Restraint System Simulation And Optimization Of The Passenger Side Frontal Impacts

With the rapid development of our country’s economy, growing car ownership,combined with the new models of the speed has also been gradually improve, roadtransportation safety is still very grim. In China, because vehicles are left right, the co-pilotposition on the right side, if the vehicle collision, the driver most will automatically turn thesteering wheel right to call yourself to avoid danger, so the final result is caused by theposition of vice the driver hit to the right, the co-pilot seat occupant was exposed to the mostdangerous environment, therefore, study the characteristics of frontal impact occupant siderestraint system, it is very effective to reduce the potential hidden danger in the process ofvehicles in collision and improve occupant safety index in the collision course.This paper will research a car occupant side restraint system simulation and parameteroptimization, after understanding the research significance and study method of theautomotive passive safety in the frontal crash, automotive occupant restraint system model isestablished, according to ECE R94, FMVSS214, New Car Assessment Program (NCAP) andvehicle frontal crash of the correlative regulations and the basic theory of car crash simulation,Combining MADYMO simulation software, simulation analysis was carried out on the carrestraint system model.First of all, with the test of the crew of the real vehicle data model, an effective lateralrestraint system model will be established, including car body, dummy, seat belts and airbags,and establish the contact between them according to actual situation, in this article willcombine the finite element theory and multi-rigid-body dynamics, it is fully reflected inMADYMO modeling.Secondly, compared with the experimental data of the real vehiclefrontal crash experiment and C-NCAP evaluation index comparison, combining withMADYMO software structure model is established, according to the result of collision andthe real vehicle data, the model will be verified effective.Finally, the insufficient of thesimulation results will be found, then the optimization direction will be determined and theseveral optimization schemes will be made, the model will be modified and be perfected.Through comparing several optimization simulation calculations, and according to theC-NCAP evaluation criterion, the optimal solution will be determined. So the performance ofthe occupant restraint system will be improved, and the ultimate goal of the automotiveoccupant safety research will come true.