Study of the occupant’s kinematics during the frontal impact

摘要: A simplified lumped mass mechanical model dedicated to study the unbelted occupant’s kinematics in automobile’s interior during a frontal impact is presented. The model allows the evaluation of the kinematic parameters of the segments which simulate the human body, which can be used later for evaluating the occupant’s level of injury during the crash event. It was started from the Lagrange’s equations and due to the complexity of the obtained equations, it was created a Matlab programme, based on the numerical method Runge-Kutta of fourth order, which helped us to obtain the results presented in this paperwork. Also a model developed with the Simulink-SimMechanics software (multibody dynamics) is presented and the results obtained by using both methods are compared.