Technical Paper
Child Dummies Restrained by an ISOFIX CRS and a Universal CRS in Different Crash Pulses and the Effect of a Crash Pulse on Dummy Accelerations
2012-04-16
2012-01-0085
A 5-point harness type of child seat approved by ECE R44 was studied in this paper. This child seat can be installed either by the ISOFIX anchorages (the ISOFIX CRS) or by a vehicle 3-point seatbelt (the universal CRS). Hybrid III 3-year-old (3YO) dummy restrained by the ISOFIX CRS was used in a vehicle buck sled test. TNO P-series 3-year-old (P3) dummy restrained by the universal CRS was used in a frontal 50kph full rigid barrier (FRB) test. Multi-body models of the two CRSs were developed by using Madymo software and correlated with the two tests. The goals of this study are to compare the performance of the ISOFIX CRS and the universal CRS, to understand the discrepancy of the kinematics of the Hybrid III 3YO and P3 in the multi-body model simulations, and to find the influence factor of a pulse on the dummy responses. Five different crash pulses were used in the Madymo simulations for both the ISOFIX CRS and the universal CRS.
