基于非线性瞬态响应的空间站柔性太阳翼在轨载荷分析

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (14) : 22-28.

论文

臧旭1,2，吴松2，唐国安1，郭其威2

作者信息 +

Nonlinear transient on-orbit load analysis of a flexible solar array

ZANG Xu1,2，WU Song2，TANG Guoan1，GUO Qiwei2

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文章历史 +

摘要

针对展开面积大、机构环节多、带有柔性索/膜结构的空间站太阳翼，建立精细的有限元模型、分析其在轨高强度激励条件下的瞬态变形和应力是强度设计所必须完成的环节。利用“间隙-接触”(Gap)单元的力学特性，将其倒置后作为钢丝绳与收藏箱的连接单元，一举解决了柔性阵面预紧力施加、钢丝绳不连续拉压刚度模拟以及收藏箱弹性变形补偿等多个问题，成功获得了太阳翼重要部件的瞬态剪力、弯矩等载荷结果，为产品设计提供了重要决策依据。结果也表明基于线性模型的计算方法应用于此问题存在显著不足。

Abstract

The space station solar array is usually flexible cable/membrane structure with large developement area and plenty of mechanism links. It is necessary to establish a fine finite element model, and analyze the transient deformation and stress under high strength on-orbit load conditions. By using the mechanical properties of the Gap element, the inverted Gap elements is used as the connecting unit between the flexible substrate and the storage boxe. Several problems such as pretigthening force on flexible substrate, simulation of discontinuous tension and compression stiffness of the cable, elastic deformation offset of the storage boxe are solved in one stroke. The results of transient shear force and bending moment of improtant companents of solar array are obtained successfully, which provides important decision basis for product design. The results also show that there are significant shortcomings in the application of linear model to this promlem.

关键词

柔性太阳翼 / 在轨载荷 / 非线性瞬态响应

Key words

flexible solar srrsy

/ on-orbit load / nonlinear transient response

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臧旭1,2，吴松2，唐国安1，郭其威2. 基于非线性瞬态响应的空间站柔性太阳翼在轨载荷分析[J]. 振动与冲击, 2020, 39(14): 22-28

ZANG Xu1,2，WU Song2，TANG Guoan1，GUO Qiwei2. Nonlinear transient on-orbit load analysis of a flexible solar array[J]. Journal of Vibration and Shock, 2020, 39(14): 22-28

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