受轴向压缩GFRP圆柱壳渐进失效行为分析

On Failure Mode of GFRP Circular Shells Subjected to Axial Low Velocity Crash

对层状纤维复合材料ＧＦＲＰ圆柱壳受轴向压缩下的失效模式进行准静态下试验研究。研究此类薄壁结构的缓冲性能，分析其渐进压缩破损模式和整体破坏模式的形成机理。结果表明随着纤维铺设角度的改变其压缩失效模式发生变化，并影响结构的能量吸收能力、其破损模式的主导形式与分层扩展强度、环向断裂强度和纤维与基体脱胶裂纹相关。

In this paper the axial crush failure model of fiber composite circular tubes under theaction of axial crush load are investigated by taking experiment analysis. The obtained resuts show thatmodel of damage changes with the different fiber angle, its crush behaviors are determinated by itsfailure model. The damage mechamism of progressive failure and entire structure failure are also discussed. It is shown that effects of crush failure model on energy -- absorption of fiber composite materialsunder crash condition is also remarkable.