摘要
以汽车前端保险杠后的吸能盒为研究对象,结合传统内凹六边形负泊松比结构、双箭头负泊松比结构以及某弧边负泊松比填充结构,对比研究了不同填充结构在高速以及低速碰撞中对汽车前端的防护作用,分析了3种填充结构应用下的吸能盒变形模式、压缩量、吸能量、比吸能以及碰撞力峰值,结果表明:在低速和高速碰撞中,3种填充结构皆呈现出明显的负泊松比变形特性,与其他结构相比,弧边填充结构具有更好的吸能防护效果。
The energy absorption box behind the front bumper of the car was taken as the research object.Combined with the traditional concave hexagonal negative Poisson’s ratio structure,double-arrow negative Poisson’s ratio structure and an arc-side negative Poisson’s ratio filling structure,the effects of different filling structures on front-end protection of vehicles in high-speed and low-speed collisions were compared and studied.The deformation modes,compression amounts,energy absorption,specific energy absorption,and peak impact forces of three types of filling structures under the application of the structure were analyzed.In low speed and high speed collisions,the three filling structures all shows obvious negative Poisson’s ratio deformation characteristics,and the arc-edge filling structure has better energy absorption and protection effect than the other structures.
作者
刘宇
郝琪
田钰楠
毛怡
Liu Yu;Hao Qi;Tian Yunan;Mao Yi(School of Automotive Engineering,Hubei University of Automotive Technology,Shiyan 442002,China)
出处
《湖北汽车工业学院学报》
2020年第2期50-54,共5页
Journal of Hubei University Of Automotive Technology
关键词
吸能盒
内凹六边形负泊松比结构
双箭头负泊松比结构
弧边负泊松比结构
energy absorption box
concave hexagon negative poisson’s ratio structure
double arrow negative Poisson’s ratio structure
arc-side negative Poisson’s ratio structure
