Development of Headform Impactor Finite Element Model Considering the Hyperelastic and Viscoelastic Responses of Rubber

To evaluate and analyze the pedestrian injury risk of automobiles, the finite element models of headform impactors are used. In this study, a modeling method that can accurately estimate the peak of the headform impactor impact pulse and head injury criterion (HIC) was developed. The headform impact...

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Published in:International journal of automotive technology 2018-06, Vol.19 (3), p.523-534
Main Authors: Lee, Choong-Ryung, Jeong, Hyun-Yong
Format: Article
Language:English
Subjects:
Automotive Engineering
Compression tests
Engineering
Finite element method
Head injuries
Impactors
Injury analysis
Mathematical models
Stress relaxation
Stress relaxation tests
Viscoelasticity
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container_title International journal of automotive technology
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description To evaluate and analyze the pedestrian injury risk of automobiles, the finite element models of headform impactors are used. In this study, a modeling method that can accurately estimate the peak of the headform impactor impact pulse and head injury criterion (HIC) was developed. The headform impactor skin has the characteristics of both hyperelasticity and viscoelasticity. Therefore, compression tests, stress relaxation tests, and rheometer tests were conducted, and the hyperelastic and viscoelastic models were developed. The models were combined and used in the finite element analysis. The new headform impactor model was verified to accurately estimate the peak of impact pulse and HIC at the certification test of the headform impactor.
doi_str_mv 10.1007/s12239-018-0050-z
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source ABI/INFORM Global; Springer Nature
subjects Automotive Engineering
Compression tests
Engineering
Finite element method
Head injuries
Impactors
Injury analysis
Mathematical models
Stress relaxation
Stress relaxation tests
Viscoelasticity
title Development of Headform Impactor Finite Element Model Considering the Hyperelastic and Viscoelastic Responses of Rubber
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