Rollover accidents have become more and more of an important issue for vehicle safety nowadays. On the basis of the final rule of Federal Motor Vehicle Safety Standard No. 216 (FMVSS 216), design optimisation of vehicle upper structures is performed to improve roof strength. Surrogate-based design optimisation is utilised to facilitate design space exploration and optimum search rapidly, in which the response of roof crush resistance force is approximated by surrogate models. Surrogates like kriging, radial basis function, support vector regression, etc. are used. Weighted average surrogates, including prediction -sum-of-squares-based (PRESS-based) weighted surrogate (PWS) and optimal weighted surrogate (OWS), constructed by above-mentioned individual surrogates, are also taken into consideration. The benefits of using the weighted average surrogate for function approximation and optimisation are investigated. The results demonstrate that OWS outperforms others in the context of prediction accuracy, and it also achieves the best improvement on crush resistance force by 41.7%, accompanied by 5.3% weight reduction compared with the original one. It seems an effective way to form an ensemble of surrogates to avoid a misleading optimum. The results also indicate that different surrogates would prefer different regions of design space. This indicates that simultaneous use of multiple surrogates could eliminate the surrogate dependency optimum, showing potential for surrogate-based design optimisation of non-linear problems.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Design optimisation of vehicle roof structures: benefits of using multiple surrogates


    Beteiligte:
    Pan, Feng (Autor:in) / Zhu, Ping (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2011-02-01


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    Lightweight design of vehicle front-end structure: contributions of multiple surrogates

    Pan,F. / Zhu,P. / Shanghai Jiao Tong Univ.,CN | Kraftfahrwesen | 2011


    Control-Oriented Design Using H-infinity Synthesis and Multiple Surrogates

    Bhat, Sanketh / Viana, Felipe A.C / Lind, Rick et al. | AIAA | 2010


    Estimating Feasibility Using Multiple Surrogates and ROC Curves

    Chaudhuri, A. / Le Riche, R. / Meunier, M. et al. | British Library Conference Proceedings | 2013