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A Data-Based Model of the Impact Response of the SID
Technical Paper
2000-01-0635
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
A simple spring-mass model of the impact response of the side impact dummy (SID) is established. The spring and mass constants of the model are established through system identification methodology based on data from impact tests. The tests are performed in laboratory with hydraulically driven impactors impacting the chest and pelvis of the SID. The input data to the model consist of measured contact force or impactor velocity time histories, and the output data are accelerations on the rib, spine, and pelvis of the SID. The established model appears to predict the test results with reasonable accuracy.
The main purpose of this study, however, is to use this simple model to carry out parametric studies of the response of the dummy with changing impact parameters, the result of which would be useful in understanding vehicle crash tests using the SID. The parameters studied here include the impactor velocity, padding force-deflection characteristics, padding thickness, and pelvis-chest impact timing offset. The results show that the dummy responses used in the Federal Motor Vehicle Safety Standards 214 (FMVSS214) have strong, and in some cases complex, dependence on these parameters. Furthermore, the results clearly show that the reason for the complexity lies in the fact that these measurements in essence are the transient responses of a spring-mass system.
Authors
Citation
Shi, Y., Wu, J., and Nusholtz, G., "A Data-Based Model of the Impact Response of the SID," SAE Technical Paper 2000-01-0635, 2000, https://doi.org/10.4271/2000-01-0635.Also In
References
- Benedetto, A. M. SAE #94-S6-O-07., in Proceedings of 14th Int. Tech. Conf. on Enhanced Safety of Vehicles
- Bergmann, R. Requirements of Comprehensive Side Protection and Their Effects on Car Development SAE#96-S6-W-16, in Proceedings of 15th Int. Tech. Conf. on Enhanced Safety of Vehicles
- Satake, K. et. al., Analysis of Test Results of Side Collisions Using Actual Vehicles SAE #96-S6-O-02
- Chan, C. et. al., Analysis of NCAP Side Impact Crash Data SAE #98-S11-O-12
- Hultman, R. W. et. al., NHTSA Passenger Car Side Impact Dynamic Test Procedure - Test-to-Test Variability Estimates SAE #91603
- Izumi, K. Computer Analysis for Side Impact Occupant Protection SAE #96-S6-O-08
- Allan-Stubbs, B. The Effect of Changes in Seating Position and Door Velocity Time History on Side Impact Dummy Response SAE # 980911
- King, A. et; al., Protection of Occupants Against Side Impact SAE #S5-O-04
- Neathery R. F. Lobdell, T. E. Mechanical Simulation of Human Thorax Under Impact SAE # 730982
- Trella T. J. Kanianthra, J. N. Application of Derived Characteristics from Dynamic Test Data for Simulation of Car-to-Car Side Impacts Using a Lumped Mass Approach SAE # 851187
- Gandhi, U. N. Application of System Identification in Analysis of Automobile Crash, Ph. D. Thesis, University of Michigan 1993
- Shi Y. Nusholtz, G. S. Data-Based Models for Spine Acceleration Responses of the Side Impact Dummy SAE 99S-96 1999 STAPP Conference.
- Jung, L. MATLAB System Identification Toolbox User's Guide 4 The Mathworks 1995
- Ljung, L. System Identification: Theory for the User 2ndEdition Prentice Hall 1999
- MATLAB Optimization Toolbox User's Guide 1.5, The Mathworks 1996