Simulation analysis of frontal collision safety performance for an electric vehicle
LIAO Wei
WANG Jinbo
ZHANG Weihai
DU Tingwei
Abstract：In order to accurately evaluate the safety performance of a passenger car during a frontal collision,a geometric model of the vehicle is established using CATIA software,and the model is preprocessed using ANSA simulation software.LS-DYNA solver is used to for calculation,and HyperView is used for post-processing and data analysis.The deformation of the front crash beam,energy absorbing box,front longitudinal beam assembly,front wall panel and battery pack during the frontal collision test of the vehicle is simulated and analyzed.The results show that the maximum acceleration of the B-pillars on the left and right sides is 67.325g(g is the free fall acceleration)and 62.213g,respectively,both of them meet the standard requirement that the maximum acceleration on both sides should not exceed 72g.The maximum energy absorption point of the energy absorbing box is located at the front end,with a maximum displacement of 465.281 mm,effectively absorbing collision energy.The front longitudinal beam assembly absorbs energy of 21 kJ,accounting for approximately 27％of the total collision energy,and has a good energy absorption effect.The maximum deformation of the front panel is 24.80 mm,which does not invade the passenger compartment and ensures the safety of the driver and passengers.The maximum deformation of the battery pack bracket is 0.17 mm,which is less than the material deformation threshold(0.20 mm)and meets the evaluation requirements.
Keywords：frontal collisionsafety performanceB-pillar accelerationdeformation
Publication Date：2025-05-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 72-77 )