Analysis And Research Of Vehicle Rollover Simulation Based On ADAMS

With the rapid development of the automobile industry,car ownership is increasing year by year.At the same time,bring convenience to people has brought great pressure to the road traffic safety.Especially the vehicle rollover accidents,with serious casualties and high mortality.Therefore,study the stability of the car under the condition of high speed turning,to prevent rollover accidents,improve road safety and protect life and property safety is of great significance.This topic based on theory of vehicle rollover.Application of ADAMS/Car module to establish the dynamic model of vehicle rollover.Based on ADAMS simulation principle,analyze the influence factors of the rollover.Through to the influence of external conditions(driving speed,curve radius and the road adhesion coefficient)are simulated,analysis of the trend of each factor influence on vehicle rollover and validates of the trend of rollover model.At the same time,under the condition of multiple factors,the critical value of vehicle rollover are analyzed.By changing the structure parameters of the car body,affecting the vehicle rollover car body structure(suspension,tires,wheel tread,wheel base and the height of the center of mass)are simulated,Analyzed the impact and important degree of various factors on the trend of vehicle rollover.Using the orthogonal experiment method,Taking the maximum tire lateral load transfer rate(LTRMax)as a rollover risk evaluation index.Relationship between primary and secondary on the vehicle rollover four important factors(height of the center of mass,velocity and the curve radius and the road adhesion coefficient)and the optimal combination was discussed.Draw bend radius and speed are the largest on the impact of vehicle rollover,height of mass center are secondly,attachment coefficient is the minimal impact.When the adhesion coefficient is small,it is the main factor of car sideslip,and serious side to trip over a rollover.Only when the adhesion coefficient is so large,the car will produce a rollover directly.Through draw the rollover impact factors and evaluation index trend chart,Make the change of rollover factors of vehicle rollover more intuitive.