| 用杂交元分析层合板壳热弹性 |
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| 引用本文： | 李书,孙良新. 用杂交元分析层合板壳热弹性[J]. 南京航空航天大学学报, 1991, 0(2) |
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| 作者姓名： | 李书 孙良新 |
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| 作者单位： | 南京航空学院飞机系(李书)，南京航空学院飞机系(孙良新) |
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| 摘 要： | 本文基于Hellinger-Reissner变分原理,导出了适用于层合板壳热弹性分析的应力杂交元模型,单元有较少的应力参数和坐标不变性。此外,为了考虑横向剪切变形的影响,本文又在Reissner-Mindlin型假设的基础上,提出了分段直线假设,即将层合板壳沿厚度方向分成若干段,每段包含有若干层,然后作若干段直线假设。这样处理既提高了精度,又不过多地增加计算工作量。数值结果表明,本单元性能是好的,分段直线假设是有效的。
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| 关 键 词： | 弹性力学 热弹性效应 有限元法 层合板壳 |
Thermoelasticity Analysis of Laminated Plates and Shells Using Hybrid-Stress Elements |
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| Li Shu Sun Liangxin. Thermoelasticity Analysis of Laminated Plates and Shells Using Hybrid-Stress Elements[J]. Journal of Nanjing University of Aeronautics & Astronautics, 1991, 0(2) |
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| Authors: | Li Shu Sun Liangxin |
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| Affiliation: | Department of Aircraft Engineering |
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| Abstract: | Based on Hellinger-Reissner variational principle, a hybrid-stress model for the thermoelasticity analysis of laminated plates and shells is derived in this paper. The elements contain a few number of stress parameters which are invariant. Besides, in order to include the effect of transverse shear deformation and based upon the Reissner-Mindlin type the hypothesis of a sectionalized straight line is suggested that divides the straight line along the thickness direction into broken lines. Each broken line contains a certain number of layers. The numberical results show that the elements and the hypothesis are precise, economic and practical. |
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| Keywords: | elasticity mechanics thermoelastic effect finite element methods laminated plates and shells |
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