Collaborative Optimization of Vehicle Crashworthiness under Frontal Impacts Based on Displacement Oriented Structure

Xi Liu; Rui Liang; Yuanzhi Hu; Xuebang Tang; Christophe Bastien; Ruibin Zhang

doi:10.1007/s12239-021-0115-2

Collaborative Optimization of Vehicle Crashworthiness under Frontal Impacts Based on Displacement Oriented Structure

Xi Liu, Rui Liang, Yuanzhi Hu, Xuebang Tang, Christophe Bastien, Ruibin Zhang

Centre for Future Transport and Cities

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

299 Downloads (Pure)

Abstract

Frontal impacts are the most frequent crash types and may generate extreme body in white (BIW) deformations. Vehicles are subjected to impact evaluation rating protocols such as 100 % Front Rigid Barrier (FRB) impact, 40 % Offset Deformable Barrier (ODB) impact and 25 % overlap (small overlap) impact. This paper proposes a collaborative optimization process using optimal Latin hypercube design (Opt LHD) and response surface methodology (RSM), to improve the vehicle crashworthiness in the frontal impacts, by considering displacement oriented structure (DOS). Upper and lower engine bay structure were considered herein to increase the lateral vehicle displacement during small overlap impact and decrease the impact force that transferred to the passenger compartment in the frontal impacts. The optimal results indicated that the acceleration of the B-pillar was reduced 0.4g in the FRB impact, the intrusion of the firewall was reduced by 55.13 % in the ODB impact, and the intrusion of passenger compartment during small overlap impact was decreased by an average of 53.88 %, with a maximum percentage of 71.41 % around left toepan, leading to an IIHS rating to acceptable from poor. The proposed crashworthiness design approach is effective in vehicle structure optimization for better frontal impacts performance.

Original language	English
Pages (from-to)	1319-1335
Number of pages	17
Journal	International Journal of Automotive Technology
Volume	22
Issue number	5
Early online date	26 Sept 2021
DOIs	https://doi.org/10.1007/s12239-021-0115-2
Publication status	Published - Oct 2021

Bibliographical note

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.

Funder

This paper is supported by the Improving Project of Basic Scientific Research Ability for Young and Middle-aged College Teachers in Guangxi (Grant No.2019K Y0819) and the Scientific Research Funds of Guilin University of Aerospace Technology (Grant No. XJ20KT15).

Publisher Copyright:
© 2021, KSAE.

Keywords

Collaborative optimization
Displacement oriented structure
Frontal impacts
Lateral translation
Vehicle crashworthiness

ASJC Scopus subject areas

Automotive Engineering

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10.1007/s12239-021-0115-2

Post-PrintAccepted author manuscript, 1.71 MB

Cite this

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title = "Collaborative Optimization of Vehicle Crashworthiness under Frontal Impacts Based on Displacement Oriented Structure",

abstract = "Frontal impacts are the most frequent crash types and may generate extreme body in white (BIW) deformations. Vehicles are subjected to impact evaluation rating protocols such as 100 % Front Rigid Barrier (FRB) impact, 40 % Offset Deformable Barrier (ODB) impact and 25 % overlap (small overlap) impact. This paper proposes a collaborative optimization process using optimal Latin hypercube design (Opt LHD) and response surface methodology (RSM), to improve the vehicle crashworthiness in the frontal impacts, by considering displacement oriented structure (DOS). Upper and lower engine bay structure were considered herein to increase the lateral vehicle displacement during small overlap impact and decrease the impact force that transferred to the passenger compartment in the frontal impacts. The optimal results indicated that the acceleration of the B-pillar was reduced 0.4g in the FRB impact, the intrusion of the firewall was reduced by 55.13 % in the ODB impact, and the intrusion of passenger compartment during small overlap impact was decreased by an average of 53.88 %, with a maximum percentage of 71.41 % around left toepan, leading to an IIHS rating to acceptable from poor. The proposed crashworthiness design approach is effective in vehicle structure optimization for better frontal impacts performance.",

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AU - Bastien, Christophe

AU - Zhang, Ruibin

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Collaborative Optimization of Vehicle Crashworthiness under Frontal Impacts Based on Displacement Oriented Structure

Abstract

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