孔结构金属复合夹芯板抗爆炸冲击响应及吸能特性研究

In this paper,dynamic response and energy absorption of clamped perforated metal sandwich plates is studied using the finite element method.The process of dynamic response and deformation modes of perforated metal sandwich plates are obtained.Comparison of dynamic responses between perforated and unperforated sandwich plates is made.Effects of size,space,arrangement of holes and mass distribution of the face sheets on blast resistance of sandwich plates are discussed in detail.It is shown that the shock wave applied on metal foam core through the holes in outer face sheet results in enhanced the core compression and improved energy absorption of sandwich plates.The deflection of sandwich plates with thicknesses ratio of inner face sheet to outer face sheet larger than 1 is less than that of is the plates with thickness ratios of smaller than 1 for the same area density.Optimal blast resistance of perforated sandwich plates is achieved by rationally designing mass distribution of face sheets.