System identification techniques are used to generate a lumped spring-mass model of the EuroSID-2 (ES-2) dummy. Sled tests which subject the ES-2 dummy to a variety of loading conditions are used for model building and validation purposes. The model is used to conduct parametric studies to characterize the influence of impact velocity, pelvis offset, padding thickness and padding force deformation behaviour on the dummy response. For constant velocity impacts at 8 m/s, results indicate that the peak acceleration response of the rib, spine, pelvis and TTI as well as peak rib compression are reduced considerably by energy absorbing padding. In the environment evaluated, optimum response for a 75 mm thick pad is observed at a padding strength of 0.15 MPa. Impacting the pelvis region prior to the thoracic region can produce a reduction in peak rib compression. For the covering abstract see ITRD E825082.
Samenvatting