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    Mechanics of Composite Sinusoidal Honeycomb Cores

    Source: Journal of Aerospace Engineering:;2005:;Volume ( 018 ):;issue: 001
    Author:
    Pizhong Qiao
    ,
    Jialai Wang
    DOI: 10.1061/(ASCE)0893-1321(2005)18:1(42)
    Publisher: American Society of Civil Engineers
    Abstract: Lightweight and heavy-duty fiber-reinforced polymer (FRP) composite honeycomb sandwich structures have been increasingly used in civil infrastructure. Unique cellular core configurations, such as sinusoidal core, have been applied in sandwich construction. Due to specific core geometry, the solutions for core effective stiffness properties are not readily available. This paper presents a mechanics of materials approach to evaluate the effective stiffness properties of sinusoidal cores. In particular, the internal forces of a curved wall in a unit cell are expressed in terms of resultant forces, and based on the energy method and principle of equivalence analysis, the in-plane stiffness properties of sinusoidal cores are derived. Both finite-element modeling and experimental testing are carried out to verify the accuracy of the proposed analytical formulation. To illustrate the present analytical approach as an efficient tool in optimal analysis and size selection of sinusoidal cores, several design plots are provided and discussed. The simplified analysis and formulation presented for sinusoidal cores can be used in design application of FRP honeycomb sandwich and optimization of efficient cellular core structures.
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      Mechanics of Composite Sinusoidal Honeycomb Cores

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    http://yetl.yabesh.ir/yetl1/handle/yetl/45018
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    contributor authorPizhong Qiao
    contributor authorJialai Wang
    date accessioned2017-05-08T21:16:12Z
    date available2017-05-08T21:16:12Z
    date copyrightJanuary 2005
    date issued2005
    identifier other%28asce%290893-1321%282005%2918%3A1%2842%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/45018
    description abstractLightweight and heavy-duty fiber-reinforced polymer (FRP) composite honeycomb sandwich structures have been increasingly used in civil infrastructure. Unique cellular core configurations, such as sinusoidal core, have been applied in sandwich construction. Due to specific core geometry, the solutions for core effective stiffness properties are not readily available. This paper presents a mechanics of materials approach to evaluate the effective stiffness properties of sinusoidal cores. In particular, the internal forces of a curved wall in a unit cell are expressed in terms of resultant forces, and based on the energy method and principle of equivalence analysis, the in-plane stiffness properties of sinusoidal cores are derived. Both finite-element modeling and experimental testing are carried out to verify the accuracy of the proposed analytical formulation. To illustrate the present analytical approach as an efficient tool in optimal analysis and size selection of sinusoidal cores, several design plots are provided and discussed. The simplified analysis and formulation presented for sinusoidal cores can be used in design application of FRP honeycomb sandwich and optimization of efficient cellular core structures.
    publisherAmerican Society of Civil Engineers
    titleMechanics of Composite Sinusoidal Honeycomb Cores
    typeJournal Paper
    journal volume18
    journal issue1
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)0893-1321(2005)18:1(42)
    treeJournal of Aerospace Engineering:;2005:;Volume ( 018 ):;issue: 001
    contenttypeFulltext
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