Analysis of Abnormal Seatbelt Shoulder Force Under the Front Collision Condition

The phenomenon of abnormal seat belt load limit force under front collision conditions was studied. Based on the seat belt restraint system model and FTA, the shoulder force in each stage under front collision conditions was analyzed, with a focus on analyzing various possible factors of abnormal shoulder force during the force limiting stage and FTA model for abnormal shoulder force was established. Based on a specific practical case, analyze the impact of each factor in the FTA model on abnormal shoulder force and eventually form a force limiting correlation table for the root cause. A comprehensive analysis of the abnormal seat belt shoulder force from the constraint system level is summarized, which can quickly and comprehensively identify the root cause for the abnormal shoulder force and has a certain reference significance in the industry.