An efficient approach for series system reliability-based design optimization (RBDO) is presented. The key idea is to apportion optimally the system reliability among the failure modes by considering the target values of the failure probabilities of the modes as design variables. Critical failure modes that contribute the most to the overall system reliability are identified. This paper proposes a computationally efficient, system RBDO approach using a single-loop method where the searches for the optimum design and for the most probable failure points proceed simultaneously. Specifically, at each iteration the optimizer uses approximated most probable failure points from the previous iteration to search for the optimum. A second-order Ditlevsen upper bound is used for the joint failure probability of failure modes. Also, an easy to implement active strategy set is employed to improve algorithmic stability. The approach is demonstrated on two design examples involving a beam and, an internal combustion engine.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    System Reliability-Based Design using a Single-Loop Method


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE World Congress & Exhibition ; 2007



    Erscheinungsdatum :

    16.04.2007




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    System reliability-based design using a single-loop method

    Liang,J. / Mourelatos,Z.P. / Nikolaidis,E. et al. | Kraftfahrwesen | 2007


    System Reliability-Based Design using a Single-Loop Method

    Liang, J. / Mourelatos, Z. P. / Nikolaidis, E. et al. | British Library Conference Proceedings | 2007



    2007-01-0555 System Reliability-Based Design using a Single-Loop Method

    Liang, J. / Mourelatos, Z. P. / Nikolaidis, E. et al. | British Library Conference Proceedings | 2007