过程集成与设计优化技术在碳纤维增强树脂材料设计中的应用

研究过程集成与设计优化(PIDO)技术在复合材料设计中的应用。以航空器领域上广泛应用的碳纤维增强树脂基复合材料(CFRP)为例,开展结构刚度优化设计。根据复合材料中层压板分布特性,以结构固有频率最大为优化目标,通过选择层压板各单层厚度和铺设角度,使用有限元方法模拟铺设角度变化并输出结果,采用优化算法对结果进行判定,得到结构刚度的优化结果。对比两种不同的PIDO优化过程,提出一种结果更优的优化策略——该策略在提高结构刚度的同时,兼顾轻量化,可为优化设计提供更多思路。

Application of progress integration and design optimization in carbon fiber reinforced polymer design

This paper focuses on the Process Integration and Design Optimization (PIDO) technique in the design of composite materials to improve the structure stiffness, taking the widely-used carbon fiber reinforced polymer (CFRP) in the field of aircraft as an example. Calculation is based on the composite structure of the laminate, and aims at maximizing the intrinsic frequency of the structure. By adjusting the thickness and layout angle of laminate in composite material plate, the optimization results could be obtained from the simulation of angle change by the finite element numerical method. The frequency of the structure can be used as the optimization objective, and the results are judged by the optimization algorithm. Finally, this strategy provides a better optimization which improves the stiffness of the structure and reduces the weight, by compare two PIDO optimization process, more method for the optimization design can be provided.