| 轴压-弯曲联合荷载下功能梯度材料圆柱壳的屈曲 |
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| 引用本文： | 黄怀纬,韩强,魏德敏.轴压-弯曲联合荷载下功能梯度材料圆柱壳的屈曲[J].华南理工大学学报(自然科学版),2012,40(4):158-161. |
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| 作者姓名： | 黄怀纬 韩强 魏德敏 |
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| 作者单位： | 华南理工大学 土木与交通学院,广东广州,510640 |
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| 基金项目： | 广东省自然科学基金资助项目，中国博士后科学基金资助项目，华南理工大学中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 将理论分析和数值模拟相结合,研究了轴压-弯曲联合荷载作用下功能梯度材料圆柱壳的屈曲行为.以经典Donnell壳体理论为基础,得到功能梯度材料圆柱壳的屈曲控制方程,并通过本征值分析方法得到结构屈曲的临界条件.理论计算结果表明,弯曲屈曲临界荷载随轴压荷载的增长线性递减,材料组分中陶瓷含量的增加有利于结构屈曲临界荷载的提高.理论结果与有限元软件ABAQUS的数值结果相吻合,验证了理论的可靠性.
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| 关 键 词： | 功能梯度材料 圆柱壳 屈曲 联合荷载 有限元 |
Buckling of FGM Cylindrical Shells Under Combined Axial Compression and Bending Loads |
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| Huang Huai-Wei
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Han Qiang
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Wei De-Min.Buckling of FGM Cylindrical Shells Under Combined Axial Compression and Bending Loads[J].Journal of South China University of Technology(Natural Science Edition),2012,40(4):158-161. |
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| Authors: | Huang Huai-Wei Han Qiang Wei De-Min |
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| Institution: | Huang Huai-Wei Han Qiang Wei De-Min (School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China) |
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| Abstract: | By combining theoretical analysis with numerical simulation,the buckling behaviors of FGM(Functionally Graded Material) cylindrical shells under combined axial compression and bending loads are investigated.Then,on the basis of the classical Donnell shell theory,a buckling governing equation of the shells is deduced,and the critical condition for the buckling is determined via an eigenvalue analysis.Theoretically calculated results reveal that the critical load of bending buckling linearly decreases with the increase of axial compression,but increases with the content of ceramic constituent in FGM.The theoretical results are finally compared with the numerical ones obtained by ABAQUS simulation,with a good accordance being found,which means that the proposed theory is reliable. |
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| Keywords: | functionally graded materials cylindrical shell buckling combined load finite element |
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