摘要
飞行器在工作时过载、振动等力学条件严酷,同时对搭载设备严格限制重量。如何在保证结构强度和变形量满足飞行环境使用要求的前提下,解决天线轻型化问题,是机载天线设计最紧要的任务之一。提出了一种迭代优化设计方法,此方法基于结构强度变化特征对机载天线进行轻型化设计,具体为采用有限元分析方法结合实际力学环境要求对初步设计的天线进行强度校核,调节设备的横断面尺寸使试验变形应力及重量满足天线设计要求。最终通过仿真计算迭代优化,实现机载天线减重的目的。该设计方法充分融合了强度校核和迭代优化的思想,缩短了产品的研发周期,实现了产品最优化设计,为机载设备减重提供了解决方案。
The aircraft has severe mechanical conditions such as overload and vibration during operation.The environment in which airborne antennas are located is complex and harsh.The weight index of antennas is strict.How to solve the problem of light weight on the premise of ensuring that the structural strength and deformation meet the requirements is one of the most important tasks in airborne antenna design.This paper proposed a iterative optimization method based on the variation characteristics of structural strength through iterative optimization.By using the Finite Element Method for simulation calculation,the weight reduction design of the airborne antenna base was carried on.The cross-sectional size of the equipment is adjusted to make the deformation and the stress and the weight suffices requirements of the design.It can shorten the period of product development and lower the product cost by the method presented in this paper.
作者
霍小宁
张更
谭志红
HUO Xiaoning;ZHANG Geng;TAN Zhihong(Beijing Institute of Space Long March Vehicle,Beijing 100076,China)
出处
《空间电子技术》
2021年第4期58-62,共5页
Space Electronic Technology
关键词
机载天线
有限元分析
迭代优化算法
结构设计
airborne antenna
finite element analysis
iterative optimization method
structural design
