Topology optimization for simplified structural fire safety

Søren Madsen, Nis P. Lange, Luisa Giuliani, Grunde Jomaas, Boyan Stefanov Lazarov, Ole Sigmund

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    Abstract

    Topology optimization is applied in an idealized structural fire safety model, where the minimum compliance problem is constrained by temperature-controlled structural degradation. The constraint ensures a certain structural stiffness after a prescribed time. As this time period is extended, resulting optimized topologies tend to become thicker or introduce redundant members that can take over when structural parts near the origin of the fire lose their load carrying capability. Hence, the structural degradation model acts as an erosion operator on the topology and indirectly enforces a minimum length scale on the final designs.
    Original languageEnglish
    JournalEngineering Structures
    Volume124
    Pages (from-to)333-343
    Number of pages11
    ISSN0141-0296
    DOIs
    Publication statusPublished - 2016

    Keywords

    • Length scale
    • Multiphysics
    • Robustness
    • Structural fire safety
    • Topology optimization

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