仿生蜂窝遮弹层抗侵彻机理及数值模拟  

Numerical simulation of anti-penetration characteristics of an alveolate burster layer

作　　者：石少卿[1,2] 王起帆[1,2] 刘颖芳[1,2] 汪宏涛[1,2] 

机构地区：[1]后勤工程学院,重庆401311 [2]重庆市岩土力学与地质环境保护重点实验室,重庆401311

出　　处：《防护工程》2013年第4期45-49,共5页Protective Engineering

摘　　要：在对贝壳珍珠等自然复合材料进行细观机理分析的基础上，运用仿生学原理，以钢管混凝土作为构件设计了一种新型蜂窝遮弹层。该仿生遮弹层具有施工简便、承载力高等优点。从应力波传播方面分析了遮弹层中钢管混凝土构件的阻弹机理：钢管混凝土短构件由于混凝土受到钢管的约束，射弹在侵彻过程中的摩擦阻力大为增加，从而减少了其侵彻深度。利用ANSYS／LS—DYNA软件对蜂窝遮弹层的抗侵彻性能进行了数值模拟，结果表明：由于钢管的约束作用，远离弹靶接触区域的节点和单元无论是受力还是变形的量值相对于接触区的都比较小；由钢管混凝土构件构筑的蜂窝遮弹层抗侵彻性能明显提高。Based on the microcosmic study of some natural mulriple materials, such as conchs, pearls, and applying the theory of bionics, a new alveolate burster layer is designed, concretefilled steel tubes being the component ele ments. From the angle of the theory of stress wave propagation, the mechanism of strength enhancement is studied, and the causation of the structure blocking the projectile is investigated. At the same time, the ANSYS/LSDYNA finite element software is used to make the numerical calculation analysis of the antipenetration properties of the burster layer, and the effect of steel tube restriction is analyzed. Compared with the antipenetration properties of concrete, the antipenetration properties of the burster layer are improved greatly.

关 键 词：仿生学 蜂窝遮弹层 侵彻 数值模拟 

分 类 号：TU313.3[建筑科学—结构工程]