Optimization of a Passenger Car's Bumper Beam for Crashworthiness

In the frontal 56 km/h 40% offset impact test,the front bumper beam ruptures and the extra impact energy passes to the passenger compartment which make the greater intrusion to the passenger compartment.To solve such problems,an improvement plan of the front bumper beam is given according to the performance of bending-resistance and material.Computation of the front bumper beam was performed with the FE simulation,and then the complete vehicle 56 km/h 40% offset deformable barrier impact test with the improved structures was carried out.As a result,the optimized bumper beam eliminated the cause of bumper beam rupture,and obviously improved its crashworthiness.