焊接边位置对双帽梁吸能特性的影响研究

Research on energy absorption efficiency of flange location of double-hat beam

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。

For research on the impact of energy absorption efficiency of double-hat beam with different flange location,changing the relative flange location and making comparative analysis with flange of the traditional two-hat beam, and on the basis of finite element simulation analysis the research on energy absorption efficiency of double-hat beam combined with drop test is worked out. The result verifies：flange location has effect on energy absorption and deformation in same parameters, which flange is closer to the edge of the thin-walled beam, thin-walled beam absorbs less energy and deforms better.