基于ABAQUS的火炮试验装置后坐动态特性研究

通过高速质量块撞击炮口来推动火炮后坐是一种技术可行的火炮后坐模拟试验方法。为保证该模拟试验方法具有与实弹射击相似的后坐动态特性,基于ABAQUS软件建立了火炮模拟试验装置模型;通过对橡胶试样进行拉伸、压缩试验,得到橡胶材料的应力应变关系曲线,然后对其进行了材料评估;通过对小型橡胶波形发生器进行压缩试验,选取Ogden(N=1)模型作为试验装置中波形发生器对应的超弹性本构模型;对火炮试验装置的后坐动态特性进行了仿真研究,仿真结果与实弹射击的试验结果相吻合,验证了橡胶波形发生器的效果及该模拟试验方法的准确性。

Research on the Recoil Dynamic Characteristic of Gun Tester Based on ABAQUS

High-speed mass impacts the muzzle to propel gun recoil,which is a feasible method to simulate the firing process.To make sure that the testing method has similar dynamic characteristic with practical firing,set up gun simulative tester model and mechanics model based on ABAQUS.Get the stress-strain relationship of rubber through the tensile and compressive tests of sample,then evaluate the stress-strain curve.Select Ogden(N=1) model as hyperelastic model of the waveform generator on the gun tester through compressive test of small rubber waveform generator.Carry simulation study on the recoil dynamic characteristic of gun tester,and simulation results inosculate the testing result perfectly,which validate the effects of waveform generator and the simulative testing method.