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Information Journal Paper

Title

IMPLEMENTATION OF HIGHER ORDER SHEAR THEORY ON ISOTROPIC MATERIAL AND LIU’S BENDING PART ON LAMINATED COMPOSITE FLAT SHELL ELEMENTS

Pages

  57-83

Abstract

 Plate and shell analysis using classical plate theory (CPT) has a lack of accuracy in predicting the influence of transverse deformation, because of its assumption that the line normal to the surface remains straight and normal to the midplane before and after deformation. The next revision by constant SHEAR DEFORMATION theory or famous as first order SHEAR DEFORMATION theory (CSDT/FOSDT) still suffers a disadvantage that has a constant value in the shear term that is called shear locking phenomenon. This matter has been corrected by higher order SHEAR DEFORMATION theory (HOSDT) using a refined assumption that the line normal to the surface should be in a parabolic function and not normal to the midplane, but normal to the surfaces so that it fulfills the zero strain in the surface. The analysis of the bending part of laminated composite flat shell element is applied by higher order lamination theory (HOLT) that is adopted from HOSDT. This model is accurate for thicknesses variation and complex materials. HOLT model is implemented into finite element procedure to find deflection, stresses and internal forces. It can be concluded that the displacement and stresses in HOLT model are higher than FOLT the ones (first order lamination theory) in small ratio of a/h dan its result almost the same value for a/h ratio more than 10. In a square plate case, the displacement gets smaller if the fiber arranged into cross-ply sequence. Interlaminar stresses along the thickness is not distributed continuously, but they have certain modes that depend on the depth of point position, the lamina or layer number, fiber orthotropic angle of each layer and a/h ratio.

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    Cite

    APA: Copy

    ROCHMAN, TAUFIQ, SOEHARDJONO, AGOES, & ZACOEB, ACHFAS. (2011). IMPLEMENTATION OF HIGHER ORDER SHEAR THEORY ON ISOTROPIC MATERIAL AND LIU’S BENDING PART ON LAMINATED COMPOSITE FLAT SHELL ELEMENTS. INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING, 3(1), 57-83. SID. https://sid.ir/paper/319708/en

    Vancouver: Copy

    ROCHMAN TAUFIQ, SOEHARDJONO AGOES, ZACOEB ACHFAS. IMPLEMENTATION OF HIGHER ORDER SHEAR THEORY ON ISOTROPIC MATERIAL AND LIU’S BENDING PART ON LAMINATED COMPOSITE FLAT SHELL ELEMENTS. INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING[Internet]. 2011;3(1):57-83. Available from: https://sid.ir/paper/319708/en

    IEEE: Copy

    TAUFIQ ROCHMAN, AGOES SOEHARDJONO, and ACHFAS ZACOEB, “IMPLEMENTATION OF HIGHER ORDER SHEAR THEORY ON ISOTROPIC MATERIAL AND LIU’S BENDING PART ON LAMINATED COMPOSITE FLAT SHELL ELEMENTS,” INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING, vol. 3, no. 1, pp. 57–83, 2011, [Online]. Available: https://sid.ir/paper/319708/en

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