层叠型缓冲靶板对弹载测试仪的保护作用研究  

Study on the protective effects of laminated buffering target plate on bomb borne testers

作　　者：高原[1] 马淋涛 王宇[1] 孙传猛[1] 裴东兴[1] 余赟湦 GAO Yuan;MA Lintao;WANG Yu;SUN Chuanmeng;PEI Dongxing;YU Yunsheng(State key Laboratory of Dynamic Measurement Technology,North University of China,Taiyuan 030051,China;East China Institute of photo-electron IC,Bengbu,Bengbu 233042,China)

机构地区：[1]中北大学省部共建动态测试技术国家重点实验室,太原030051 [2]华东光电集成器件研究所,安徽蚌埠233042

出　　处：《兵器装备工程学报》2024年第3期34-41,共8页Journal of Ordnance Equipment Engineering

基　　金：山西省基础研究计划资助项目(202203021212129);山西省基础研究计划面上项目(202203021221106)。

摘　　要：使用空气炮模拟火炮发射时的高过载环境对弹载测试仪进行测试时,弹丸撞击靶板会产生尖峰脉冲对测试仪造成严重的损伤,为提高测试仪的存活性,展开对缓冲靶板层叠方式(不同材质的靶板相互叠加的叠层结构)的研究。通过撞击动力学理论描述弹丸对靶板的压缩和侵彻行为,并结合动量守恒和能量守恒定律计算出靶板参数和传递到靶板上的冲量的关系。使用ANSYS/LS-DYNA建立弹丸正侵彻靶板模型,弹丸速度为200 m/s、质量为5.5 kg,仿真结果表明:3层总厚度450 mm的泡沫铝+泡沫铝+橡胶组合方式能有效消除尖峰脉冲并缩短弹丸对靶板的作用时间,加速度均值约为7 000g,脉宽为2.8 ms。受条件限制,空气炮试验采用弹丸质量为5.5 kg、速度为150 m/s,并将缓冲靶板的单层厚度减小到100 mm,结果表明:在泡沫铝+泡沫铝+橡胶组合方式下,弹丸结构和测试仪功能完好,加速度均值约为27 000g,脉宽为0.55 ms。When the air gun is used to simulate the high overload environment of gun launching to test the missile-borne tester,the projectile hitting the target plate will produce a spike pulse,which will cause serious damage to the tester.In order to improve the viability of the tester,the research on the stacking mode of the buffer target plate(the stacking structure of target plates with different materials superimposed each other)is carried out.The compression and penetration behavior of the projectile on the target is described by the impact dynamics theory,and the relationship between the target parameters and the impulse transmitted to the target is calculated by combining the conservation of momentum and energy laws.ANSYS/LS-DYNA was used to establish the model of projectile penetrating the target plate.The projectile velocity was 200 m/s and the mass was 5.5 kg.The simulation results showed that the combination of three layers of aluminum foam+aluminum foam+rubber with a total thickness of 450 mm could effectively eliminate the peak pulse and shorten the action time of the projectile on the target plate.The average acceleration was about 7000 g and the pulse width was 2.8 ms.Limited by the conditions,the air gun test uses the projectile mass of 5.5 kg,the velocity of 150 m/s,and reduces the single-layer thickness of the buffer target to 100 mm.The results show that under the combination mode of aluminum foam+aluminum foam+rubber,the projectile structure and tester function are intact,the average acceleration is about 27000 g,and the pulse width is 0.55 ms.

关 键 词：空气炮 弹载测试仪 加速度 缓冲靶板 有限元仿真 

分 类 号：TJ399[兵器科学与技术—火炮、自动武器与弹药工程]