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为提高空间可展铰链的运行稳定性和可靠性,减轻结构质量,研究了碳纤维增强层合复合材料簧片单元的弯曲性能.以衡量簧片驱动能力的应变能、稳态弯矩以及簧片自锁能力的屈曲临界弯矩为力学性能指标.分析了可折叠自展开的簧片单元在弯曲折叠过程中,复合材料铺层角度、铺层厚度和簧片截面半径对各性能指标的影响.研究结果表明:随着复合材料铺层角度的增加,簧片驱动能力增强,但其自锁能力基本不变;随着复合材料铺层厚度和截面半径的增加,簧片的驱动能力和自锁能力均增强;随着材料铺层角度、截面半径的增加,簧片的横截面出现截面变形现象且伴随微小回弹.研究结果对于空间簧片式铰链驱动性能的改进具有一定的参考价值.
In order to improve the running stability and reliability of the space-developable hinge and reduce the structural quality, the flexural properties of the reed unit with carbon fiber reinforced composite laminates were studied.The strain energy, the steady state moment and the reed The critical buckling moment of self-locking capability is an index of mechanical properties.The influence of the angle of composite ply, the thickness of the ply and the radius of reed section on each performance index is analyzed in the process of bending and folding the foldable self-expanding reed unit. The results show that with the increase of composite ply angle, the reed driving ability is enhanced, but its self-locking ability is basically unchanged. With the increase of composite ply thickness and cross-section radius, the reed’s driving ability and self-locking With the increase of the radius of cross-section and the angle of material lay-up, the cross-section of the reed appears the phenomenon of cross-section deformation with slight rebound.The research results have certain reference value for the improvement of space Reed-Hinge driving performance.