Wrinkle analysis of a space planar film reflect-array

Abstract：The presence of wrinkles in a membrane is the main factor that induces surface errors on space planar film reflect arrays. Based on the commercial finite element (FE) package ABAQUS, a numerical procedure for membrane wrinkle analysis was set up, and used to analyze a square planar film reflect-array under pure shear force to evaluate its induced wrinkle characteristics. First, the effect of shear force on the wrinkle pattern of the array was studied and validated by experiment. Second, the effect of prestress was studied. When the prestress increases, the quantity of the wrinkles increases, and the amplitude of the wrinkles decreases. Third, the influence of the boundary conditions was investigated. A frame side edge structure has a relatively smooth surface, but also relatively high stress. Finally, the behavior of a joint seam was analyzed. The results indicate that a joint band has a significant influence on the wrinkle pattern of the membrane. 作者： Author： Wei-wei XIAO  Wu-jun CHEN  Gong-yi FU 作者單位： Space Structures Research Centre, Shanghai Jiao Tong University, Shanghai 200030, China 期 刊： 浙江大學(xué)學(xué)報（英文版）（A輯：應(yīng)用物理和工程）   ISTICEISCI Journal： JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE A 年，卷(期)： 2011, 12(1) 分類號： V214 O312 Keywords： Space planar film reflect-array    Wrinkle analysis    Joint seam    機標(biāo)分類號： TH1 U21 機標(biāo)關(guān)鍵詞： shear force    boundary conditions    influence    finite element    significant    array    structure    quantity    analysis    results    errors    ABAQUS    frame    Based    main    high    set 基金項目： the National Natural Science Foundation of China

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