变截面薄壁构件斜向碰撞性能分析

摘要

In this paper, through numerical simulation and calculation with the finite element software LS-DYNA, the colli-sion response of cone thin-walled members and quadrate-tapered thin-walled members under different oblique impact are ob-tained, and then the deformation pattern, energy absorption characteristics and the maximum impact of these two different thin-walled members are compared.The calculation results show that the crashworthiness of cone thin-walled member is better than that of quadrate-tapered one under the oblique impact.%采用有限元软件LS－DYNA进行数值模拟计算，得到圆锥形和方锥形薄壁构件在不同倾斜载荷角冲击下的碰撞响应，并对两种薄壁构件变形模式、吸能特性和最大峰值冲击载荷进行了比较。数值计算结果表明，圆锥形薄壁构件在斜向冲击下的抗撞性能优于方锥形薄壁构件。