航炮后坐对供弹系统影响的半实物仿真系统设计与动力学仿真分析

发布时间：2018-09-04 12:16

【摘要】：本文以某高射速航炮无链供弹系统为研究对象,设计了模拟后坐运动机构,在供弹系统原理样机的基础上建立了高射速航炮无链供弹半实物仿真系统,以实现在不进行实弹射击的条件下,对模拟后坐下的供弹系统的工作特性进行研究。首先介绍了高速无链供弹半实物仿真系统的组成,建立了系统结构的三维模型。对后坐模拟系统进行了结构设计,计算了后坐模拟系统电机的功率。对闭合弹链的运动特性进行了分析。建立了系统等效动力学模型,对传动系统的传动特性进行了分析,计算了驱动电机的功率。利用多刚体动力学软件建立了高射速航炮无链供弹系统的虚拟样机模型,对无链供弹系统进行了动力学仿真。通过对比有无后坐以及不同射速下的仿真数据,对闭合弹链中的输弹单元运动特性、输弹单元之间的接触力、输弹单元中的炮弹运动特性进行了比较分析,以研究无链供弹系统在有后坐及不同射速下各部件的运动特点。将航炮射击时并且有瞎火弹出现时的仿真后坐位移曲线作为虚拟样机后坐部分的运动函数,经过动力学仿真,对比分析有瞎火弹对供弹系统的影响,验证供弹系统工作的可靠性。最后利用有限元方法对高速无链供弹系统中的关键部件进行了强度和刚度分析,进一步验证了结构的可靠性。
[Abstract]:In this paper, the chain-free projectile feeding system of a high-speed aerial gun is taken as the research object, the simulation mechanism of recoil motion is designed, and the hardware-in-the-loop simulation system of the high-speed aerial gun without chain is established on the basis of the prototype of the principle of the projectile feeding system. In order to realize the research on the working characteristics of the system without firing live ammunition, the system of sitting down after simulation is studied. This paper first introduces the composition of the high speed chain-free projectile semi-physical simulation system and establishes the three-dimensional model of the system structure. The structure of the recoil simulation system is designed and the power of the motor is calculated. The kinematic characteristics of the closed chain are analyzed. The equivalent dynamic model of the system is established, the transmission characteristics of the transmission system are analyzed, and the power of the drive motor is calculated. The virtual prototype model of the chain-free projectile feeding system of high firing speed aerial gun is established by using the multi-rigid body dynamics software. The dynamics simulation of the no-chain projectile feeding system is carried out. By comparing the simulation data with or without recoil and at different firing speeds, the motion characteristics of the unit, the contact force between the elements, and the motion characteristics of the projectile in the closed chain are compared and analyzed. In order to study the kinematic characteristics of the components of a chain-free feeding system with recoil and different firing speeds. The simulation recoil displacement curve is taken as the motion function of the recoil part of the virtual prototype when the gun is fired and there is a blind projectile. After dynamic simulation, the effect of the blind fire bomb on the bomb feeding system is compared and analyzed. Verify the reliability of the system. Finally, the strength and stiffness of the key components of the high-speed chain-free bomb feeding system are analyzed by using the finite element method, which further verifies the reliability of the structure.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V271.4;TJ392

【相似文献】