【摘要】 研究提出刚性弹侵彻幂次应变硬化介质全过程的弹体轴向阻力理论表达式，并进行影响因素分析。利用圆柱形空腔膨胀理论，结合锥形弹和卵形弹的弹头形状方程，推导得到了2种刚性弹体侵彻半无限厚度幂次应变硬化介质和有限厚度靶板时弹体轴向阻力及弹速变化方程，给出弹体贯穿有限厚度靶板的临界速度和弹体余速计算公式并与试验数据对比，验证了理论公式的合理性。分析表明，在弹体尺寸相同情况下，卵形弹轴向阻力整体大于相同弹头长度的锥形弹；在弹体总长不变的情况下，卵形弹弹头曲径比建议取3～6。更多还原

【Abstract】 This study proposes a theoretical expression for the axial resistance throughout the entire process of pe-netration of rigid projectiles into power-law strain hardening media and conducts an analysis of influencing factors. By employing the theory of cylindrical cavity expansion and incorporating the head shape equations of conical and ogival projectiles, expressions for axial resistance and velocity variation of rigid projectiles penetrating semi-infinite thickness power-law strain hardening media and finite thickness target plates are derived. The critical velocity for projectile perforation of finite thickness target plates and formulas for residual velocity are provided, and the rationa-lity of the theoretical formulas is validated by comparison with experimental data. The analysis indicates that, for projectiles of the same size, ogival projectiles exhibit overall greater axial resistance compared to conical projectiles of the same head length; when the total length of the projectile remains constant, it is suggested that the ogive caliber radius head should be in the range of 3 to 6.更多还原