楔形撞头作用下固支矩形板的耐撞性

Crashworthiness of clamped rectangular plates under wedge impact

为了评估刚性楔形撞头作用下固支矩形板的结构耐撞性,本文提出了新的简化理论分析方法,将固支矩形板的塑性变形区域划分为轴对称的4个板块,各个板块的变形均采用抛物曲面的变形模式,推导了楔形撞头与固支矩形板之间撞击力的计算公式,并与试验结果进行对比,数据显示简化理论方法计算结果与试验结果吻合较好。研究表明,提出的简化分析方法能够较好地预报楔形撞头作用下固支矩形板的耐撞性能。

The crashworthiness of clamped rectangular plates under rigid-wedge impact was discussed based on the simplified analysis method in this paper.The plastic deformation of a plate was divided into four axialsymmetry parts,the deformation of which used parabola function.The formula of impact force between the rigid-wedge and the plate was obtained by using the simplified method.The calculation results of the simplified analysis method show good agreement with the experimental records,and that the simplified analysis method can well predict crashworthiness of clamped rectangular plates under wedge impact.