不同肩带力、夹紧锁舌或限力插锁对正面刚性墙碰撞中二排HIII-5F假人响应影响研究

Study on the Effect of Different Shoulder Belt Forces,Dynamic Locking Tongue(DLT)or Buckle Load Limiter(BLL)on the Response of Hybrid III 5F Percentile ATD in Rear Seat During Frontal Rigid-Wall Barrier Test

C-NCAP 2024版FRB工况速度增加至56 km/h后,二排HIII-5F假人得分降低。基于ISO模型和试验数据分析乘员响应过程,明确降低肩带力、采用夹紧锁舌或限力插锁的潜在效果并开展滑台对标与验证。滑台结果表明:降低肩带力时头、颈和胸部受益均很小;夹紧锁舌时胸部受益大而头或颈部无不利影响,限力插锁时头和颈部受益大而胸部未受益,组合低肩带力后胸部受益均明显。碰撞结果表明:夹紧锁舌组合低肩带力得分为94%;限力插锁组合低肩带力得分为87%,头部前移量超限通过HIII-50M假人滑台试验被豁免。

Rear seat’s HIII-5F dummy score drops when the speed reaches 56 km/h in Frontal Rigid-wall Barrier(FRB)Test of C-NCAP 2024.After analyzing occupant response based on ISO model/tests data,potential effect is specified with lower shoulder force(LSF)/DLT/BLL and sled test validation/verification is conducted.Sled result indicates that LSF benefits the head/neck/chest a little.DLT benefits the chest a lot without side effect on the head/neck.BLL benefits the head/neck a lot without benefit for the chest,both with obvious benefit for the chest combined with LSF.Crash result indicates that the score is 94%for DLT+LSF,87%for BLL+LSF and head excursion exceeding is exempted by sled test with HIII-50M.