【摘要】 目的 研究C60射钉入射Q235靶板时入射参数对侵彻性能的影响规律。方法 首先，通过试验标定C60射钉材料的JC本构模型参数。其次，建立C60射钉侵彻Q235靶板的仿真模型，并通过侵彻深度试验验证仿真模型的可靠性。最后，利用仿真模型仿真C60射钉侵彻Q235靶板过程，研究入射参数对侵彻性能的影响规律。结果 随着入射角度的增加，侵彻深度降低，当入射角度增大到600时射钉会出现跳飞的现象。钉靶距离在0～5mm内时，随着钉靶距离增加，侵彻深度增加明显，钉靶距离大于15 mm后，触靶速度增幅随钉靶距离增大而明显减小，侵彻深度趋于稳定。当驱动载荷达到320 MPa时，C60射钉可以有效击穿14mm厚Q235靶板。结论 得到了入射参数对C60射钉侵彻Q235靶板性能的影响规律，对提高射钉使用性能和优化射钉器的枪体结构具有重要意义。更多还原

【Abstract】 The work aims to investigate the effect of impact parameters on the penetration performance of C60 nails penetrating Q235 target plates. Firstly, the Johnson-Cook constitutive model parameters for C60 nail material were experimentally determined. Secondly, a simulation model for the penetration of the C60 nail into the Q235 target plate was established, and the reliability of the simulation model was verified through penetration depth experiments. Finally,the penetration process was simulated with this model to study the effects of impact parameters. As the impact angle increased, the penetration depth decreased. When the impact angle reached 600, the nail exhibited a skip phenomenon. In the range of 0-5 mm for the nail-plate distance, the penetration depth increased significantly as the distance grew.However, when the nail-plate distance exceeded 15 mm, the growth rate of impact velocity markedly decreased with further distance increments, and the penetration depth stabilized. When the driving load reached 320 MPa, the C60 nail could effectively penetrate a 14 mm thick Q235 target plate. The effect of impact parameters on the perforation performance of C60 nails into the Q235 target plate has been obtained, which is of great significance for improving the use performance of nails and further optimizing the structural design of the nail gun body.更多还原