复合材料天线罩多学科优化  

The Multidisciplinary Optimization of Composite Radome

作　　者：乔玉[1] 周光明[1] 刘伟先[1] 

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016

出　　处：《机械科学与技术》2015年第3期476-480,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：江苏高校优势学科建设工程项目资助

摘　　要：为缩短天线罩设计周期、提升天线罩综合性能,提出了一种复合材料天线罩多学科优化方法。对优化变量、优化目标及约束进行了分析,建立了天线罩优化数学模型,提出了以电性能为目标,力学性能为约束的优化方案。分别选取了口径积分-表面积分法和有限元法计算天线罩电性能和力学性能,并以多岛遗传算法为优化方法,建立了多学科优化流程。选择算例进行了优化分析。结果表明:优化过程在确保力学性能要求的基础上成功地提升了电性能,验证了优化方法的可行性。To shorten the design cycle and enhance the overall performance of composite radome, a multidisciplinary optimization method is proposed. The optimization model is established and the optimization variables,objects and constraints are analyzed. An optimization scheme is proposed which takes the electrical properties as the objects and the mechanical properties as the constraints. The aperture integration-surface integration( AI-SI) method is employed to analysis its electrical properties while the finite element method( FEM)is employed to analysis its mechanical properties. The optimization process is established based on the multi-island genetic algorithm( MIGA). Numerical analysis of an example is carried out and the results show that the electrical properties of the radome are successfully improved under the ensurance of mechanical properties. The feasibility of the optimization method is validated.

关 键 词：天线罩 多学科优化 多岛遗传算法 透波系数 

分 类 号：TN820.81[电子电信—信息与通信工程] TB33[一般工业技术—材料科学与工程]