从抗撞性角度观察车辆设计,薄壁构件具有良好的吸能性能,为了深入探讨车辆吸能元件抗撞的性能,应用LS-DYNA对不同正多边形截面薄壁管进行计算机数值模拟,旨在获得工程抗撞设计中对某些抗撞部位具有借鉴性的吸能元件。采用斐波那契(Fibonacci)搜索对正多边形截面薄壁管吸能最大对应的最佳边数的搜索求解,得在正多边形截面薄壁管冲击压缩相同长度时,正十一边形截面薄壁管的吸能最大。
Thin-walled tube,a main energy absorption component,is widely used in collision design of different vehicles,LS-DYNA is applied to simulate the impact of regular polygon thin-walled tube with different cross-section,and then the Fibonacci search is carried out to obtain a maximum solution of energy absorption about the thin-walled tube.It is investigated that regular hendecagon section is the best solution to absorb the most energy under the same compression quantity.Therefore,thin-walled tube with regular ...