Finite element models of adult head, child head, upper leg, and leg pedestrian impactors in LS-DYNA were developed and certified. The upper leg and leg impactor models were developed based on the descriptions in the Working Group 17 (WG17) Report of the European Enhanced Vehicle-Safety Committee (EEVC). The head impactors were developed based on the descriptions in the Working Group 10 (WG10) Report of the EEVC. Simulations of the certification tests described in the WG10 (head impactors) and WG17 (leg impactors) reports were performed. The results of these simulations for the head impactors compared well with the results from actual certification test results and fell within the acceptable range for certification. Results from the upper leg certification test simulation did not compare as well with the actual test results but were still within the acceptable range for certification. Test results for the leg impactor were not available for comparison, but the simulation results of the dynamic certification test fell within the allowable limits for certification. Several additional impact simulations were performed for the adult and child head impactors and compared to tests. The additional tests included a wide range of impact velocities, and were used to calibrate the material behavior in the head impactor models so that the impactor models show similar energy absorbing characteristics when compared to the actual head impactors. For the covering abstract see ITRD E825082.
Samenvatting