基于SPH方法的纤维材料超高速碰撞模拟  

Simulation of fiber composites under HVI based on SPH

作　　者：赵士操[1,2] 宋振飞[2] 赵晓平[1] 

机构地区：[1]中国工程物理研究院计算机应用研究所,四川绵阳621999 [2]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《爆炸与冲击》2013年第S1期8-15,共8页Explosion and Shock Waves

摘　　要：利用光滑粒子动力学方法(SPH)建立纤维织构几何模型,以纤维束为对象,结合纤维断裂模型和纤维束本构进行纤维材料的超高速碰撞计算,通过电炮实验获取的复合材料自由面速度历史,结合一系列数值计算,进一步修正基体的失效模型。相对于基于平均化的传统模型,这种反映纤维材料织构的计算模型能够描述冲击响应的局域特征。初步开展了复合防护材料宏观尺度的超高速撞击与破坏过程的动力学模拟,利用模拟结果进行防护性能评估。We built the geometry of fiber textures using SPH,and introduced the meso-scale fiber facture model and constitutive model of fiber bundles into the computational model for simulating the HVI process of fiber composites.The test results performed by an electric gun was compared with the simulation results to adjust the matrix fracture model.Compared with the numerical model based on the continuum model,the meso-model can describe the local response of the fibers in the composites. And using this meso-model,we began our first step on the macro-scale simulations of the HVI and fracture process of the composites.The results were used to evaluate the protection performance of the fiber composites.

关 键 词：爆炸力学 超高速撞击 光滑粒子动力学方法 纤维织物 复合材料 

分 类 号：TB30[一般工业技术—材料科学与工程]