| ????Timoshenko???????????? |
| |
| 引用本文： | 朱炳麒,陈学宏.????Timoshenko????????????[J].力学与实践,2008,30(1):31-34. |
| |
| 作者姓名： | 朱炳麒 陈学宏 |
| |
| 作者单位： | 河海大学机电工程学院，江苏 常州 213022 河海大学 |
| |
| 摘 要： | 将理性有限元法引入到Timoshenko梁问题中，提出了一种理性Timoshenko梁单元，克服了
剪切锁死现象. 在推导控制方程时，与传统有限元方法采用Lagrange插值不同，
理性有限元法用Timoshenko梁弯曲问题的基本解逼近单元内部场. 运用该梁单元分析
Timoshenko梁时，无需缩减积分，就能避免剪切锁死，并且极大地提高了计算精度，说明
理性有限元法具有广泛的应用前景.
|
| 关 键 词： | 理性有限元法 Timoshenko梁 理性Timoshenko梁单元 有限元法 剪切锁死 |
| 收稿时间： | 2007-06-14 |
| 修稿时间： | 2007-08-02 |
RATIONAL TIMOSHENKO BEAM ELEMENT AND ITS APPLICATION |
| |
| ZHU Bingqi,CHEN Xuehong.RATIONAL TIMOSHENKO BEAM ELEMENT AND ITS APPLICATION[J].Mechanics and Engineering,2008,30(1):31-34. |
| |
| Authors: | ZHU Bingqi CHEN Xuehong |
| |
| Abstract: | Rational FEM is used in Timoshenko beam problems. A
kind of rational Timoshenko beam element is proposed, to avoid shear locking.
In deriving the
governing equations, some basic analytic solutions of
Timoshenko beam problems are used to approximate the inner field of the element. This
method is different from Lagrange interpolation used in the conventional
FEM. The rational
Timoshenko beam element can avoid shear locking without a reduced
integration. Numerical results show that the element's precision is very high.
It is shown that the rational FEM has a very wide application. |
| |
| Keywords: | rational FEM Timoshenko beam rational Timoshenko beam element FEM shear locking |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《力学与实践》浏览原始摘要信息 |
| 点击此处可从《力学与实践》下载免费的PDF全文 |
