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An Improved Belt Model in CAL3D and Its Application
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English
Abstract
The ‘Harness Model’ in the CAL3D occupant simulation program is improved to incorporate a reference point generation scheme and a new belt slip algorithm. The reference point generation scheme results in more accurate belt geometry and alleviates the need to manually specify the reference points coordinates on the occupant body. The new belt slip algorithm balances the belt force and the friction force at each reference point in a successive fashion. This approach gives satisfactory results and does not have the convergence problem found in the old slip algorithm. These new enhancements were used to developed a model to simulate the Hybrid III dummy response in a barrier test. Good correlation was obtained between the model response and the test results. Parametric studies indicated that the shoulder belt stiffness has a significant effect on the head motion, the abdomen deformation, and the peak shoulder belt force. On the other hand, the lap belt stiffness affects the abdomen deformation, the femur loads, and the peak lap belt force. The knee bolster stiffness affects the pelvis acceleration and the femur loads. The guide loop location affects the head motion and the peak shoulder belt force.
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Citation
Deng, Y., "An Improved Belt Model in CAL3D and Its Application," SAE Technical Paper 900549, 1990, https://doi.org/10.4271/900549.Also In
Vehicle Crashworthiness and Occupant Protection in Frontal Collisions
Number: SP-0807; Published: 1990-02-01
Number: SP-0807; Published: 1990-02-01
References
- Fleck, J. T. Butler, F. E. Validation of the Crash Victim Simulator DOT HS-806 279 282 1981
- Deng, Y.-C. “Analytical Study of the Interaction Between the Seat Belt and a Hybrid III Dummy Sled Tests.” SAE Transactions, Paper No. 880648
- Wang, J. T. Nefske, D. “A New CAL3D Airbag Inflation Model” SAE Transactions, Paper No. 880654
- Butler, F. E. Fleck, J. T. “Advanced Restraint System Modeling” Air Force Report AFAMRL-TR-80-14 May 1980
- Conte, S. D. de Boor, C. Elementary Numerical Analysis - An Algorithmic Approach 3rd McGraw-Hill Book Co. 1980
- Foster, J. K. Kortge, J. O. Wolanin, M. J. “Hybrid III - A Biomechanically-Based Crash Test Dummy” Proceedings of the 21st Stapp Car Crash Conference, SAE Paper No. 770938
- Deng, Y.-C. “Anthropomorphic Dummy Neck Modeling and Injury Considerations” Accident Analysis & Prevention 21 1 85 100 1989
- Rouhana, S. W. Viano, D.C. Jedrzejczak, E. A. McCleary, J. D. “Assessing Submarining and Abdominal Injury Risk in the Hybrid III Family of Dummies” Proceedings of the 33rd Stapp Car Crash Conference Washington, D. C. 1989