An investigation of side impact test methodologies for child restraint systems using finite element simulations

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Monclus-Gonzalez, Jesus¹; Marzougui, Dhafer²; Bahouth, George²; Eskandarian, Azim²

An investigation of side impact test methodologies for child restraint systems using finite element simulations

Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV)

Affiliations

¹Royal Automobile Club of Spain, Spain

²FHWA/NHTSA National Crash Analysis Center, United States
Abstract

A Finite Element (FE) model of a convertible forward-facing Child Restraint System (CRS), presented in a 2001 ESV paper has been combined with a Hybrid III 3-year-old dummy model and an ECE44R test bench model. The combination will replicate the last ISO proposal for side impact tests of CRS in order to analyze the influence of the longitudinal acceleration pulse seen during FMVSS 214 tests. This influence is shown to be limited, as long as the dummy is confined within the CRS shell. In agreement with previous crash investigations, the simulated intruding door in the ISO proposal is responsible for a large share of the loads acting on the child dummy. The validation of the virtual model and limitations of the child dummy FE model are discussed. Simulation results are compared with an actual frontal test using the same CRS model.
Links

URL: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv18/CD/Files/18ESV-000121.pdf

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