| 含初缺陷损伤圆拱的动力屈曲 |
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| 引用本文： | 贺远松,唐文勇,张圣坤.含初缺陷损伤圆拱的动力屈曲[J].船舶力学,2006,10(5):68-75. |
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| 作者姓名： | 贺远松 唐文勇 张圣坤 |
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| 作者单位： | 上海交通大学海洋工程国家重点实验室,上海,200030 |
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| 基金项目： | 国家自然科学基金，上海市高校优秀青年教师后备人选资助项目 |
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| 摘 要： | 由Hamilton原理导出考虑初始缺陷及横向剪切变形时裂纹圆拱的动力屈曲控制方程;应用断裂力学中常用的线弹簧模型将裂纹引入到屈曲控制方程中;基于B-R动力屈曲判断准则,采用数值方法求解了受径向均布阶跃载荷作用时裂纹圆拱的动力屈曲;对比讨论了不同载荷幅值、裂纹长度、初始几何缺陷大小等因素对圆拱动力屈曲性能的影响.
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| 关 键 词： | 动力屈曲 圆拱 裂纹 初始缺陷 |
| 文章编号： | 1007-7294(2006)05-0068-08 |
| 收稿时间： | 2005-01-06 |
| 修稿时间： | 2005年1月6日 |
Dynamic buckling of cracked circular arch with initial geometric imperfection subject to radius impact |
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| HE Yuan-song,TANG Wen-yong,ZHANG Sheng-kun.Dynamic buckling of cracked circular arch with initial geometric imperfection subject to radius impact[J].Journal of Ship Mechanics,2006,10(5):68-75. |
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| Authors: | HE Yuan-song TANG Wen-yong ZHANG Sheng-kun |
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| Institution: | State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China |
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| Abstract: | For the cracked circular arch,including the influences of the transverse shear deformation and initial geometric imperfections,the governing equations of dynamic buckling were derived from Hamilton's philosophy.Basing on B-R dynamic buckling criterion,the dynamic buckling of cracked circular arch subjected to radius impact was solved by numerical method.The effects of different loadings,crack length and initial geometric imperfection on the dynamic buckling of circular arch were discussed and analysised. |
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| Keywords: | dynamic buckling circular arch crack initial imperfections |
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