MESO-SCALE MODELLING OF SHOCK WAVE PROPAGATION IN A CELLULAR GLASS PARTICLE REINFORCED THERMOPLASTIC COMPOSITE
MESO-SCALE MODELLING OF SHOCK WAVE PROPAGATION IN A CELLULAR GLASS PARTICLE REINFORCED THERMOPLASTIC COMPOSITE
复制标题
多孔玻璃颗粒增强热塑性复合材料中冲击波传播的细观建模
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
O. Awoyemi
中科院分区：
文献类型：
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作者：
K. Brown;R. Brooks;O. Awoyemi
人们对开发新型多孔颗粒复合材料的兴趣越来越大，用于国防和汽车工业中的减震和高能量吸收应用[1]。然而，这样的材料具有高度不均匀的微观结构，并且它们在动态载荷下的行为是复杂的。本研究的目的是开发一个全面的多尺度建模方法，准确地代表和模拟真实的微观结构，形态和行为的一种新的蜂窝状颗粒增强热塑性复合材料在冲击载荷下。生成材料微观结构的二维（2D）介观尺度统计体积元（SVE）模型。使用LSDYNA显式有限元代码进行数值模拟。研究了体积分数、颗粒排列方式和颗粒断裂对材料力学响应和冲击波衰减的影响。
There is increasing interest in developing novel cellular particulate composite materials for shock mitigation and high energy absorbing applications in the defense and automotive industries [1]. However, such materials have high heterogeneous microstructures and their behavior under dynamic loading is complex. The aim of this study is to develop a comprehensive multi-scale modeling approach that accurately represents and simulates the real microstructure, morphology and behaviour of a new cellular particle reinforced thermoplastic composite under shock loading. A two-dimensional (2D) meso-scale statistical volume element (SVE) model of the material microstructure is generated. Numerical simulations are performed using the LSDYNA explicit finite element code. The influence of volume fraction (vf), particle arrangement, and particle fracture on the mechanical response and shock wave attenuation of the material is investigated.