反冲模拟试验系统动力学分析

发布时间：2018-04-11 08:55

本文选题：模拟试验 + 数值仿真　；参考：《中北大学》2017年硕士论文

【摘要】：反冲模拟试验系统最初应用在火炮缓冲器研究上,相较实弹发射,模拟试验系统只需要很小装药量,就可以实现与实弹发射近似的动态效果,在自动武器的研制中有着广泛的应用。模拟试验技术不仅可以模拟火炮射击时的动态力,还可以模拟出类似的强冲击力,例如冲压设备工作时的强振动、飞机着陆时起落架所承受的强冲击等。随着试验系统的技术要求日渐提高,以往的模拟试验系统无法满足现实应用,结构急需改进。本文在前人研究的基础上,分析试验系统工作原理及运动过程,引入新的方案,设计一套新型模拟试验系统,以满足现实应用中的新要求。根据技术要求中的各项指标,在以往的结构基础上进行改进,设计出一套新的方案。试验系统在运行时能够实现一系列复杂动作来保证各项技术指标。依照结构方案完成模拟试验系统的三维建模,分别阐述各部件的结构特点,并从模拟试验中的动力加载过程、部件运动过程两部分详细说明系统如何实现工作要求,然后对系统的整体运行过程进行数学建模,再将数学模型编制成计算机程序导入数值分析软件MATLAB中,利用其强大的计算能力进行数值仿真。将仿真试验计算分为理想工况、单周期试验、多周期试验三组进行,得到的三组仿真结果数据相互对比研究用以评估试验系统的结构设计是否合理有效。仿真数据对比研究表明,各项结果数据误差均在合理范围内,建立的试验系统动力学模型可靠,试验系统结构设计方案可行,对其他缓冲器的模拟试验具有一定的借鉴意义。
[Abstract]:The recoil simulation test system was initially applied to the study of gun buffers. Compared with the firing of live ammunition, the simulation test system requires only a very small charge, and can achieve a dynamic effect similar to that of live ammunition firing.In the development of automatic weapons has a wide range of applications.The simulation test technique can not only simulate the dynamic force of the artillery fire, but also simulate the similar strong impact force, such as the strong vibration of the punching equipment and the strong impact of the landing gear during the landing of the aircraft, etc.With the increasing technical requirements of the test system, the previous simulation test system can not meet the practical application, and the structure needs to be improved.On the basis of previous studies, this paper analyzes the working principle and motion process of the test system, introduces a new scheme and designs a new simulation test system to meet the new requirements in practical applications.According to the indexes of technical requirements, a new scheme is designed based on the previous structure.The test system can realize a series of complex actions to ensure each technical index.According to the structural scheme, the three-dimensional modeling of the simulation test system is completed, and the structural characteristics of each component are expounded, and the dynamic loading process and the motion process of the components in the simulation test are described in detail to explain how the system realizes the working requirements.Then the whole running process of the system is modeled and then the mathematical model is programmed into the numerical analysis software MATLAB and its powerful computing power is used to carry out the numerical simulation.The simulation test was divided into three groups: ideal working condition, single cycle test and multi-period test. The three groups of simulation results were compared to evaluate whether the structural design of the test system was reasonable and effective.The comparative study of simulation data shows that the error of each result data is within a reasonable range, the dynamic model of the test system is reliable and the design scheme of the test system structure is feasible, which has certain reference significance for the simulation test of other buffers.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：N941.3

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