改进型手性周期结构覆盖层的抗冲击性能研究  

Shock-resistant performance of cover layer on a new chiral periodic structure

作　　者：任宪奔 赵鹏铎[2] 李晓彬[1] 张磊[2] 李营[1,2] 

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]海军装备研究院,北京100161

出　　处：《振动与冲击》2017年第15期142-145,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金(11302259)

摘　　要：针对一种改进型手性周期结构覆盖层进行分离式霍普金森压杆(SHPB)试验,并通过SHPB试验及数值仿真研究其抗冲击性能,分析其能量吸收性能及变形特征。得到以下结论:在冲击作用下改进型手性周期结构的芯体由于自身惯性效应在结构中作受迫振动;改进型手性周期结构覆盖层具有良好的抗冲击性能,覆盖层及嵌入芯体可通过自身变形和运动来吸收冲击能量;可以利用有限元软件ABAQUS模拟SHPB试验来评估不同手性周期结构的抗冲击性能,通过数值仿真可以对结构尺寸与材料参数进行优化,得到抗冲击性能更好的手性周期结构。Tests with split Hopkinson pressure bar( SHPB) were conducted for cover layer on a new chiral periodic structure. Through tests and numerical simulation,the cover layer's shock-resistant performance was studied,its energy absorption performance and deformation features were analyzed. It was shown that the core of the new chiral periodic structure is forced to vibrate in the structure due to its own inertia effect under the action of shock; the cover layer on the new chiral periodic structure has a good shock-resistant performance,the cover layer and the embedded core can absorb the shock energy through their own deformations and movements; the finite element software ABAQUS can be used to simulate SHPB tests and evaluate shock-resistant performances of various chiral periodic structures; structural sizes and material parameters are optimized through numerical simulation to get chiral periodic structures with better shock-resistant performances.

关 键 词：改进型手性周期结构 抗冲击性能 SHPB 

分 类 号：TH113[机械工程—机械设计及理论]