三维编织复合材料动态冲击性能的数值模拟  

Numerical simulation of dynamic performance of three-dimensional braided composites

作　　者：练军[1] 顾伯洪[2] 

机构地区：[1]生态纺织教育部重点实验室(江南大学),江苏无锡214122 [2]东华大学纺织学院,上海201620

出　　处：《纺织学报》2011年第1期41-45,50,共6页Journal of Textile Research

基　　金：生态纺织教育部重点实验室(江南大学)开放课题资助项目(KLET605)

摘　　要：介绍弹体冲击三维编织复合材料显式算法的原理、方法以及求解步骤,建立三维编织复合材料编织物增强体和树脂二相结构的三维模型,并考虑了纤维和树脂材料本构关系的非线性以及弹体和纤维、树脂接触的非线性。通过模拟计算得到弹体的剩余速度和实际测试速度基本相一致的结论,进而得到三维编织复合材料的吸能机制及弹体在三维编织复合材料中的偏移和所受接触力的变化情况。同时模拟出侵彻过程中弹靶的破坏特征,从而为设计轻型防护材料提供参考。The paper discussed the simulation of the impact on three-dimensional braided composites in terms of the principle, method and steps of solution of the related explicit formulation. Geometric model of three-dimensional braided fabric and resin was built, taking into consideration the nonlinear relationship between fiber and resin and between project, fiber, and resin. The residual velocity of the project obtained by simulative computation is basically in agreement with actual speed got by testing. Accordingly, energy absorbing mechanism of 3-D braided composites was gained, along with displacement of projectile and contact force. Destructive feature of the target when hit by the project was simulated, and it offered reference for the design of protective material against light impact.

关 键 词：三维编织复合材料 弹道冲击 非线性 显式算法 

分 类 号：TS131.9[轻工技术与工程—纺织材料与纺织品设计]