摘要火炮、火箭弹等武器在发射时，由于火药气体的推动，包括引信体在内的整个弹体会受到后坐力作用。它们的后坐过载曲线形状虽然相似，但量值却有很大差异。其中火箭弹、迫击炮弹和无后坐炮弹等武器发射时的后坐力与跌落时的冲击惯性力量值大多相当，有时后坐力甚至远小于惯性力，这就对引信后坐保险机构区别发射环境和跌落环境提出了较高的要求。引信曲折槽后坐保险机构作为一种经典的后坐保险机构，结构简单、体积较小，具有能够区别低发射过载和跌落环境的能力。课题以某火箭弹引信为研究对象，利用动力学方程建立曲折槽机构运动的数学模型、使用MATLAB软件和Adams/View对曲折槽机构运动分别进行数值仿真和运动学仿真，然后通过设计试验测量曲折槽机构在实际跌落过程中的运动特性参数并将之与仿真结果进行对比以检验模型的合理性和可信度，从而为曲折槽机构优化设计提供依据和支持。对仿真结果的进一步分析表明，适当增大惯性筒质量或者增大曲折槽倾角均可减少惯性筒运动的时间，提高发射时后坐保险的解除保险可靠性；但同时仿真结果也表明，惯性筒质量或曲折槽倾角过大均不利于平时勤务处理的安全性。仿真结果与试验结果的对比也证实了模型的可信度。60654

毕业论文关键词  引信  曲折槽  后坐保险机构  数值仿真  运动学仿真 

 毕业设计说明书（论文）外文摘要

Title    The Optimizational Design and Simulation Study  on The Fuze Zigzag Slot Device                                                 

Abstract

Because of the pushing of the powder gases,the whole bullet,including the fuze is affected by the setback force when the artillery,rocket projectiles and other weapons are launching.Although the shape of the curves of their setback force are similar,the values of the coordinate are quite different.The values of setback force of artillery,rocket projectiles and recoilless guns when they are launching are mostly close to the inertial force when they are falling,but sometimes the setback force are even far less than the inertial force,which put forward higher requirements on the fuze setback arming device in distinguishing the difference between launch environment and drop environment.As a classic setback arming device,the fuze zigzag device which has a simple structure, small volume, is able to distinguish the difference between low launching overload and drop environment.This item takes the fuze of a rocket projectile as the object of study, uses the motion equations of zigzag to establish the mathematical model,the software of MATLAB and Adams/View to conduct the numerical simulation and kinematics simulation on the motion of zigzag slot mechanism，then measure the motion parameters in the actual dropping process  of zigzag device by designing a test and compared the test results with the simulation results to verify the rationality and reliability of the model,so as to provide a basis and support for the optimizational design of zigzag slot device. After the further analysis of the results of the simulation, it shows that by increasing the mass of the inertia cylinder or the angle of the zigzag slot properly we can reduce the motion time of inertia cylinder, enhance the reliability of arming the setback insurance device in launching.Also at the same time, the simulation results also show that,the mass of inertia cylinder or the angle zigzag slot is too large is not conducive to the security of usual service processing. And at the same time,the comparison between the result of simulation and that of test verify the reliability of the model.

Keywords  Fuze    Zigzag slot    Setback devices    Numerical simulation   Kinematics simulation