MODELING AND STRESS ANALYSIS OF HUMAN HEAD IN FRONTAL IMPACT WITH A DEFORMABLE BODY, USING FEM METHOD

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RAJAEI S.M.; BAKHTIARI N.A.; MANSOUR BAGHAEI SH.

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Journal: INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN) Year:2008 | Volume:19 | Issue:3 Page(s): 79-85

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Title

MODELING AND STRESS ANALYSIS OF HUMAN HEAD IN FRONTAL IMPACT WITH A DEFORMABLE BODY, USING FEM METHOD

Author(s)

RAJAEI S.M. | BAKHTIARI N.A. | MANSOUR BAGHAEI SH. | Issue Writer Certificate

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Abstract

Head injuries resulting from motor vehicle crashes are a leading cause of death. Injuries to head are directly related to impactor behavior, so deformable bodies can significantly reduce the severity of head injury during impact. Nowadays the soft materials named deformable materials are widely applied in industry for the sake of their energy absorbing potential, that’s why foaming materials such as polymeric and metal foams are extensively used in automobile industries to satisfy occupant protection and comfort.This study demonstrates the association between generated stresses on head and the barriers behavior. It investigates the effect of materials for their impact absorbing qualities and their behavior under impact by using LS-DYNA finite element codes. It focuses on the investigation of suitable materials for the car interior structure by analyzing their impact absorbing properties. This biomechanical study was performed by applying a visco-elastic head model for the 50th percentile male which collides with a constant velocity of 6.5 m/sec (15mph) to a barrier at the sagittal plane in the situation of frontal impact. Aluminum, ABS, Alulight, Alporas and Expanded PolyPropylene (EPP31) which are used in car industry have been selected to perform the analysis. Results shows that the maximum stress, maximum strain and peak head deceleration are directly related to material density, yielding strength and elasticity. Alporas foam with the lowest yielding strength exerts minimum stress (2.3Mpa), strain (0.000134) and also minimum peak deceleration (299g) to head while Aluminum with the maximal yield strength and density provides the highest values (60times based on stress). According to related safety standards, the exerted values due to Alporas are in a safe range and point out the energy absorbing capability of Alporas in contrast to other selected materials while Alulight, EPP31 and ABS are in the next ratings, respectively.

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APA: Copy

RAJAEI, S.M., BAKHTIARI, N.A., & MANSOUR BAGHAEI, SH.. (2008). MODELING AND STRESS ANALYSIS OF HUMAN HEAD IN FRONTAL IMPACT WITH A DEFORMABLE BODY, USING FEM METHOD. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), 19(3), 79-85. SID. https://sid.ir/paper/65525/en

Vancouver: Copy

RAJAEI S.M., BAKHTIARI N.A., MANSOUR BAGHAEI SH.. MODELING AND STRESS ANALYSIS OF HUMAN HEAD IN FRONTAL IMPACT WITH A DEFORMABLE BODY, USING FEM METHOD. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)[Internet]. 2008;19(3):79-85. Available from: https://sid.ir/paper/65525/en

IEEE: Copy

S.M. RAJAEI, N.A. BAKHTIARI, and SH. MANSOUR BAGHAEI, “MODELING AND STRESS ANALYSIS OF HUMAN HEAD IN FRONTAL IMPACT WITH A DEFORMABLE BODY, USING FEM METHOD,” INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), vol. 19, no. 3, pp. 79–85, 2008, [Online]. Available: https://sid.ir/paper/65525/en

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