| 考虑纵横弯曲的空间杆系有限元计算 |
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| 引用本文： | 刘文华,付志一,杨庆山.考虑纵横弯曲的空间杆系有限元计算[J].中国安全科学学报,2004,14(12):62-66. |
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| 作者姓名： | 刘文华 付志一 杨庆山 |
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| 作者单位： | 1. 北京交通大学土木建筑工程学院
2. 中国农业大学应用力学系 |
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| 摘 要： | 在普通刚架有限元计算模型的基础上 ,推导出了考虑空间纵横弯曲有限元的单元刚度矩阵和形函数 ,单元刚度矩阵和形函数考虑了轴力的影响。并以此编制了“kjgj”有限元软件 ,软件考虑了轴力引起的二阶效应。用平面和空间算例进行验证 ,单根杆件只剖分一个单元计算得到的精度可以达到商业软件剖分多个单元达到的精度。
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| 关 键 词： | 钢结构 有限元 纵横弯曲 单刚 形函数 |
| 修稿时间： | 2004年9月1日 |
Computing Method on FEM for Vertical and Horizontal Bending of Spatial Bars |
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| LIU Wen-hua,FU Zhi-yi,YANG Qing-shan.Computing Method on FEM for Vertical and Horizontal Bending of Spatial Bars[J].China Safety Science Journal,2004,14(12):62-66. |
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| Authors: | LIU Wen-hua FU Zhi-yi YANG Qing-shan |
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| Institution: | LIU Wen-hua 1 FU Zhi-yi 2 YANG Qing-shan 1 |
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| Abstract: | Based on ordinary computing model on finite element in steel frame, a new element stiffness matrix and calculation approach of equal load is derived taking the influence of vertical and horizontal bending into account. A finite element program named “kjgj" is developed, which can be used to verify the plane and space stiff structures. Three examples are taken to testify and compare with the theoretical result. The result proves that the program is feasible and the calculated result is accurate. |
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| Keywords: | Steel structure Finite element Vertical and horizontal bending Element stiffness matrix Form function |
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