Abstract The dynamic instability of a thin-walled carbon-fibre reinforced composite cylindrical shell is studied. The analysis is performed with the Finite Element code, ABAQUS, estimating the dynamic buckling load using the Budiansky–Roth criterion. The influence of the following factors on the dynamic behaviour of the shell is analysed: the shape of pulse loading, the initial geometric imperfection and the pulse duration. It is found that for short load duration, the structure resistance to pulse loading in the form of dynamic buckling load is significantly higher compared to the static buckling load. As load duration increases, the magnitude of the Dynamic Load Factor (DLF), defined as the ratio between the dynamic and static buckling loads, decreases significantly, reaching a value of DLF

中文翻译：

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冲击轴压下复合圆柱壳动态屈曲现象的参数研究

摘要 研究了薄壁碳纤维增强复合材料圆柱壳的动态失稳性。分析是使用有限元代码 ABAQUS 执行的，使用 Budiansky-Roth 准则估计动态屈曲载荷。分析了以下因素对壳体动力学行为的影响：脉冲载荷的形状、初始几何缺陷和脉冲持续时间。研究发现，对于短载荷持续时间，与静态屈曲载荷相比，结构对动态屈曲载荷形式的脉冲载荷的抵抗力明显更高。随着载荷持续时间的增加，动态载荷因子 (DLF) 的大小（定义为动态和静态屈曲载荷之间的比率）显着降低，达到 DLF 值