论文部分内容阅读
为了提高弹载电子设备的工作性能和可靠性,本文通过正交试验设计与有限元仿真分析相结合的方法,分别从模态分析和随机振动响应分析两个方面探究弹载设备机箱结构设计参数对结构抗振性能的影响,为弹载电子设备抗振性设计提供了基础。结果表明:1)在六个设计参数中,材料弹性模量和印制板连接钉个数是结构固有频率的显著影响因子;长宽比、材料弹性模量和印制板连接钉个数是随机振动加速度响应的显著影响因子;2)对于结构固有频率而言,印制板连接钉个数影响最大,在分析水平范围内,结构固有频率随连接钉个数变化呈递增趋势;对于加速度响应而言,长宽比影响最大;在分析水平范围内,加速度响应随长宽比变化呈递减趋势。
In order to improve the working performance and reliability of the missile-borne electronic equipment, this paper, through the combination of orthogonal experimental design and finite element simulation analysis, explores the design parameters of the chassis structure of the missile-borne equipment from modal analysis and random vibration response analysis The anti-vibration performance of the structure of the anti-vibration design of the electronic equipment provided the basis. The results show that: 1) Among the six design parameters, the material elastic modulus and the number of PCB connection pins are the significant influence factors of the natural frequencies of the structure; the aspect ratio, the material elastic modulus and the number of PCB connection pins are (2) For the natural frequencies of the structure, the number of PCB connection pins has the most influence. Within the analysis level, the natural frequency of the structure shows an increasing trend with the number of connecting pins. For the acceleration response , The aspect ratio has the greatest impact; in the analysis level range, the acceleration response decreases with the aspect ratio.