外部压力作用下复合材料层合圆柱壳的脱层扩展分析

傅衣铭; 杨金花

外部压力作用下复合材料层合圆柱壳的脱层扩展分析

傅衣铭¹,
杨金花^1,2

1.
湖南大学力学与航空航天学院,长沙 410082;2.长沙理工大学桥梁与结构工程学院,长沙 410076

基金项目: 国家自然科学资金资助项目(10572049)

详细信息

作者简介:
傅衣铭(1945- ),男,湖南湘潭人,教授,博士生导师(联系人.E-mail:Fuyiming1@yahoo.com).

中图分类号: O343
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- 被引次数: 0
出版历程
- 收稿日期: 2006-03-28
- 修回日期: 2007-06-26
- 刊出日期: 2007-09-15

Analysis of Delamination Growth for Composite Laminated Cylindrical Shells Under External Pressure

FU Yi-ming¹,
YANG Jin-hua^1,2

1.
College of Mechanics and Aerospace, Hunan University, Changsha 410082, P. R. China;

摘要

摘要: 含脱层的层合圆柱壳在承受外部压力作用时，容易发生脱层扩展，进而引起结构失效．基于可动边界变分原理并考虑脱层间的接触效应对圆柱壳在外部压力作用下的脱层扩展进行了分析，同时应用Griffith准则，导出了脱层前缘各点处的能量释放率表达式，且以轴对称脱层层合圆柱壳为例进行了数值计算，讨论了脱层大小、脱层深度、几何尺寸、材料性质及纤维铺层方式等因素对脱层扩展的影响．
- 复合材料 /
- 层合圆柱壳 /
- 外部压力 /
- 脱层扩展 /
- 能量释放率 /
- 接触效应
Abstract: The delamination growth may occur in delaminated cylindrical shells under external pressure. This will cause structure failure. By using the variational principle of moving boundary and considering the contact effect between delamination regions, the delamination growth was investigated for cylindrical shells under the action of external pressure. At the same time, according to the Griffith criterion, the formulas of energy release rate along the delamination front were obtained. In the numerical calculation, the delamination growth of axisymmetrical laminated cylindrical shells was analyzed. And the effects of delamination sizes and depths, the geometrical parameters, the material properties and the laminate stacking sequences on delamination growth were discussed.
- composite /
- laminated cylindrical shell /
- external pressure /
- delamination growth /
- energy release rate /
- contact effect

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参考文献(17)

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