Research into topology optimization and the FDM method for a space cracked membrane
Research into topology optimization and the FDM method for a space cracked membrane
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空间裂纹膜拓扑优化及FDM方法研究
DOI：
10.1016/j.actaastro.2017.03.033
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发表时间：
2017-07-01
影响因子：
3.5
通讯作者：
Duan, Yongchao
中科院分区：
文献类型：
--
作者：
Hu, Qingxi;Li, Wanyuan;Duan, Yongchao
本文主要针对空间膜易撕裂的问题，提出了一种基于拓扑优化、复合材料和快速成型等多学科优势的空间膜仿生强化肋结构。研究了仿生强化筋膜的优化方法和建模方法。选择适用于空间环境的PEEK和SCF/PEEK复合材料，采用FDM技术。通过拓扑优化，获得了具有良好拉伸和撕裂能力的仿生强化筋。对裂纹膜、带PEEK增强筋的裂纹膜和含SCF/PEEK增强筋的裂纹膜进行了试验，得到了试验数据。比较了三例拉伸骨折和张力骨折的情况。实验结果表明，仿生强化筋结构的膜具有更好的力学性能，PEEK和SCF/PEEK强化筋结构的膜强度分别提高了266.9%和185.9%。增强筋结构大大提高了膜裂纹的止裂能力，对避免膜撕裂、保证航天器轨道寿命具有重要意义。
The problem that the space membranes are easily torn open is the main focus in this paper, and a bionic strengthening-ribs structure is proposed for a space membrane based on interdisciplinary strengths, such as topology optimization, composite materials, and rapid prototyping. The optimization method and modeling method of membranes with bionic strengthening-ribs was studied. The PEEK and SCF/PEEK composite material which are applied to the space environment are chosen, and FDM technology is used. Through topology optimization, bionic strengthening-ribs with good tensile and tear capacities were obtained. Cracked membranes, cracked membranes with PEEK strengthening-ribs and SCF/PEEK strengthening-ribs were tested and test data were obtained. An extension situation and tension fracture were compared for three cases. The experimental results showed that membranes with the bionic strengthening-ribs structure have better mechanical properties, and the strength of the membranes with PEEK and SCF/PEEK strengthening-ribs were raised, respectively, up to 266.9% and 185.9%. The strengthening-ribs structure greatly improves the capacity to halt membrane crack-growth, which has an important significance to avoid membrane tear, and to ensure the spacecraft orbital lifetime.