Study of Truck Rear Bumper Crashworthiness

When passenger cars crash into the rear end of heavy trucks, the degree of cars occupants' injury and cars damages depends on weather the crashworthiness of the truck rear bumpers are good or not.The dynamic three dimensional non linear finite element methods are adopted to simulate the impact of truck rear bumper for the investigation of its crashworthiness.And some impact tests are carried out.Based on this, tubes' system is installed on the impact surface of the bumper horizontal beam as an energy absorption device to improve the beam's impact performace. Simulation and test results of the improved bumper show that this device leads the deceleration of the moving barrier crashing into the bumper decreased obviously.