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吴普磊 , 李鹏飞 , 董平 , 等 . 攻角对弹体斜侵彻多层混凝土靶弹道偏转影响的数值模拟及试验验证 [J ] . 火炸药学报 , 2018 , 41 ( 2 ): 202 - 207 . DOI: 10.14077/j.issn.1007-7812.2018.02.017 http://doi.org/10.14077/j.issn.1007-7812.2018.02.017 为了减小炸药装药膨胀力对弹体后端盖的力学危害，采用端羟基聚丁二烯（HTPB）为黏结剂、2，4-甲苯二异氰酸酯（TDI）为固化剂、二月桂酸二丁基锡（T-12）为催化剂，成功制备了一种多孔性缓冲材料；采用力学实验机、SEM等测试方法研究了固化温度对HTPB发泡特性和缓冲材料内部结构、压缩率的影响。结果表明，固化温度对HTPB发泡体积影响显著，在30~70℃范围内，随着固化温度的增加，发泡体积从0.12cm³增至0.56 cm³；90℃固化时发泡体积从0.56 cm³减小至0.45 cm³。压缩率在70℃时达到最大值，为65%。根据不同固化温度下缓冲材料的内部结构和压缩率，确定气孔直径均匀，压缩率最大时的温度（70℃）作为缓冲材料的固化温度。

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CHEN W X , ZHANG Y Y , GUO Z K , et al . Penetration of rigid projectile into concrete target with effect of attack angle: theory and experiment [J ] . International Journal of Structural Stability and Dynamics , 2017 , 17 ( 8 ): 1750080 . DOI: 10.1142/S0219455417500808 http://doi.org/10.1142/S0219455417500808 https://www.worldscientific.com/doi/abs/10.1142/S0219455417500808 https://www.worldscientific.com/doi/abs/10.1142/S0219455417500808 The existing prediction methods of penetration depth do not take the influence of attack angle or angular velocity of projectile (i.e. effect of attack angle) into account. The main purpose of this work is to develop an approximate approach to predict the penetration depth for a rigid projectile into concrete target covered with yaw-inducing overlays. A quasi-static, elastic–plastic contact model of projectile impacting on irregular barrier is built based on Hertz’s contact theory, and the expression of effect of attack angle are also presented. The stress on projectile–target interface is derived according to spherical cavity expansion model and mechanical property of target, where reduction coefficient is introduced to consider the effect of free surface, and the penetration resistances are further obtained. Differential equations of motion for projectile arbitrarily oblique into target covered with yaw-inducing overlays are given by employing the initial conditions of projectile striking on irregular barrier. Then a simplified formula of depth-of-penetration (DOP) with effect of attack angle is presented by introducing an influence coefficient of oblique impact and an influence coefficient of yaw-inducing overlays into the depth of normal penetration. Predictions from the simplified formula are validated by comparison with ballistic experimental data for a 57[Formula: see text]mm diameter, 4.44[Formula: see text]kg, and ogive-nose, semi-armor-piercing with striking velocities between 320 and 705[Formula: see text]m/s.

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段卓平 , 李淑睿 , 马兆芳 , 等 . 刚性弹体斜侵彻贯穿混凝土靶的姿态偏转理论模型 [J ] . 爆炸与冲击 , 2019 , 39 ( 6 ): 69 - 76 .

DUAN Z P , LI S R , MA Z F , et al . Analytical model for attitude deflection of rigid projectile during oblique perforation of concrete targets [J ] . Explosion and Shock Waves , 2019 , 39 ( 6 ): 69 - 76 . (in Chinese)

DUAN Z P , LI S R , MA Z F , et al . Attitude deflection of oblique perforation of concrete targets by a rigid projectile [J ] . Defence Technology , 2020 , 16 ( 3 ): 596 - 608 . DOI: 10.1016/j.dt.2019.09.009 http://doi.org/10.1016/j.dt.2019.09.009 A perforation model is developed to predict the attitude deflection in the oblique perforation of concrete targets by a rigid projectile, in which the inertial moment of the projectile is introduced, together with taking the attitude deflection during the shear plugging sub-stage into account, and the shape of the plug formed on the rear surface of target is also re-investigated. Moreover, a new classification of concrete targets is proposed based on the target thickness, with which the attitude deflections in different kinds of concrete targets are analyzed. It is found that the numerical results by using the new perforation model are in good agreement with the previous experimental data and simulated results. Furthermore, the variations of the attitude deflection with the initial conditions (the initial attitude angle and the initial impact velocity) are investigated. © 2019 The Authors

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