三维正交机织复合材料弹道侵彻数值模拟  

Numerical Simulation of 3D Orthogonal Woven Composite Impacted by a Spherical Bullet

作　　者：余育苗[1] 王肖均[1] 李永池[1] 王志海[1] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230027

出　　处：《计算物理》2009年第6期879-886,共8页Chinese Journal of Computational Physics

基　　金：国家自然科学基金(10572134);国防科技重点实验室基金(51453030205ZK0101)资助项目

摘　　要：利用LS-Dyna有限元软件开展球形弹弹道侵彻Kevlar/乙烯基树脂三维正交机织复合材料的模拟研究,靶板采用含损伤的正交各向异性本构模型和Hashin失效准则,子弹剩余速度的计算值和实验值符合较好,破坏形貌和实验基本一致,并给出侵彻速度时程曲线;结合x方向纤维和面内基体的损伤演化图,分析弹道侵彻过程和材料的破坏模式.We present numerical simulation of Kevlar/Vinyl 3D orthogonal woven composite impacted by a spherical bullet with LS-Dyna software. Orthogonal constitutive equation with damage tensor and Hashin failure criteria are adopted for the Kevlar/Vinyl target. Time history of penetration velocity and loading of bullet show that steady penetration process and residual velocity agree well with experimental data. The damage modes basically reflect experimental results. Penetration process and damage modes are studied in details by analyzing damage evolution along the x fiber and interface matrix. It shows that the simulations are in good agreement with experiments.

关 键 词：弹道 侵彻 三维正交机织 KEVLAR LS-DYNA 模拟 

分 类 号：O347.1[理学—固体力学]