火炮动力后坐试验台建模及射击模拟准确度评估

摘要

Muzzle strong impact is a feasible test method of a gun-power-recoil to simulate gun firing.In order to evaluate firing simulation accuracy of a gun-power-recoil test table,a certain type of self-propelled gun was studied,and the virtual prototype model of the gun-power-recoil test table was built by using the software ADAMS/ATV.Based on the virtual prototype model,recoil displacement,recoil velocity,and recoil acceleration simulation curves under the condition of muzzle strong impact were obtained.Through solving relative errors of distance between curves respectively,combined with the landmark method,an evaluation method was presented with two evaluating indexes including shape similarity and numerical value similarity.Through calculation,it was shown that the firing simulation accuracy of the test table is 0.8654.The evaluation results indicated that the test table can simulate the dynamic characteristics of a gun-power-recoil correctly during gun firing.%针对火炮动力后坐试验台模拟实弹射击准确度问题，基于ADAMS/ATV软件，以某型自行火炮为对象，建立火炮动力后坐试验台虚拟样机模型；在此基础上获得炮口强冲击条件下火炮后坐位移、速度及加速度仿真曲线；分别求解曲线间距相对误差，结合界标分界法提出基于曲线形状相似度及数值相似度两指标的射击模拟准确度评估方法。通过计算获得试验台模拟准确度为0．8654。评估结果表明，该试验台能较准确模拟火炮实弹射击的后坐动态特性。