Finite Element Analysis And Research Of Side Impact Performance Of A Minibus Door

With the rising of automobile possession in our country, the traffic accident is becoming a big social problem. So the research is focus on the automotive passive safety. In July 2006, the regulation of side impact has carried out, which will promote the research of side impact.Strength of side door is specified in the side impact regulation. In addition, as the main part of car body, the car door has important effect on side impact safety. To get the experience of side impact simulation and find new ways of automobile side impact, the car door is separated from car body in the simulation of side impact.Based on nonlinear finite element theory, through the simulation of the test by using LS-DYNA and the research of influencing factors on simulation, a modeling way of nonlinear finite element analysis is acquired. After that, some questions of modeling on nonlinear finite element and the selecting of controlling factors during the simulation. In the end, according to the door of a mini-passenger car, using finite element preprocessor software-HYPERMESH, a finite element model of the car door is built. On the basis of the model, the structural performance of car door is analyzed, and the car side impact performance on different area is simulated according to concerned regulations. The changes of anti-collision performance, which included the energy absorption about every part of the car door, door deformation, and collision force, acceleration of cylindrical collision and acceleration of door cancroids during the process of collision, are detailed analyzed. The studies of this paper provide experience to the simulation of vehicle side impact.