| 湿热载荷下含损伤夹层板分层扩展判定分析 |
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| 引用本文： | 张志民,李向阳.湿热载荷下含损伤夹层板分层扩展判定分析[J].北京航空航天大学学报,2001,27(3):336-339. |
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| 作者姓名： | 张志民 李向阳 |
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| 作者单位： | 北京航空航天大学 飞行器设计与应用力学系 |
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| 基金项目： | 航空基础科学基金;98B51027; |
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| 摘 要： | 含面板内分层损伤的复合材料夹层板在承受压缩载荷时,很容易发生局部屈曲,导致分层扩展和结构失效,恶劣的湿热环境更是使之加剧.利用可动边界变分问题对分层扩展进行了分析,导出了分层边界的逐点能量释放率表达式,采用Rayleigh-Ritz法研究了任意的湿热环境对含损伤的复合材料夹层板分层扩展性能的影响.
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| 关 键 词： | 环境效应 复合材料力学 层板 扩展 能量释放率 |
| 文章编号： | 1001-5965(2001)03-0336-04 |
| 收稿时间： | 2000-02-22 |
| 修稿时间： | 2000年2月22日 |
Delamination Growth of Composite Sandwich under Hygrothermal and Mechanical Loads |
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| ZHANG Zhi-min,LI Xiang-yang.Delamination Growth of Composite Sandwich under Hygrothermal and Mechanical Loads[J].Journal of Beijing University of Aeronautics and Astronautics,2001,27(3):336-339. |
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| Authors: | ZHANG Zhi-min LI Xiang-yang |
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| Institution: | Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics |
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| Abstract: | The local buckling may occur in composite sandwich with delamination induced by impact damage. This often causes delamination growth and structure failure. The delamiantion growth is studied by using the variational method of moving boundary, and the formulas of energy release rate G along the delamination front are obtained. By employing Rayleigh Ritz method, the hygrothermal effect on buckling character of composite sandwich plates containing delamination between two faceplate laminae is studied. |
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| Keywords: | environmental effect mechanics of complex materials laminates growth energy release rate |
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