Optimization of hybrid aluminum/cfrp box beams

Thanasis Triantafillou, P. Kim, U. Meier

    Research output: Contribution to journalArticle

    Abstract

    Hybrid structural components in which a principal aluminum structure is reinforced with unidirectional CFRP composite laminates are an effective way to meet the requirements of low weight, high strength and stiffness, relative ease of design and fabrication and good reliability. Designing such components must be done by a procedure appropriate to the material system, with a careful consideration of the failure modes and the possibility of optimizing the component. In this study we analyze the problem of minimum weight design of CFRP-reinforced thin-walled rectangular aluminum sections subjected to given strength and stiffness constraints. The problem is formulated within the framework of classical nonlinear optimization analysis. It is shown that at the optimum design various local failure mechanisms occur simultaneously, while stiffness rarely controls. Experimental results support the accuracy of the calculations and provide additional information on the flexural behavior of hybrid aluminum/CFRP members.

    Original languageEnglish (US)
    Pages (from-to)729-739
    Number of pages11
    JournalInternational Journal of Mechanical Sciences
    Volume33
    Issue number9
    DOIs
    StatePublished - Jan 1 1991

    Fingerprint

    box beams
    carbon fiber reinforced plastics
    Carbon fiber reinforced plastics
    Aluminum
    stiffness
    Stiffness
    aluminum
    optimization
    low weight
    failure modes
    high strength
    Failure modes
    laminates
    Laminates
    Fabrication
    requirements
    fabrication
    composite materials
    Composite materials
    carbon fiber reinforced plastic

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

    Optimization of hybrid aluminum/cfrp box beams. / Triantafillou, Thanasis; Kim, P.; Meier, U.

    In: International Journal of Mechanical Sciences, Vol. 33, No. 9, 01.01.1991, p. 729-739.

    Research output: Contribution to journalArticle

    Triantafillou, Thanasis ; Kim, P. ; Meier, U. / Optimization of hybrid aluminum/cfrp box beams. In: International Journal of Mechanical Sciences. 1991 ; Vol. 33, No. 9. pp. 729-739.
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