为探讨不同参数对层间混杂铺层靶板抗冲击性能的影响规律,通过实验验证数值模拟的可行性和数据的准确性,进而应用LS-DYNA软件展开不同铺层参数、不同冲击速度下,子弹侵彻玻璃纤维单向布和芳纶纤维单向布层间混杂靶板的有限元模拟。结果表明:45°/0°/-45°/90°铺设纤维层的靶板,其能量吸收值和弹道性能指数要高于0°/90°/0°/90°铺层的靶板;以玻璃纤维单向布作为着弹面,芳纶纤维单向布作为背弹面制作的靶板,其防弹效果优于单一纤维层铺设的靶板及其他层间混杂方式的靶板;冲击速度越大,靶板吸能越多,能量吸收率越低。
In order to explore the influence of different parameters on the impact resistance of interlayer hybrid laminated target,the feasibility of numerical simulation and the accuracy of data were verified by experiments.And then the finite element simulation of bullet penetrating glass fiber unidirectional cloth and aramid fiber unidirectional cloth was carried out by using LS-DYNA software under different stacking parameters and different impact velocities.The results shown that the energy absorption value and ballistic performance index of the target plate laid with fiber layer of ±45 ° were higher than those of 0°/90°.And the bulletproof effect of the target plate made of glass fiber unidirectional cloth and aramid fiber unidirectional cloth was better than that of the target plate laid by single fiber layer and other interlayer hybrid modes.And the greater the impact velocity was,the more energy absorption of the target plate was and the lower the energy absorption rate was.
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基金资助
国家自然科学基金(52075280);山东省自然科学基金项目(ZR2019MEE088)
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