钨球对碳纤维增强复合材料包覆碳化硼陶瓷侵彻效应  

Penetration Effect of Tungsten Alloy Spherical Projectile on CFRP-coated B_(4)C Ceramics

作　　者：王逸凡 李永鹏 徐豫新[1,3] 刘铁磊 焦晓龙 王若素 WANG Yifan;LI Yongpeng;XU Yuxin;LIU Tielei;JIAO Xiaolong;WANG Ruosu(State Key Laboratory of Explosion Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China;Chongqing Innovation Center of Beijing Institute of Technology,Chongqing 401120,China)

机构地区：[1]北京理工大学爆炸科学与安全防护全国重点实验室,北京100081 [2]北京宇航系统工程研究所,北京100076 [3]北京理工大学重庆创新中心,重庆401120

出　　处：《兵工学报》2024年第8期2487-2496,共10页Acta Armamentarii

基　　金：重庆市自然科学基金项目(cstc2020jcyj-msxmX0722)。

摘　　要：为研究碳纤维增强复合材料(Carbon Fiber Reinforced Composite,CFRP)包覆碳化硼(B_(4)C)陶瓷在钨球侵彻下的破坏机制与防护性能,开展不同弹靶径厚比D/T(D为钨球直径,T为陶瓷厚度)下钨球对CFRP包覆B_(4)C陶瓷板(下文简称靶板)的侵彻试验和数值仿真研究。通过弹道冲击试验,掌握钨球穿靶后的剩余速度以及靶板破坏形貌,分析钨球以不同速度侵彻靶板后B_(4)C陶瓷和CFRP的破坏特征;构建钨球侵彻靶板的数值仿真模型,通过再现试验结果验证模型准确性,对比分析CFRP对钨球侵彻效果的影响;基于仿真模型计算得到的数值仿真数据建立钨球垂直侵彻靶板的剩余速度计算模型,并通过试验数据验证计算模型的精度。研究结果表明:钨球垂直侵彻下,CFRP迎弹面呈圆形破口,背弹面呈十字形破口,背弹面破坏面积大于迎弹面,且随撞击速度和靶板厚度的增加,背弹面破坏面积的变化幅度大于迎弹面;与单一B_(4)C陶瓷板相比,CFRP包覆B_(4)C陶瓷板的抗侵彻性能提高4.8%;所建立的钨球垂直侵彻靶板的剩余速度计算模型计算结果的相对误差绝对值不大于15%。The failure mechanism and protective properties of carbon fiber reinforced composite(CFRP)-coated boron carbide(B_(4)C)ceramic target plates under the penetration of tungsten alloy spherical projectile are investigated,the protective properties of the composite structure under different D/T,where D represents the projectile diameter,and T represents the ceramic thickness,are experimentally studied and numerically simulated.The residual velocity of projectile after penetrating the target and the damage morphology of target plate are obtained through ballistic impact tests,and the failure characteristics of B_(4)C ceramics and CFRP at different penetration speeds are analyzed.The numerical simulation model of tungsten alloy spherical projectile penetrating the target plate is established,and the accuracy of the model is verified by reproducing the experiment results.The influence of CFRP on the penetrating effect of tungsten projectile is compared and analyzed.Based on the numerically simulated results,a residual velocity calculation model of tungsten projectile penetrating the target plate is established,and the accuracy of calculation model is verified by the experimental results.The findings indicate that,under the vertical penetration of projectile into the target plate,the CFRP exhibits a circular fracture on the impact surface and a cross-shaped fracture on the back surface.The damage area of CFRP on the back surface is larger than that on the impact surface.With the increases in penetration speed and target thickness,the change amplitude of the damage area of CFRP on the back surface is larger than that on the impact surface.It is found that the anti-penetration performance of CFRP-coated B_(4)C ceramic target plate is 4.8%higher than that of B_(4)C ceramic target plate.Compared with the experimental results,the absolute value of relative error computed by the proposed calculation model is less than 15%.

关 键 词：钨球 B_(4)C陶瓷 碳纤维增强复合材料 侵彻 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] TJ410