| 基于拉压与翘扭插值函数几何非线性刚度矩阵 |
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| 引用本文： | 刘坚,李开禧,王永华. 基于拉压与翘扭插值函数几何非线性刚度矩阵[J]. 土木建筑与环境工程, 2004, 26(2): 48-53 |
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| 作者姓名： | 刘坚 李开禧 王永华 |
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| 作者单位： | 重庆大学,土木工程学院,重庆,400045;广州大学,广州,510405;重庆大学,土木工程学院,重庆,400045 |
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| 摘 要： | 提出了翘曲扭转稳定函数的概念和计算公式，首次推导了基于扭转翘曲稳定插值函数的双轴对称开口轻型薄壁梁柱单元的翘曲扭转切线刚度矩阵，同时提出了基于拉压与翘扭稳定插值函数的轻钢梁柱单元空间几何非线性切线刚度矩阵。
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| 关 键 词： | 翘曲扭转稳定函数 翘曲扭转切线刚度矩阵 几何非线性分析 轻钢梁柱单元 |
| 修稿时间： | 2003-12-20 |
Geometric Nonlinear Stiffness Matrix Based on Tension-Compression and Torsion-Warping Interpolation Function |
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| LIU Jian. Geometric Nonlinear Stiffness Matrix Based on Tension-Compression and Torsion-Warping Interpolation Function[J]. Journal of Civil,Architectrual & Environment Engineering, 2004, 26(2): 48-53 |
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| Authors: | LIU Jian |
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| Abstract: | The conception and calculation formula on torsion-warping stability function is brought forward and the torsion-warping tangent stiffness matrix of bi-axisymmetric open thin wall and lightweight beam-column element is derived for the first time, based on torsion-warping stability interpolation function. At the same time, the spatial geometric tangent stiffness matrixes for beam-column element of lightweight steel structure based on tension-compression and torsion warping stability interpolation function are presented as well. |
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