空间充气支撑管的轴压屈曲分析

Analyze on the axial-loading buckling of the space inflatable tube

将用于空间的Kapton-Al-Kapton充气展开支撑管视为圆柱薄壳,将其初始折痕、褶皱作为初始几何缺陷,采用奇异摄动法研究初始几何缺陷对屈曲荷载和后屈曲平衡路径的影响。结果表明,初始几何缺陷降低了充气支撑管的屈曲载荷,但不同的几何参数与屈曲模态下,充气支撑管对缺陷的敏感度是不同的。

In this paper the Kapton-A1-Kapton surporting pipe used in space, which is filled with gas for unfolding, is taken as cylinder thin shell, its initial folding faults and wrinkles are considered as initial geometric deficiency, the singular perturbation technique was applied to research the effects of initial geometrical defects on buckling load and geometrical parameters and buckling modes.