This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Improvement and Validation of the Lower Limb and the Pelvis for a Pedestrian Dummy
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2015 by SAE International in United States
Annotation ability available
The evaluation of pedestrian safety performance of vehicles required by regulations and new car assessment programs (NCAPs) have been conducted. However, the behavior of a pedestrian in an actual car-pedestrian accident is complex. In order to investigate injuries to the pedestrian lower body, the biofidelity of the lower limb and the pelvis of a pedestrian dummy called the POLAR II had been improved in past studies to develop a prototype of the next generation dummy called the POLAR III. The biofidelity of the thigh and the leg of the POLAR III prototype has been evaluated by means of 3-point bending. However, the inertial properties of these parts still needed to be adjusted to match those of a human. The biofidelity of the pelvis of the POLAR III prototype has been evaluated in lateral compression. Although the experiment using PMHSs (Post Mortem Human Subjects) was conducted in dynamic condition, the dummy tests were performed only in quasi-static condition. Therefore, this study aimed to improve and further validate the lower limb and the pelvis of the pedestrian dummy to enhance assessment capabilities of injuries to these body regions. The femur and tibia solid shafts of the POLAR III prototype were modified to improve durability of the instrumentation. The modified thigh and leg of the POLAR III prototype consist of double-layered plastics shaft covered by the flesh. These parts were subjected to latero-medial 3-point bending. The isolated pelvis of the POLAR III prototype was subjected to dynamic lateral compression. The force-deflection curves of the modified leg, thigh and pelvis of the POLAR III prototype (except for iliac reaction force of pubic loading) were compared with those of the PMHS test results from a past study, and the biofidelity of these components was evaluated using the parameter proposed by a past study.
CitationAsanuma, H. and Takahashi, Y., "Improvement and Validation of the Lower Limb and the Pelvis for a Pedestrian Dummy," SAE Technical Paper 2015-01-1471, 2015, https://doi.org/10.4271/2015-01-1471.
- Institute for Traffic Accident Research and Data Analysis 2011 Traffic Accident Statistics
- Akiyama , A. , Okamoto , M. , Rangarajan , N. Development and application of the new pedestrian dummy 17 th ESV Conference 2001
- Bose , D. , Subit , D. , Ivarsson , J. , Crandall J. et al. Biofidelity Improvements to the Polar-II Pedestrian Dummy Lower Extremity SAE Technical Paper 2007-01-0757 2007
- Okamoto , M. , Akiyama , A. , and Takahashi , Y. Pedestrian Dummy Pelvis Impact Responses SAE Technical Paper 2009-01-1214 2009 10.4271/2009-01-1214
- Ivarsson , J. , Lessley , D. , Kerrigan , J. , Bhalla , K. et al. Dynamic Response Corridors and Injury Thresholds of the Pedestrian Lower Extremities IRCOBI Conference 2004
- Takahashi , Y. , Okamoto , M. , Kikuchi , Y., M. , Akiyama , A. Development of Injury Criteria and Measurement Procedure for the Thigh and Leg of a Pedestrian Dummy JSAE Autum Congress Proceedings, Paper Number 20085693 2008
- Salzar , R. , Genoverse , R. , Bass C. , Bolton J. et al. Load path distribution within the pelvic structure under lateral loading The International Conference of Crashworthiness (ICRASH) Kyoto Japan Paper number 2008-085 2008
- SAE International Surface Vehicle Recommended Practice Performance Specifications for a 50 th Percentile Male Pedestrian Dummy SAE Standard J2782 Nov. 2007
- Ikeda , M. , Suzuki , S. , Gunji , Y. , Takahashi , Y. et al. Development of An Advanced Finite Element Model for a Pedestrian Pelvis 22 nd ESV Conference, Paper Number 11-0009 2011
- Rhule , H.H. , Maltese , M.R. , Donnelly , B.R. , Eppinger , R.H. et al. Development of a new biofidelity ranking system for anthropomorphic test devices Stapp Car Crash Journal 46 477 512 2002