Dynamic material parameters of closed-cell foams under high-velocity impact
作者: Shilong WangYuanyuan DingChangfeng WangZhijun ZhengJilin Yu
作者单位: 1CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, PR China
2Continuous Extrusion Research Center, Dalian Jiaotong University, Dalian, Liaoning 116028, PR China
刊名: International Journal of Impact Engineering, 2017, Vol.99 , pp.111-121
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijimpeng.2016.09.013
关键词: Closed-cell foamFinite element analysisVelocity fieldShock waveDimensional analysis
原始语种摘要: Abstract(#br)Cellular materials under high-velocity impact have highly localized deformation with the cells layer-wise collapse, which is usually characterized by the propagation of shock wave. Researches have shown that the shock wave speed is strongly dependent on the impact velocity, but the effect of the meso-structural and base-material parameters is unclear. In this study, the dynamic material parameters of closed-cell foams are investigated with cell-based finite element models. The one-dimensional velocity distribution along the loading direction is used to capture the propagation of shock front. The shock wave speed is thus determined and it exhibits a linear relationship with impact velocity when the impact velocity is high enough. The difference between the shock wave speed and...
全文获取路径: Elsevier  (合作)
影响因子:1.681 (2012)