Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/49080
Type: | Conference paper |
Title: | Pedestrian impact testing: Modelling the effect of head-form mass and speed |
Author: | Searson, D. Anderson, R. |
Citation: | Proceedings of the 2008 Australasian Road Safety Research, Policing and Education Conference, 9-12 November, 2008: pp.23-32 |
Publisher: | University of Adelaide |
Publisher Place: | CD |
Issue Date: | 2008 |
ISBN: | 1876346566 |
Conference Name: | Australasian Road Safety Research, Policing and Education Conference (2008 : Adelaide, Australia) |
Editor: | Anderson, R. |
Organisation: | Centre for Automotive Safety Research (CASR) |
Statement of Responsibility: | D. Searson and R.W.G. Anderson |
Abstract: | Pedestrian impact testing is used to assess the relative level of protection from a vehicle to a pedestrian in the event of a collision. Testing is conducted as part of new car assessment programs (Euro NCAP, ANCAP), and for compliance with regulations in Europe and Japan. A key component of pedestrian impact testing is the head-form test, in which a dummy head-form is fired into the front of the vehicle in free flight, at specific locations typically on the bonnet or windscreen. The acceleration of the head-form is measured and is used to assess the relative level of protection at that location through calculation of the Head Injury Criterion (HIC). Alternative protocols specify different test head-form masses and speeds. This paper presents a model of the acceleration response of the head-form in any given test condition. Given a test with a known result, the model can be used to estimate the outcome of a test on the same structure using a different head-form mass and/or speed. The model is a non-linear damped Hertz model of contact. Validation data showed that the model estimates the HIC to within 10% of that obtained from test results. Simulation of a series of generic impact scenarios was conducted under the conditions of the Australasian New Car Assessment Program (ANCAP) and the draft Global Technical Regulation (GTR) on pedestrian protection, which stipulates a different head-form mass and speed. The results indicate a large discrepancy exists between performance in an ANCAP test and performance under the GTR, such that a structure that would pass the GTR may be rated very poorly under the ANCAP test. |
Keywords: | Pedestrian Testing Contact Modelling |
Description: | Copyright © 2008 The Authors |
Appears in Collections: | Aurora harvest Centre for Automotive Safety Research conference papers |
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hdl_49080.pdf | 176.49 kB | Adobe PDF | View/Open |
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