The invention discloses an expandable cylindrical light shield based on a shape memory polymer composite material and a method, and belongs to the technical field of spaceflight expansion devices. A plurality of middle light blocking rings are arranged between the top light blocking ring and the bottom light blocking ring, the bottom end of the top light blocking ring, the top end of the bottom light blocking ring and the upper end and the lower end of each middle light blocking ring are hinged to one ends of a plurality of corresponding connecting beams respectively, and the opposite ends of every two corresponding connecting beams are fixedly connected with the corresponding ends of the corresponding elbow-shaped joints respectively. And the light shielding ring is glued with the light shielding film. The variable stiffness characteristic and the shape memory effect of the elbow-shaped joint truss and the shape memory polymer composite material elbow-shaped joint are utilized, under the action of electric heating driving excitation, the light shield mechanism in the folded state is unfolded, the light shield mechanism in the unfolded state can be folded and shaped, heating stimulation is stopped, the elbow-shaped joint stiffness is improved, and the structure is self-locked; integration of unfolding and self-locking of the light shield unfolding mechanism is achieved.
基于形状记忆聚合物复合材料的可展开筒状遮光罩及方法,属于航天展开装置技术领域。顶部挡光环与底部挡光环之间有多个中部挡光环,顶部挡光环的底端、底部挡光环的顶端以及每个中部挡光环的上端和下端分别与对应的多个连接梁的一端铰接,每两个对应的连接梁的相对端分别与对应的肘形关节的对应端固定连接;挡光环与遮光膜胶接。本发明利用肘形关节桁架和形状记忆聚合物复合材料肘形关节的变刚度特性和形状记忆效应,在电加热驱动激励作用下,收拢状态的遮光罩机构展开,展开状态的遮光罩机构,可收拢赋形,停止加热刺激,肘形关节刚度提升,结构自锁,实现遮光罩开展机构的展开和自锁一体化。
Deployable cylindrical light shield based on shape memory polymer composite material and method
基于形状记忆聚合物复合材料的可展开筒状遮光罩及方法
2025-01-14
Patent
Electronic Resource
Chinese
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