To study the safety of drivers with different sitting positions in intelligent vehicle collision, the slide model of SUV was established and the precision of the model was verified by slide test. The simulation model of driver's attitude was established by THUMS. According to the results of post mortem human surrogate (PMHS), the sitting postures of THUMS at different seat backrest angles were adjusted and the drivers’ injuries of three sitting postures in frontal collision were analyzed. Simulation results show that when the driver was in semi-recumbent and reclining posture, the protective effect of the airbag on the head was obviously reduced in collisions, and the head and chest will be seriously damaged due to the large seat backrest angle, resulting in increased distance between the head and the wheel. Besides, the tilting sitting posture leads to the risk of sunken seat in the collision. Therefore, with the development of autonomous driving technology, not only should intelligent vehicles meet occupants’ comfort requirements, but the collision safety caused by the change of sitting postures should be considered.
In order to verify the fatigue-durability performance of chassis components, the simulation and analysis process is established in this paper based on CDTire model. High-accuracy tire model is constructed by CDTire modeling software according to the tire test data. The multi-body dynamics simulation is completed by combining the CDTire model with the vehicle model. The load of chassis components is extracted and imported into fatigue software. The swing arm is taken as an example for calculation. This analysis process can guide the analysis of chassis components and shorten the development cycle.
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