Soft Tissue Injury Risk in Chest and Abdomen of 3YO child Based on CRS Dynamic Load

摘要

The chest and abdomen soft tissue injury risk to three-year old (3YO) child occupant in a child restraint system (CRS) was investigated by using finite element (FE) simulation, based on the UN R129 dynamic test regulation. In which, Q3 dummy FE models and THUMS 3YO Occupant Model Academic Version 4 (THUMS 3YO) and two types of CRSs (impact shield and five-point harness) were used. The chest physical injury parameters, and the chest soft inner organs parameters were compared in two types of CRSs. The simulation result shows that significant difference of chest deformation observed in Q3 and THUMS 3YO. The stress and strain distribution of chest and abdomen visceral organs of THUMS 3YO in the two CRSs were larger than the injury threshold. Moreover, in the impact shield CRS, the distribution of the stress-strain and absolute value was larger, to predict a higher chest injury risk.