某导引头电子模块力学特性分析

Mechanical Characteristics Analysis for Electronic Module of a Seeker

小型化、精密化、功能集成化是当今导引头结构设计的三大发展趋势,在丰富了设计思路的同时也对导引头的环境适应性提出了更为严苛的要求,对导引头电子模块进行力学分析可以校核验证弹载加速、冲击、随机振动环境下结构的可靠性。文中基于有限元分析的方法对某导引头电子模块进行加速度、模态分析、正弦及随机振动和冲击分析,提取结构对于不同载荷的力学响应,通过变形、加速度响应和应力云图分析数据,验证结构的刚强度,并对结构改进提出针对性意见。仿真结果表明,该电子模块在较严苛的环境条件下满足结构刚强度要求,设计安全可靠。最后进行环境条件最为苛刻的冲击试验,通过试验结果与仿真结果的对比,证明有限元分析的精确性和有效性。

Miniaturization,precision,multi-functionalization are the three trends of the structure design in the area of the seeker. The changes not only enrich the design methods but also have much more stringent requirements for the environment adaptation of the structure. Mechanical analysis can check and ensure the reliability of the structure under extreme circumstances like acceleration,strike and random vibration. Based on finite element analysis,the acceleration,modal analysis,sine and random vibration and impact of a seeker electronic module are analyzed in this paper. Extracting the mechanical response of the structure to different loads,the data through deformation,acceleration response and stress cloud map are analyzed,the strength is verified and more specific suggestions are given according to the results of the structure analysis. The results of the finite element analysis show that the structure can work perfectly under a series of stringent circumstances. At last,shock tests are carried out in order to compare the simulation values with the experiment results. The comparison verifies the accuracy and effectiveness of finite element analysis.