三维编织复合材料高速储能飞轮多尺度拓扑优化设计方法研究

项目名称： 三维编织复合材料高速储能飞轮多尺度拓扑优化设计方法研究

项目编号： No.51505085

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 机械、仪表工业

项目作者： 闫晓磊

作者单位： 福建工程学院

项目金额： 20万元

中文摘要： 飞轮储能是一种高效、环保的新型能源技术，在航空航天、智能电网等领域应用广泛。目前缠绕成型的复合材料飞轮环向强度很高但径向强度却很低，限制了飞轮储能性能，究其根本是由于飞轮结构与材料性能没有合理匹配。本课题针对三维编织复合材料储能飞轮，提出一种结构-材料一体化的宏、细、微观多尺度协同的拓扑优化方法，解决复合材料储能飞轮结构与材料不匹配问题，大大提高飞轮储能性能。为此，明确复合材料结构与材料多尺度耦合机理，开发结构-材料多尺度协同的拓扑优化算法成为了问题的关键。本课题拟在深入研究三维编织复合材料有效性能精确预测方法、建立结构-材料多尺度耦合模型的基础上，提出三维编织复合材料储能飞轮多尺度协同拓扑优化方法，揭示飞轮宏观拓扑构型、细观尺度纤维束空间走向以及微观尺度纤维束中纤维和基体分布的规律。研究成果对促进大功率、高转速复合材料储能飞轮轻量化设计，拓展复合材料结构创新设计理论及方法具有重要意义。

中文关键词： 拓扑优化；储能飞轮；一体化设计；多尺度；三维编织复合材料

英文摘要： Flywheel for energy storage is a new, efficient and green energy technology, which has been used widely in the fields of aerospace, smart grid, etc. The current filament wound composite flywheel has high strength in the circumferential direction, but very low strength in the radial direction. This defect limits the energy storage capacity of the flywheel. Essentially, this is a problem of improperly matching the material properties with the flywheel structure. In this research project, a method of multi-scale, macro-meso-micro scales, concurrent topology optimization of structure and material is proposed for the 3D braided composite energy storage flywheel to solve the problem of mismatch of “structure and material”, so that energy storage capacity of the flywheel can be greatly improved. To achieve this, two key problems, clarifying the multi-scale coupling mechanism of composite structure and its material and developing an algorithm of multi-scale concurrent topology optimization of structure and material must be settled. In this research project, based on thoroughly researching the accurate prediction method of the effective properties of 3D braided composite and establishing a model of the coupling mechanism for structure and material, a multi-scale concurrent topology optimization method for the 3D braided composite energy storage flywheel is presented. Meanwhile, macro-scale topology configuration of the flywheel, meso-scale spatial arrangement of the fiber bundle and micro-scale distribution patterns of the fiber and matrix materials in the fiber bundle will be also revealed. The research will be of great significance in promoting the lightweight design of high-power and high rotating speed composite flywheel for energy storage and extending theories and methods for innovative design of the composite structure.

英文关键词： Topology optimization;Flywheel for energy storage ;Integrated design;Multi-scale;3D braided composite