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Structural and Multidisciplinary Optimization
Erschienen in: Structural and Multidisciplinary Optimization 4/2013

01.10.2013 | Research Paper

Determination of realistic worst imperfection for cylindrical shells using surrogate model

verfasst von: Bo Wang, Peng Hao, Gang Li, Yaochu Fang, Xiaojun Wang, Xi Zhang

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 4/2013

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Abstract

Thin-walled cylindrical shells subjected to axial compression are sensitive to initial geometrical imperfections. Firstly, the influence of a single dimple imperfection on the load-carrying capacity of cylindrical shells is investigated by varying the amplitudes, directions and positions of the dimple imperfection. Then a single delta function is introduced to describe the profile of the dimple imperfection in a more general form, which enables to analyze conveniently the effect of the imperfect zone area on the load-carrying capacity of cylindrical shells. Thereafter, a surrogate-based optimization framework of determining the worst realistic imperfection is proposed to study the reduction of the buckling load of cylindrical shells based on a finite number of dimple imperfections. The possible dimple imperfections may be introduced during the service of cylindrical shells. Finally the effectiveness of the present method is demonstrated by an illustrative example.
Vorheriger Artikel The smart normal constraint method for directly generating a smart Pareto set
Nächster Artikel Stacking sequence optimization with genetic algorithm using a two-level approximation

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Metadaten
Titel
Determination of realistic worst imperfection for cylindrical shells using surrogate model
verfasst von
Bo Wang
Peng Hao
Gang Li
Yaochu Fang
Xiaojun Wang
Xi Zhang
Publikationsdatum
01.10.2013
Verlag
Springer Berlin Heidelberg
Erschienen in
Structural and Multidisciplinary Optimization / Ausgabe 4/2013
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-013-0922-9

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