基于 AUTODYN 的压缩空气弹射内弹道研究

摘要

Based on the compressed air launcher used in the ultra-close defensive system, an interior ballistic numerical model is built up with AUTODYN software to compare and analyze the different results of multiple variables including air resistance, via diameter, ballistic length on the initial velocity.By the analysis of fluid solid interaction simulation result, the relationships between the ammunition velocity and time, displacement and air resistance respectively, as well as that of ammunition acceleration and time are gotten.Finally, with the results of interior ballistic numerical model, the specific values of via diameter, launcher length and air pressure of the launcher are confirmed.%以超近程防御武器系统压缩空气发射装置为背景，利用流固耦合软件AUYTODYN建立了不同空气压力、不同泄流面积、不同内弹道长度下的压缩空气弹射内弹道模型，通过对模型流固耦合数值仿真结果的分析，得到了弹药速度与时间、弹药速度与位移、弹药速度与空气压力、弹药加速度与时间的关系，并在此基础上确定了发射装置所用的压缩气体的体积与压力以及发射管的内弹道长度。