Dynamics Analysis of Vehicle Rollover Test Based on SAE J2114

Abstract

SAE J2114 test method has simulated the recurrence of passenger vehicle rollover form in the traffic accident, mainly including the rollover stage and tumbling stage. In this paper, the whole rolling process of passenger vehicle are analyzed in mechanical model by the testing method, such as the critical condition of rolling ; the condition affecting the vehicle back weeks on the air parabolic motion stage; the condition affecting rolling strength on the landing stage. Furthermore, the article has used MATLAB tools to analyze the relationship of four factors ,which are the critical speed, wheel base, center of gravity height and radius of the rolling ,and the results will help us better understand the collision shape, providing theoretical basis for accident reappearance.