Numerical Simulation And Process Optimization On Drawing Process Of Anti-collision Beam Of The Automobile Front Bumper

The bumper is a safety device to absorb and reduce the impact force of the outside world. The bumper in the front of the car is the first contact part in collision accident. It can reduce the harm to the pedestrian and damage to the vehicle car in high speed impact.So it is important to research and examine drawing process for front bumper to improve the automotive passive safety.Anticollision beam is the most important part of automobile front bumper. It has high requirements in precision,peripheral dimension.Due to its complex structure and larger drawing depth,the wrinkles,cracks and other defects are easy to occur in the foming process.So it is difficult to control the forming proeess and hard to form the part.In the text,effects of many factors on sheet metal forming quality are analyzed such as variable blank holder force,die parameters,material properties etc. The conclusion is that blank holding force is the most significant and adjustable factor in the effect on the forming quality. So in this paper, the effect of blank holding force on the forming quality is the object of study.By using the finite element simulation,this paper completed numerical simulation on drawing process of anti-collision beam of the automobile front bumper under the constant blank holder force condition and the VBHF loading modes. By comparing the simulation results,U loading mode is regarded as the best option for the anti-collision beam.Finally,the text optimize the U loading mode on artificial intelligence. The overall forming quality is better.