Objective biofidelity rating of a numerical human occupant model in frontal to lateral impact

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de Lange, Ronald¹; van Rooij, Lex¹; Mooi, Herman¹; Wismans, Jac¹

Objective biofidelity rating of a numerical human occupant model in frontal to lateral impact

Stapp Car Crash J. 2005;49:457-479

Affiliations

¹TNO Science and Industry, Business Unit Automotive
Abstract and keywords

Both hardware crash dummies and mathematical human models have been developed largely using the same biomechanical data. For both, biofidelity is a main requirement. Since numerical modeling is not bound to hardware crash dummy design constraints, it allows more detailed modeling of the human and offering biofidelity for multiple directions. In this study the multi-directional biofidelity of the MADYMO human occupant model is assessed, to potentially protect occupants under various impact conditions.

To evaluate the model’s biofidelity, generally accepted requirements were used for frontal and lateral impact: tests proposed by EEVC and NHTSA and tests specified by ISO TR9790, respectively. A subset of the specified experiments was simulated with the human model. For lateral impact, the results were objectively rated according to the ISO protocol. Since no rating protocol was available for frontal impact, the ISO rating scheme for lateral was used for frontal, as far as possible.

As a result, two scores show the overall model biofidelity for frontal and lateral impact, while individual ratings provide insight in the quality on body segment level. The results were compared with the results published for the THOR and WorldSID dummies, showing that the mathematical model exhibits a high level of multi-directional biofidelity. In addition, the performance of the human model in the NBDL 11G oblique test indicates a valid behavior of the model in intermediate directions as well.

A new aspect of this study is the objective assessment of the multi-directional biofidelity of the mathematical human model according to accepted requirements.

Although hardware dummies may always be used in regulations, it is expected that virtual testing with human models will serve in extrapolating outside the hardware test environment. This study was a first step towards simulating a wider range of impact conditions, such as angled impact and rollover.

Keywords: Human modeling; Biofidelity; Performance; Objective rating
Links

PubMed: 17096285

SAE: 2005-22-0020

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2011	Bose D, Crandall JR, McGwin G, Goldman J, Foster J, Fine PR. Computational methodology to predict injury risk for motor vehicle crash victims: a framework for improving Advanced Automatic Crash Notification systems. Transport Res Pt C-Emerg Technol. December 2011;19(6):1048-1059.
2008	Bose D, Crandall JR. Influence of active muscle contribution on the injury response of restrained car occupants. In: 52nd Annual Proceedings, Association for the Advancement of Automotive Medicine (AAAM). October 6-8, 2008; San Diego, CA.61-71.
2007	Rodarius C, van Rooij L, de Lange R. Scalability of human models. In: Proceedings of the 20th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 18-21, 2007; Lyon, France.
2009	Fraga F, van Rooij L, Happee R, Wismans J, Symeonidis I, Peldschus S. Development of a motorcycle rider model with focus on head and neck biofidelity, recurring to line element muscle models and feedback control. In: Proceedings of the 21st International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 15-18, 2009; Stuttgart, Germany.
2011	Bastien C, Blundell M, Van Der Made R, Neal-Sturgess C. Investigation of pre-braking on unbelted occupant position and injuries using an active human body model (AHBM). In: Proceedings of the 22nd International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 13-16, 2011; Washington, DC.
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2013	van Rooij L, Pauwelussen J, Op den Camp O, Janssen R. Driver head displacement during (automatic) vehicle braking tests with varying levels of distraction. In: Proceedings of the 23rd International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 27-30, 2013; Seoul, South Korea.
2008	Bose D, Crandall J, Untaroiu C, Maslen E. Influence of pre-impact occupant properties on the injury response during frontal collisions. In: Proceedings of the 2008 International IRCOBI Conference on the Biomechanics of Impact. September 17-19, 2008; Bern, Switzerland.135-147.
2009	Hallman J, Yoganandan N, Pintar F. Side airbag out-of-position deployments: thoracic injury to stationary and dynamic occupants. In: Proceedings of the 2009 International IRCOBI Conference on the Biomechanics of Impact. September 9-11, 2009; York, UK.129-140.
2011	van Rooij L, Uittenbogaard J. Human surrogate neck response to +Gz vertical impact. In: Proceedings of the 2011 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2011; Krakow, Poland.86-89.
2012	Meijer R, van Hassel E, Broos J, Elrofai H, van Rooij L, van Hooijdonk P. Development of a multi‐body human model that predicts active and passive human behaviour. In: Proceedings of the 2012 International IRCOBI Conference on the Biomechanics of Injury. September 12-14, 2012; Dublin, Ireland.622-636.
2016	Giordano C, Kleiven S. Development of a 3‐year‐old child FE head model, continuously scalable from 1.5‐ to 6‐ year‐old. In: Proceedings of the 2016 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2016; Malaga, Spain.288-302.
2007	Cappon H, Mordaka J, Van Rooij L, Adamec J, Praxl N, Muggenthaler H. A computational human model with stabilizing spine: a step towards active safety. In: Proceedings of the SAE World Congress & Exhibition. April 16-19, 2007; Detroit, MI. Warrendale, PA: Society of Automotive Engineers. SAE 2007-01-1171.
2006	Kimpara H, Nakahira Y, Iwamoto M, Miki K, Ichihara K, Kawano S-i, Taguchi T. Investigation of anteroposterior head-neck responses during severe frontal impacts using a brain-spinal cord complex FE model. Stapp Car Crash J. 2006;50:509-544. SAE 2006-22-0019.
2010	Bose D, Crandall JR, Untaroiu CD, Maslen EH. Influence of pre-collision occupant parameters on injury outcome in a frontal collision. Accid Anal Prev. July 2010;42(4):1398-1407.
2011	Douglas C, Fildes B, Gibson T. Modeling occupants in far-side impacts. Traffic Inj Prev. 2011;12(5):508-517.
2010	Hallman JJ. Detrimental Thoracoabdominal Interaction With Lateral Airbag Restraints [PhD thesis]. Marquette University; December 2010.
2008	Bose D. Numerical Estimation of Occupant State Parameters in a Dynamic Loading Environment [PhD thesis]. Charlottesville, VA: University of Virginia; August 2008.
2009	Parent DP. Scaling and Optimization of Thoracic Impact Response in Pediatric Subjects [Master's thesis]. Charlottesville, VA: University of Virginia; 2009.
2009	Campbell BM. A Numerical Side Impact Model to Investigate Thoracic Injury in Lateral Impact Scenarios [Master's thesis]. University of Waterloo; 2009.
2008	Troxel TB. Biomechanical Analysis of Thoracolumbar Spine Fractures in Indianapolis-Type Racing Car Drivers During Frontal Impacts [PhD thesis]. Detroit, MI: Wayne State University; May 2008.