对复合材料旋转壳的失稳问题进行了有限元推导,建立了考虑横向剪切变形的旋转壳稳定性分析模型.在应变向量阵中引入了横向剪切应变,从而考虑了剪切的影响.为了避免剪切自锁,刚度的计算采用一点高斯积分法,几何刚度的推导采用Stricklin法.最终将稳定性问题归结为特征值问题.数值算例表明,对于各向同性和复合材料旋转壳,横向剪切变形均使其临界载荷降低.在稳定性分析中,横向剪切变形对各向同性材料旋转壳的影响较小,对复合材料的影响较大.
参考文献
| [1] | 李军,薛明德.旋转周期复合材料层合结构的有限元屈曲分析[J].复合材料学报,2005,22(3):150-155.Li Jun,Xue Mingde.Buckling analysis of rotationally periodic laminated composite shells by FEM[J].Acta Materiae Compositae Sinica,2005,22(3):150-155. |
| [2] | Bushnell D.Analysis of buckling and vibration of ring-stiffened,segmented shells of revolution[J].Int J Solids Structures,1970,6:157-181. |
| [3] | Subbian J,Nararazan R.Stability analysis of ring-stiffened shells of revolution[J].Journal of Ship Research,1982,26(2):125-134. |
| [4] | 周承芳.组合加肋旋转壳的强度和稳定性有限元分析[J].计算结构力学及其应用,1990,17(1):45-53.Zhou Chengfang.Finite element analysis of strength and instability of ring-stiffened combined shell of revolution[J].Computational Structure Mechanics and Applications,1990,17(1):45-53. |
| [5] | 温玄玲,陈浩然.等网格加筋复合材料锥柱结合壳的稳定性有限元分析[J].玻璃钢/复合材料,1990(2):23-29.Wen Xuanling,Chen Haoran.Finite element stability analysis of composite cone and circular cylindrical combined shell with equivalent net ribbing[J].Fiber Reinforced Plastics/Composites,1990(2):23-29. |
| [6] | 张富强.轴对称复合材料迭层壳考虑横向剪切变形的有限元分析[J].燕山大学学报,1998,22(3):266-271.Zhang Fuqiang.Finite element analysis of axisymmetric composite laminated shell considering lateral shear strain[J].Journal of Yanshan University,1998,22(3):266-271. |
| [7] | 周承芳,温玄玲.复合材料旋转壳强度的有限元分析和横向剪切变形影响分析[J].大连工学院学报,1983,22(14):129-132.Zhou Chengfang,Wen Xuanling.The strength analysis by means of the finite element method for the composite material revolution shell and the effect analysis of the transverse shear deformation[J].Journal of Dalian Institute of Technology,1983,22(4):129-132. |
| [8] | 蒋咏秋.复合材料力学[M].西安:西安交通大学出版社,1990:9-88.Jiang Yongqiu.Mechanics of Composite[M].Xi'an Jiaotong University Press,1990:9-88. |
| [9] | 王勖成,邵敏.有限单元法基本原理和数值方法[M].北京:清华大学出版社,1995:365-379.Wang Xucheng,Shao Min.Finite Element Method[M].Beijing:Tsinghua University Press,1995:365-379. |
| [10] | 宋天霞,邹时智,杨文兵.非线性结构有限元计算[M].武汉:华中理工大学出版社,1996:97-102.Song Tianxia,Zou Shizhi,Yang Wenbing.Nonlinear Structure Computation with Finite Element Method[M].Wuhan:Huazhong University of Science and Technology Press,1996:97-102. |
| [11] | 王震鸣.复合材料力学和复合材料结构力学[M].北京:机械工业出版社,1991:418-420.Wang Zhenming.Mechanics and Structural Mechanics of Composite[M].Beijing:China Machine Press,1991:418-420. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%