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| Numerical Simulation and Flattening Tests of Compression and Pulling of Lenticular ThinWalled Tubular Space Booms |
| CAI Qiyao1，CHEN Wujun1，ZHANG Daxu1，PENG Fujun2，FANG Guangqiang2
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| (1. Space Structures Research Centre, Shanghai Jiaotong University, Shanghai 200030, China；
2. Aerospace System Engineering Shanghai, Shanghai 201108, China) |
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Abstract Abstract： Space mast is one of the basic deployable space structures which is widely used and studied. First, the work mechanism of compression and pulling flattening of thinwalled tube was analyzed. Then, a numerical simulation method was proposed, and a comparative analysis was performed thoroughly of the structural behavior, including the stress, strain, and loaddisplacement variation. After that, the test of thinwalled tube flattening by compression and pulling were conducted, and the test results were verified with numerical simulation. Finally, the detailed test results were presented, such as strain, tip displacement, and a numerical simulation was performed for the test. The results indicate that the numerical simulation is effective and correct. Large displacement with small strain appears in flattening. Meanwhile, the stress, strain and loaddisplacement vary similarly in flattening by compression and pulling. This paper is valuable for the optimization design of lenticular thinwalled tube．
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Received: 20 April 2015
Published: 28 April 2016
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