汽车前舱储物盒密封圈对行人头部保护的影响研究OA

Head impact is one of the most common types of injury in vehicle-pedestrian collisions.With the widespread adoption of pure electric vehicles,their front compartment layouts have diverged significantly from those of conventional internal combustion engine vehicles.In many electric vehicle models,a storage box with sealing rings is added to the front compartment.Consequently,the influence of these sealing rings on pedestrian head injuries is significant and cannot be ignored.Therefore,a combined method of experimental testing and simulation was adopted to analyze the influence of storage box sealing rings on pedestrian head protection according to the C-IASI.A finite element model was developed using LS-DYNA,and a specific modeling method for the sealing rings was proposed.The accuracy of the finite element model was verified by comparing the simulation results with the experimental data.Based on the validated finite element model,the effects of different sealing ring arrangements on head injury were analyzed.The results indicate that the storage box sealing rings have a substantial influence on head injury values.And for vehicles equipped with front compartment sealing rings,an enlarged sealing ring layout is more beneficial to improving pedestrian head protection performance than a reduced layout.