针对焊接边不同位置对双帽梁吸能特性的影响问题,通过改变焊接边的相对位置,并与传统焊接边双帽梁进行对比分析,在有限元仿真分析的基础上,结合落锤试验对双帽梁的吸能特性进行研究。结果表明,焊接边的位置对双帽梁吸能效率和变形有一定的影响,焊接边越靠近薄壁梁边缘,吸能率越低,但变形效果越好。 Aiming at the problem of the energy absorption characteristics of double-cap beams with different welding positions, by changing the relative position of welding edges and comparing with the traditional welding double-cap beams, based on the finite element simulation analysis, Double cap beam energy absorption characteristics of the study. The results show that the welding edge position has some influence on the energy absorption efficiency and deformation of the double-cap beam. The closer the welding edge is to the edge of the thin-walled beam, the lower the energy absorption rate is, but the better the deformation effect is.