| Timoshenko环梁加强圆柱壳的稳定性 |
| |
| 引用本文： | 李国栋,尚新春. Timoshenko环梁加强圆柱壳的稳定性[J]. 辽宁工程技术大学学报(自然科学版), 2007, 26(5): 694-696 |
| |
| 作者姓名： | 李国栋 尚新春 |
| |
| 作者单位： | 北京科技大学,土木与环境工程学院,北京,100083;中国华电工程(集团)有限公司,北京,100044;北京科技大学,数学力学系,北京100083 |
| |
| 基金项目： | 国家自然科学基金资助项目(50632010) |
| |
| 摘 要： | 研究了环肋的剪切效应对环肋圆柱壳总体稳定性的影响。引入描述环肋变形的四个广义位移及其对应的壳体变形的四个广义位移,采用Timoshenko环梁理论来分析环肋变形,应用Ritz法对环肋圆柱壳的总体稳定性进行了研究。给出的临界载荷数值结果与文献的实验值吻合较好。计算结果还表明对于外部均匀承压的环肋圆柱壳,环肋的面内剪切变形对较低环向屈曲波数下的总体失稳临界载荷影响是微小的,但对较高环向屈曲波数下失稳载荷的影响是明显的。
|
| 关 键 词： | 环肋圆柱壳 Ritz法 Timoshenko环梁 弹性稳定性 |
| 文章编号： | 1008-0562（2007）05-0694-03 |
| 修稿时间： | 2005-09-02 |
Stability of Timoshenko ring beam-stiffened cylindrical shell |
| |
| LI Guo-dong,SHANG Xin-chun. Stability of Timoshenko ring beam-stiffened cylindrical shell[J]. Journal of Liaoning Technical University (Natural Science Edition), 2007, 26(5): 694-696 |
| |
| Authors: | LI Guo-dong SHANG Xin-chun |
| |
| Affiliation: | 1.College of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2.Department of Mathematics and Mechanics, University of Science and Technology Beijing, Beijing 100083, China; 3. China Huadian Engineering Co., Ltd., Beijing 100044, China |
| |
| Abstract: | The effect of shear deformation on the overall stability of ring-stiffed cylindrical shell is considered.Four generalized displacements for the ring corresponding to that for the shell are introduced,and Timoshenko beam theory is used to analyze deformation of the ring.The overall stability of ring-stiffed circular shell is investigated by using Ritz method.The present numeric results of critical loads are well close to that of experiments in reference.For ring-stiffed shell subjected to uniform external pressure,the numeric results also show that the effect of shear of ring on the overall critical loads in the lower wave numbers of loop buckling is tiny,however the effect is obvious in the higher that. |
| |
| Keywords: | ring-stiffened cylindrical shell Ritz methods Timoshenko circle beam elastical instability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
