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research-article

ROBUST DESIGN OPTIMIZATION FOR CRASHWORTHINESS OF VEHICLE SIDE IMPACT

[+] Author and Article Information
Souvik Chakraborty

Research Scholar Department of Civil Engineering Indian Institute of Technology Roorkee Roorkee - 247667
csouvik41@gmail.com

Tanmoy Chatterjee

Research Scholar Department of Civil Engineering Indian Institute of Technology Roorkee Roorkee - 247667
tanmoydce88@gmail.com

Rajib Chowdhury

Assistant Professor Department of Civil Engineering Indian Institute of Technology Roorkee Roorkee - 247667
rajibfce@iitr.ac.in

Sondipon Adhikari

Professor College of Engineering Swansea University Bay Campus, Fabian Way, Swansea - SA18EN
S.Adhikari@swansea.ac.uk

1Corresponding author.

ASME doi:10.1115/1.4035439 History: Received November 18, 2015; Revised October 18, 2016

Abstract

Optimization for crashworthiness is of vast importance in automobile industry. Recent advancement in computational prowess has enabled researchers and design engineers to address vehicle crashworthiness, resulting in reduction of cost and time for new product development. However, deterministic optimum design often resides at the boundary of failure domain, leaving little or no room for modelling imperfections, parameter uncertainties and/or human error. In this study, a operational model based robust design optimization (RDO) scheme has been developed for designing crashworthiness of vehicle against side impact. Within this framework, differential evolution algorithm (DEA) has been coupled with polynomial correlated function expansion (PCFE). It is argued that the coupled DEA-PCFE is more efficient and accurate, as compared to conventional techniques. For RDO of vehicle against side impact, minimization of the weight and lower rib deflection of the vehicle are considered to be the primary design objectives. Case studies by providing various emphasis on the two objectives have also been performed. For all the cases, DEA-PCFE is found to yield highly accurate results.

Copyright (c) 2016 by ASME
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