Aiming at the biomechanical characteristics of upper leg impactor in the pedestrian protection collision test

THUMS(total human model for safety) model and upper leg impactor were compared and simulated. Firstly

the THUMS-SUV pedestrian accident is simulated

and the impact force and bending moment of THUMS model of upper leg were output. According to the initial condition and minimum energy status of pedestrian upper leg in the accident

two upper leg impactor collision models were established and simulated. The kinematic behavior

maximum bending moment and maximum impact force between THUMS upper leg and upper leg impactor were compared and analyzed. The result showed that the upper leg impactor had higher impact force

but lower bending moment compared to THUMS model. This paper indicates that

due to movement and contact of lower leg and upper body

the contact force and bending moment of upper leg is affected

which means the biofidelity improvement is needed for the upper leg impactor.