Simulation Analysis and Experimental Research on Side Crash Safety of a Car

Safety, energy conservation, environmental protection, the three main themes of today's society for Automotive Research. With the substantial increase in car ownership, car collisions high incidence of significant increase in the number of casualties of the crew, the passive safety of the car more and more automobile manufacturing companies and the concerns of consumers. Accounted for 30% of traffic accidents, side impact crash safety has become an important topic of passive safety research. In this paper, the unit where exports development and improvement in the actual project, the departure from a car to meet the specific requirements of the U.S. side impact regulations, a comparative analysis of side impact regulations with the U.S. side impact regulations, to find the similarities and differences between the two, determined to meet the U.S. side impact regulations to improve the direction. Then put forward the body side crash safety programs, and conduct a feasibility analysis. A 3D CAD model of the car, model simplification and finite element discretization further establish the finite element analysis model of the vehicle and mobile deformable barrier. PAM-CRASH software in accordance with the requirements of the U.S. regulations FMVSS 214 side impact simulation analysis, the collision deformation in the form, and dummy injury index value and related deformation curve analysis and evaluation of passive safety requirements stipulated by the regulations of the United States. The results show that the two indicators of the dummy head injury HIC value and pelvis acceleration does not meet the U.S. side impact regulations FMVSS 214 requirements, needs to be done to further improve the design. Then, for less than the original car simulation results show, to improve the design of key components of the side impact structure, vehicle model and improved side impact simulation analysis and evaluation results show that the improved body structure in side impact door process, the post little deformation, rear body rigidity greatly improved. From dummy HIC injury indicators, the pelvis acceleration curve, the post with the center line of the driver's seat from the meet U.S. regulations FMVSS 214 requirements, improve satisfactory results. Finally, the kind of car improved the real vehicle side crash test, and the test results were analyzed and compared with the simulation results before and after the improvement, the results show that the test results and improved vehicle side impact simulation results coincide, thus verify that the vehicle side impact the effectiveness of the finite element model established in this paper. Passive safety index of the real vehicle side impact test results meet U.S. regulations FMVSS 214 requirements, to achieve the goal of this study.