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International Journal of Automotive Technology > Volume 19(5); 2018 > Article
International Journal of Automotive Technology 2018;19(5): 845-852.
doi: https://doi.org/10.1007/s12239-018-0081-5
FEATURE-BASED CAD SYSTEM BUILDUP FOR PASSENGER AIRBAG DESIGN
Hansae Cho1, Sunghoon Yang1, Jonghyun Yim3, Seungki Kim3, Soo-Won Chae1
1Korea University
3GM Korea Company
ABSTRACT
The passenger airbag (PAB) requires a large volume and fast deployment because of the large distance between the dashboard and the passenger. And various shapes and sizes of the PAB are required depending on the type of vehicle. However, since the PAB modeling process for each design change is complicated and time consuming, the design parameters of the PAB could not be well investigated. In this study, a unique feature-based CAD system has been proposed that easily constructs PAB CAD model and then generates PAB FE model for collision analysis. Main keypoints and widths of PAB that determine the shape and size have been extracted by analyzing the geometric-feature of airbag. The PAB CAD model can be easily constructed by inputting keypoints and widths information. Then, from the constructed PAB CAD model, the PAB FE model is automatically generated. Finally, the generated PAB FE model can be directly employed for collision analysis, thereby reducing the modeling time of the PAB and enabling efficient parametric studies on design.
Key Words: Passenger airbag, Feature-based modeling, CAD, Finite element analysis, Parametric study
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