Title: Head injury of CHARM-70 FE model and a comparative study with Hybrid III and GHBMC model

Authors: Hequan Wu; Xiaoyan Qian; Qifan Ren; Xuehui Zhan

Addresses: Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha, Hunan 410004, China; Wayne State University, Detroit, Michigan 48201, USA ' Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha, Hunan 410004, China ' Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha, Hunan 410004, China ' School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha, Hunan 410004, China

Abstract: In this paper, the Hybrid III FE head model is validated through dummy impact experiments firstly. Then, the CHARM-70 head model is developed, and the structure, head injury and dynamic mechanical response of the model are studied. Subsequently, the GHBMC head model is introduced to compare the dynamic mechanical response of the forehead to the steering wheel edge under the same speed with the Hybrid III and the CHARM-70. The result demonstrates that the CHARM-70 model has high biological fidelity. Meanwhile, due to different material properties, GHBMC model shows the best stiffness and force response, followed by CHARM-70 model, and finally Hybrid III model. Finally, the different setting of material parameters indicates a fine response to the decline rule of bone strength caused by human age, which is meaningful for the development of different age, body and other special population models in the future.

Keywords: CHARM-70; Hybrid III; GHBMC; injury mechanism; biological fidelity; material parameters.

DOI: 10.1504/IJVS.2020.111530

International Journal of Vehicle Safety, 2020 Vol.11 No.4, pp.370 - 389

Received: 15 May 2020
Accepted: 19 Jun 2020

Published online: 24 Nov 2020 *

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