Abstract:

 Injury responses were simulated by using total human model for safety (THUMS) model to represent the real injury situation for unconstrained drivers' head and neck in rollover tests. A rollover model for complete vehicles was built by using LS-DYNA finite element (FE) simulation. The simulation results were compared with the rollover test results of an SAE J2114 dolly from the crash test data based on Ford Explorer finite element model. The results show that the risk of skull fractures and cervical fractures was low within the first 1.1 s of the simulation but with an intracranial injury possibility. Therefore, the FE model can generally reflect occupants’ injury trends and crash characteristics of real roll-over accidents. The THUMS model can simulate the dynamic response of occupants and intuitively describe the injured parts of human body, while the Hybrid III 50% male dummies' neck could not reproduce the realistic occupant kinematics in rollover.

Key words: automotive passive safety, rollover test, injury response, THUMS (total human model for safety) model, SAE J2114 dolly test