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Study on Remodel Design of Child Safety Seat Based on Simulating Collision

Author: HuXiaoQiang
Tutor: ChenChiKun；WangFengHong
School: South China University of Technology
Course: Mechanical Design and Theory
Keywords: Child safety seats Crash Simulation Retrofit design
CLC: U463.836
Type: Master's thesis
Year: 2011
Downloads: 130
Quote: 1
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Abstract

With a year-to-year increase in the number of child occupant, child occupant restraint has become an important issue of automotive safety research. As traffic accidents in the most vulnerable groups, children the occupant need special protection measures. Studies have shown that the proper use of child safety seats can effectively protect the safety of the child occupant. Abroad for the study of child safety seats carried out earlier. In China, for research and development of the child safety seat in its early stages. As the child safety seat is directly related to the life of the child occupant safety, so the higher requirements for child safety seats. Most of the domestic manufacturers and R \u0026 D test to rely on the support of foreign manufacturers. The method in accordance with the design of the traditional industrial products, product development takes a long design cycle, may require repeated mold, test, design cost and design risk. This article is based on computer simulation of collision retrofit design of existing foreign products. First through reverse engineering methods in Imageware UG software platform to create a 3D CAD model of the sample of child safety seats. Then used the MADYMO software to build the model of child safety seats, child dummy model, child restraints model crash simulation model. The simulation analysis of child safety seats parameters to change the dynamic response of the child dummy. The research results show that the coefficient of friction between the children leave and child safety seat increase, child restraints stiffness reduction is conducive to the protection of children's dummies; children seat belt shoulder strap position slightly above the the children dummies shoulder when the protective effect Best; increasing rigidity of the child safety seat is conducive to the child occupant protection, but when the stiffness increases to a certain extent, the changes in the stiffness of the child dummy response was not obvious; child safety seats and car seat The coefficient of friction between the increase is conducive to the protection of children's dummies, but the impact of the effect is not obvious. In the original sample of child safety seats on the basis of a modified design of the structure and appearance. Modification of the structure into the design of the seat cushion can lift, so that not only can expand adaptation of the seat cushion can also rise to leave a space designed drawers for storage. Exterior remodeling design is design more accessible child safety seat shape design against the display the monotonous appearance of child safety seats on the market and, according to the animal peculiar intimacy. Simulate collisions on the modification of the rear seat of the security analysis, the results showed that the modified design to meet the requirements.

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