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A Statistical Approach to Design Trim Pillars for FMVSS Extended Head Impact
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English
Abstract
The passage of FMVSS 201 Extended Rule in November 1993 resulted in the evaluation of a variety of designs and materials for use in the interior trim components such as A and B pillars. Historically these parts had requirements for aesthetics, dimensional stability, and thermal performance. Structural performance with energy absorbing capability to prevent head injury is now a significant addition to these requirements. Visibility concerns limit the amount of packaging space available for implementing countermeasures in this area.
Designing countermeasures by trial and error involves extended development time and significant expenditures. This paper discusses the use of the finite element analysis technique that is being increasingly used to accurately simulate head impact situations. The use of high strain rate material property (true-stress, true-strain curves) data is necessary for dynamic impact simulation analysis. Correlation of the finite element analysis results with actual test data is discussed. Based on this correlation, the paper discusses the use of Design of Experiments (DOE) techniques to optimize the design of the countermeasure. Effects of important design parameters such as material modulus and yield strength, rib spacing, depth and thickness and trim thickness on Head Injury Criteria, HIC(d), maximum acceleration and time interval are discussed.
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Citation
Gandhe, G., Hertema, D., and Rey, T., "A Statistical Approach to Design Trim Pillars for FMVSS Extended Head Impact," SAE Technical Paper 970162, 1997, https://doi.org/10.4271/970162.Also In
References
- Standard No. 201: Head Impact Protection: Final Rule Federal Motor Vehicle Safety Standards National Highway Traffic Safety Administration, Department of Transportation 1995
- Lorenzo, L. Mirdamadi, M. Fennessy-Ketola, K. “ A Methodology for Developing Interior Trim Panels to Comply with the new FMVSS No. 201 Legislation ,” SAE Paper # 960152 February 1996
- Barbat, Saeed, D. Jeong, Hyun-Yong Prasad, Priya “ Finite Element Modeling and Development of the Deformable Featureless Headform and its Application to Vehicle Interior Head Impact Testing ” SAE Paper # 960104 February 1996
- Anderson, V. L. McLean, R. A. “ Design of Experiments, A Realistic Approach” Marcel Dekker, Inc. New York 1974
- Cochran, W. G. Cox, G. M. “ Experimental Design” John Wiley and Sons New York 1957
- Draper, N. R. Smith, H. “ Applied Regression Analysis ” Wiley and Sons, Inc. New York 1966
- SJORS, Ingemar “ Experimental Design for Calibration of Wind Tunnel Balances,” 131 133 IEEE 83CH1954-7 1983