstrated that the proposed element is effective and reliable. |
| Keywords: | finite beam element shear lag FRP thin-wall box beam |
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