【作者】 朱兵；

【导师】 郑伟；

【作者基本信息】 国防科学技术大学 ， 航空宇航科学与技术， 2008， 硕士

【摘要】 论文以非线性动力学理论和有限单元方法为基础,以制导炮弹的电子系统为研究对象,建立其有限元数学分析模型;并应用有限元分析软件SAMCEF,采用隐式算法对弹体发射过程的动力学特性进行了仿真计算,得到弹体的冲击瞬态响应加速度、全弹体的等效应力分布,电子系统的印制板的应力—应变等计算结果。对仿真结果分析后,提出电子系统抗冲击结构设计优化方向。另一方面,本文采用落锤冲击塔和火药发射模拟作为冲击发生装置,分别采用不同材料封装的电子系统模拟试验件进行高冲击试验研究,对获得的试验数据进行了分析,验证有限元分析的可信性;从试验结果表明以空心玻璃微珠作为颗粒填充物来提高电子的抗高冲击能力是可行的,是一种有潜力的抗高冲击技术。更多还原

【Abstract】 This article focus on the electron system of Guidance Projectile as studying model, based on the theory of non-linear dynamics and finite element method, building whose finite element method mathematical analysis model; and with finite element program SAMCEF, implicit finite element method of body The process of launching the dynamic characteristics of the simulation, the projectile body has been the shock of transient response acceleration, full-body stress, such as the distribution of electronic components of the system’s stress - strain, and other results. The simulation results of the analysis, put forward the direction of shock design optimization on the structure of the electronic system.On the other hand, this article used the drop hammer shock tower and the gunpowder launch simulation as a launch simulation device, using the different material seal the electronic system simulation test piece to conduct the high shock test research separately, has carried on the analysis to the tentative data, the confirmation finite element analysis credibility; From the test result indicated that enhances electronic by the hollow glass micro bead as the pellet filling material anti-high shock ability is feasible, is one kind of the potential anti-high shock technology.更多还原