摘要 为了解不同排列组合形式对蜂窝结构动态压缩性能的影响,将3个菱形蜂窝胞元以新的排列组合形成胞元结构,并以菱形类蜂窝结构为模型,采用显式动力有限元ABAQUS模拟分析了菱形类蜂窝结构的动态压缩性能和吸能特性。此外,研究了菱形类蜂窝结构在不同冲击速度下的变形特性和能量吸收缓冲能力,并在同样条件下将常见的菱形蜂窝结构与菱形类蜂窝结构的变形及吸能特性进行比较。模拟结果表明:低速(v=15 m/s)冲击荷载作用下的菱形类蜂窝胞元先后呈现“X”型、“K”型及“一”型破坏,高速(v=70 m/s)冲击荷载作用下的菱形类蜂窝结构首先从冲击端开始破坏,随着冲击荷载持续施加而呈现“一”型,且随着惯性作用逐步扩展到固定端;随着冲击荷载的增大,类蜂窝结构的缓冲变形和能量吸收能力明显弱于菱形蜂窝结构。 In order to understand the influence of different arrangement and combination forms on the dynamic compression performance of honeycomb structure,three diamond-shaped honeycomb cells were combined and arranged in a new arrangement to form a cell structure.Taking rhombus quasi-honeycomb structure as the model,the explicit dynamic finite element ABAQUS was used to simulate and analyze the dynamic compression performance and energy absorption characteristics of the diamond-like honeycomb structure.Furthermore,the deformation characteristics and energy absorption capacity of rhombus honeycomb-like structure under different impact velocities were studied,and the deformation and energy absorption characteristics of common rhombus honeycomb structure and rhombus honeycomb-like structure were compared under the same conditions.The simulation results showed that:under the low velocity(v=15 m/s)impact load,the rhombus honeycomb-like cell presented X-shaped,K-shaped and I-shaped failure successively.Under the high velocity impact load(v=70 m/s),the failure deformation of rhombus quasi-honeycomb structure first started from the impact end,then presented I-shaped with the continuous impact load,and gradually extended to the fixed end with the inertial action.With the increase of impact load,the cushioning deformation and energy absorption capacity of quasi-honeycomb structure was obviously weaker than that of rhombus honeycomb structure.
机构地区 安徽建筑大学土木工程学院
出处 《湖北理工学院学报》 2021年第2期48-52,共5页 Journal of Hubei Polytechnic University
关键词 类蜂窝结构 菱形蜂窝结构 动态压缩 冲击荷载 quasi-honeycomb structure rhombus honeycomb structure dynamic compression impact load
