机载微型显示器拓扑优化设计  

Topology Optimization Design of Airborne Micro Display

作　　者：王宇 WANG Yu(AVIC Huadong Photoelectric Co.,Ltd.,Wuhu 241002,China)

机构地区：[1]中航华东光电有限公司,安徽芜湖241002

出　　处：《电子机械工程》2025年第2期29-34,共6页Electro-Mechanical Engineering

摘　　要：机载微型显示器作为辅助显示设备和备用显示设备,对飞机的飞行安全以及任务执行至关重要。振动作为引起机载电子设备失效的主要原因之一,在机载微型显示器的结构设计中需重点关注。文中以某机载微型显示器为研究对象,通过随机振动仿真和疲劳分析获得振动过程中结构的最大应力以及疲劳寿命,再以质量分数为约束条件,以刚度最大为目标函数,对微型显示器主框架进行了拓扑优化。在质量仅增加1.2 g的情况下,将X,Y,Z三个方向振动的最大应力分别降低了70.3%,68.6%和64.6%,将X向和Y向的振动疲劳寿命提高了3101%和1797%,最终使该型机载微型显示器满足设计要求。As an auxiliary display device and backup display device,the airborne micro display is crucial for the flight safety and mission execution of aircraft.Vibration,as one of the main causes of failure in airborne electronic equipment,should be given special attention in the structural design of airborne micro displays.In this paper,taking the airborne micro display as the research object,the maximum stress and fatigue life of the structure during the vibration process are obtained through random vibration simulation and fatigue analysis.Then topology optimization of the main frame of the micro display is carried out with mass fraction as the constraint and maximum stiffness as the objective function.With a mass gain of 1.2 g,the maximum stress of the main frame vibrating in X,Y and Z directions is reduced by 70.3%,68.6%and 64.6%respectively.The fatigue life of the main frame is increased by 3101%in X direction and 1797%in Y direction.Ultimately the airborne micro display meets the design requirements.

关 键 词：机载微型显示器 随机振动 拓扑优化 

分 类 号：V243[航空宇航科学与技术—飞行器设计]