| 具有夹层的正交异性复合材料圆锥壳体的非线性轴对称屈曲分析 |
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| 引用本文： | 徐加初, 王乘, 刘人怀. 具有夹层的正交异性复合材料圆锥壳体的非线性轴对称屈曲分析[J]. 工程力学, 2001, 18(6): 81-87. |
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| 作者姓名： | 徐加初 王乘 刘人怀 |
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| 作者单位： | 1.华中理工大学, 武汉, 430074;2. 暨南大学, 广州, 510632 |
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| 摘 要： | 研究均布载荷作用下边缘可移夹支具有正交异性复合材料表层和软夹心的夹层圆锥壳非线性轴对称屈曲问题.利用变分原理导出具有正交各向异性表层夹层圆锥壳在均匀外压作用下的非线性轴对称屈曲问题的基本方程,采用修正迭代法[8]求得了可移夹支边界条件下壳体临界屈曲载荷的解析表达式,对几种典型的纤维增强复合材料表层夹层圆锥壳给出了数值结果和图表,讨论了几何参数和物理参数对临界屈曲载荷的影响。
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| 关 键 词： | 正交异性 夹层圆锥壳 非线性轴对称屈曲 修正迭代法 |
| 文章编号： | 1000-4750(2001)06-081-07 |
| 收稿时间： | 1999-10-16 |
| 修稿时间： | 1999-12-30 |
NONLINEAR AXISYMMETRIC BUCKLING OF CONICAL SANDWICH SHELLS WITH ORTHOTROPIC SKINS |
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| XU Jia-chu, WANG Cheng, LIU Ren-huai. NONLINEAR AXISYMMETRIC BUCKLING OF CONICAL SANDWICH SHELLS WITH ORTHOTROPIC SKINS[J]. Engineering Mechanics, 2001, 18(6): 81-87. |
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| Authors: | XU Jia-chu WANG Cheng LIU Ren-huai |
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| Affiliation: | 1.Huazhong University of Science and Technology, Wuhan 430074;2. Jinan University, Guangzhou 510632 |
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| Abstract: | This paper deals with the problem of nonlinear axisymmetric buckling for a conical sandwich shell which is composed of orthotropic composite skins and a soft core under the action of uniform pressure. The fundamental equations of the nonlinear stability for conical sandwich shells are derived by means of calculus of variations . An analytic solution for the critical buckling pressure is obtained by use of modified iteration method . Numerical results are obtained for conical sandwich shells with three types of fiber-reinforced composite skins. The effects of geometric and physical parameters on buckling behavior are illustrated and discussed. |
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| Keywords: | orthotropy conical sandwich shells nonlinear axisymmertric buckling modified iteration method |
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