Based on a comparative analysis of the simulation methods for membrane structures, the constitutive relationship of the membrane elements considering the wrinkle problem was modified using the VUMAT subroutine to overcome the difficulty that the membrane elements cannot withstand the compressive stress. The performance of the polyimide film material was tested by Three Dimensional Digital Image Correlation (3D-DIC). The test shows that the equivalent modulus of the folded film material was about 15% lower than that of the film material without crease. Based on the difference of flex modulus of elasticity, the deployment process of Miura origami was simulated. The situations with different number of loading points are compared in terms of the two indicators of flatness and maximum stress. The results show that increase in the number of points is beneficial to flatness and maximum stress of the structure. Finally, a new film folding program is proposed based on the concept of structure forming finding and Miura origami.
ZHANG Qian
,
CAI Jianguo
,
DING Yifan
,
FENG Jian
. Design of fold-development program for film reflective surface structures[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018
, 39(S1)
: 722268
-722268
.
DOI: 10.7527/S1000-6893.2018.22268
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