Discuss on the assessment method of airbag bottoming-out by the THOR 50 th dummy head in C-NCAP

doi:10.3969/j.issn.1674-8484.2021.02.005

Abstract

Abstract:

Assessments of airbag bottoming-out were discussed to analyz the relationships among the head acceleration, the neck upper force, the cable force, and the facial force of the THOR 50 ^th dummy head in the China New Car Assessment Program (C-NCAP) tests. Two tests were done for simulating bottoming-out of airbag by using pendulum to hit the head through balloon at different velocities. The results show that the coordinate system differences between the head and the neck may be ignored; the rapid increase of the outer force head acceleration is independent of the cable action; facial force is caused by bottoming-out of the airbag when the facial force happen mutates. Therefore, airbag bottoming-out can be preliminarily judged by the head outer force acceleration, which is obtained by calculating the head accelerations, the head mass, and the neck upper force, and then it can be confirmed by analyzing if the facial force curve has any sudden change in the corresponding time.

Key words: automobile engineering, passive safety, airbag bottoming-out, China New Car Assessment Program (C-NCAP), THOR 50 ^th dummy

CLC Number:

U461.91

SHANG Enyi, LI Yueming, XI Bobo, CUI Xinkang, ZHANG Yi. Discuss on the assessment method of airbag bottoming-out by the THOR 50 ^th dummy head in C-NCAP[J]. Journal of Automotive Safety and Energy, 2021, 12(2): 180-185.

Figures/Tables 9

References 12

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