RESEARCH ON THE COLLISION ENERGY ABSORPTION CHARACTERISTICS OF THE ENERGY-ABSORBING BOX FRONT ANTICOLLISION BEAM SYSTEM

Abstract

The front anti-collision beam system is an important component to improve the safety of the whole vehicle.Among them,the structural parameters of the energy-absorbing box and the beam directly affect the crash resistance of the vehicle body.In order to obtain the optimization scheme of the energy-absorbing box-type front anti-collision beam system,firstly,from the three perspectives of crushing form,initial peak force and specific energy absorption,the impact of the cross-section structure of the energy-absorbing box on the crash-worthiness performance was studied.Then,the impact of the cross-section structure of the beam on the crash-worthiness performance was studied from the two dimensions of bending strength and energy absorption value.Finally,the crash-worthiness performance of the optimized energy-absorbing box-type front anti-collision beam system in the case of frontal collision and partial collision was studied.The results show that,the regular hexagonal section has a good energy absorption effect;the tripple channel beam has high flexural strength and good energy absorption effect;the new energy-absorbing box-type front anti-collision beam system compared to traditional systems,in the case of frontal collision and partial collision,the energy absorption values increase respectively by 11.5% and 31.6%,and the intrusion amount decreases respectively by 53.2% and 16.1%.The support for the research on the safety performance of the optimized anti-collision beam system is provided.