基于有限元法的飞机着陆灯结构动态特性分析

Dynamic Characteristics Analysis of Aircraft Landing Light Structure Based on Finite El-ement Method

飞机在飞行的加减速阶段以及受到气流扰动时都会产生较大的振动,这对飞机着陆灯的结构无疑是巨大挑战,同时随着飞机设计向轻量化方向发展,采用碳纤维复合材料代替铝合金材料已成趋势。本文以一种典型飞机着陆灯为研究对象,通过有限元仿真分析对比铝合金材料和碳纤维复合材料的固有频率、振动等动态特性参数。从模态分析和振动分析的结果可知,基于碳纤维复合材料的着陆灯结构的动态特性优于传统铝合金材料。

During the acceleration and deceleration phase of the flight, and in the airflow disturbance, the aircraft will generate large vibrations, which is a huge challenge for the structure of the aircraft landing light. At the same time, with the development of the aircraft design in the direction of lightweight, the use of carbon fiber composites instead of aluminum alloys has been a major trend. In this paper, a typical aircraft landing light is taken as the research object, and by finite element simulation method, the landing light dynamic structure parameters, such as natural frequency and vibration, are compared using aluminum alloy material and carbon fiber composite material respectively. The results of modal analysis and vibration analysis show that the dynamic charac-teristics of the landing light structure based on carbon fiber composites are superior to the tradi-tional aluminum alloy materials.