Research On The Restraint System For Female Drivers Based On 100% Frontal Collision

China’s road traffic situation is complex,car ownership is increasing year by year,the occurrence of automobile traffic accidents is inevitable,so the passive safety performance of automobiles has been paid more and more attention.According to the current research,the domestic research on the active safety of automobiles started late,and the research on female drivers with different sitting postures and small stature is relatively narrow,while the intelligent restraint system has been developed abroad,but this system is not necessarily applicable to female drivers in this state.Because of their smaller physical characteristics,female drivers may raise their seats,lean forward or sit in other states while driving,which makes drivers in abnormal state.Then the protection of female departing drivers will be greatly weakened by the standard restriction system.When the crash waveform is different,that is,when the characteristics of the crash are different,the injuries to the various parts of the passenger’s body are different.Therefore,this paper chooses three different characteristics of the deceleration curves of the real vehicle frontal collision as the research carrier.This paper mainly studies the matching of female driver’s side restraint system and waveform in 100%frontal collision model.Through displacement-time curve and speed-time curve,the deceleration curves of three kinds of real vehicle frontal collision are simplified,and the corresponding simplified double-step waveform is obtained.The simplified two-step waveform was loaded into the frontal impact model,and the solution results of MADYMO software were analyzed.The head injury value HIC,chest T3MS acceleration value,chest compression,left leg force and right leg force were obtained,and the comprehensive injury value WIC of the dummy was calculated.Under three sitting conditions,the dummy’s sitting posture is adjusted to 15degrees forward,15 degrees standard and 15 degrees backward respectively.The sensitivity of the waveform parameters and the parameters of the restraint system are analyzed by using the full factor test method.The influence of the change of the size of a characteristic parameter on the dummy’s injury response and its variation law are obtained.Through the calculation of simulation test,the optimization trend of each parameter value is obtained,which provides the target for the following waveform and some parameters optimization of constraint system.By analyzing the sensitivity of each parameter of simplified double step waveform to occupant injury,it is determined that G₁and G₂are the most important parameters affecting occupant injury in collision waveform.By comparing the damage values of three simplified double step waveforms,the simplified double step waveforms with less damage are selected as the basic waveforms for subsequent optimization research.By optimizing the parameters of the restraint system,it can be concluded that when the inclination angle is 10 degrees,the damage to the occupants is small.Finally,a scheme of combining the waveform curve with the restraint system with the minimum damage value is put forward.The restraint system and waveform are matched with the driver’s side model in different sitting postures,and a set of optimal matching devices are obtained respectively,which can reduce the occupant’s injury in different degrees.