Constrained Path Optimization in G0 + Group Children Restraint System Based on UN R129

The Q1 dummy FE model was used to analyze different restraint paths of a G0+ group of CRS based on UN R129 rear facing sled test method. Four difference seatbelt restraint paths of the rear facing CRS were analyzed and the displacement of the CRS and physical injury parameters of Q1 dummy were compared. The results showed that the head maximum displacement of Q1 dummy was reduced by 35.05 mm and chest resultant acceleration was reduced by optimizing the constraint path of the backward restraint system. This paper provides a reference for design and development on G0+ group of child restraint system in the future.