Title:
DESIGN OPTIMIZATION METHOD FOR SHAPE OF CREASE-SUPPRESSING HOLDER FOR SPACE FILM STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/120239
Kind Code:
A1
Abstract:
A design optimization method for the shape of a crease-suppressing holder for a space film structure, solving the problem in which a space film structure is prone to creases under a tensile force of a conventional holder. The method comprises: on the basis of nonlinear finite unit analysis, changing a loading boundary condition by optimizing a holder shape, maximizing the minimum principal stress of units in a film region, adjusting a principal stress distribution, and using a global optimization algorithm to find a global optimal design, so as to obtain a novel holder pattern having an arch-shaped or convex border, thereby completely suppressing creases. The method suppresses generation of creases in a thin film without cutting the thin film, thereby ensuring a sufficiently large operation area of the thin film. The invention is suitable for designing a holder of a space film structure, such as a space antenna or a solar sail, facilitates crease suppression of a film, and guarantees the operational performance of the structure without increasing costs for manufacturing, launching, and operations.
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Inventors:
LUO YANGJUN (CN)
XING JIAN (CN)
KANG ZHAN (CN)
LI MING (CN)
XING JIAN (CN)
KANG ZHAN (CN)
LI MING (CN)
Application Number:
PCT/CN2018/122264
Publication Date:
June 27, 2019
Filing Date:
December 20, 2018
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
G06F17/50
Foreign References:
| CN108133097A | 2018-06-08 | |||
| CN106897491A | 2017-06-27 | |||
| CN105868476A | 2016-08-17 | |||
| CN106777768A | 2017-05-31 | |||
| US6876956B1 | 2005-04-05 |
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