Study On Restraint System Matching And Compatibility For Vehicle Frontal Female Occupant

With the development of economy and the needs of people’s material life, more and more consumers pay much attention to the safety performance of a car. Authoritative survey shows that safety performance has become the primary factor to be considered in buying a car. At present, the design of car restraint system is mainly based on male occupant with a big figure, and rarely consider the thin and small female occupant. Now women’s social status are improved in modern life, more and more women will drive car.,so how to better protect female occupants becomes an urgent problem. Meanwhile, adding the situation of female occpupant in front vehicle collision conditions is a more obvious international trend, domestic regulations and C-NCAP will also follow this trend. Therefore, matching and compatibility research of the front female occupant restraint system is very meaningful, and it can be a certain foundation for the domestic relevant security regulations, which may add female dummy in new version.This paper is based on the existing occupant restraint system configuration of a model, by analyzing air bags, seat belts, steering column and other factors, it researched and optimized the matching and compatibility problem of male and female occupant constraint system, who seated on driver seat and co-driver seat. Combined with MADYMO simulation analysis method, it established frontal crash simulation model,verified the vadility of the model by comparing the simulation curve and experimental curve and then calculated the protection effect of the restraint system for front female occupant. With analysis it found out the difference of each part’s damage value and defect so that to optimize each factor, and applied the optimized scheme on the male occupant, at last it found the best program by matching compatible with each other. The results are as following:the existing driver restraint system can satisfy the male and female driver requirements by optimizing the seatbelt force limiter level, airbags pore size, steering column porosity crushing force, etc., it improved the performance of the restraint system;By changing the seatbelt force limiter level, the pore size or balloon volume and other conventional methods, the existing front passenger restraint system can only effectively protect males or female occupant alone, can’t both better protect the male and female occupant at one time, it need to use Dual-stage generator airbag to meet the requirements of the safety performance of male and female occupant,but the cost is greatly improved.