Mode frequency analysis of antisymmetric angle-ply laminated composite stiffened hypar shell with cutout

• Autorzy: Chaudhuri Puja Basu , Mitra Anirban , Sahoo Sarmila

Identyfikatory

DOI

10.2478/mme-2019-0022

• Języki publikacji: EN

Abstrakty

EN

This article deals with finite element method for the analysis of antisymmetric angle-ply laminated composite hypar shells (hyperbolic paraboloid bounded by straight edges) that applies an eight-noded isoparametric shell element and a three-noded beam element to study the mode-frequency analysis of stiffened shell with cutout. Two-, 4-, and 10-layered antisymmetric angle-ply laminations with different lamination angles are considered. Among these, 10-layer antisymmetric angle-ply shells are considered for elaborate study. The shells have different boundary conditions along its four edges. The formulation is based on the first-order shear deformation theory. The reduced method of eigen value solution is chosen for the undamped free vibration analysis. The first five modes of natural frequency are presented. The numerical studies are conducted to determine the effects of width-to-thickness ratio (b/h), degree of orthotropy (E₁₁/E₂₂), and fiber orientation angle (θ) on the nondimensional natural frequency. The results reveal that free vibration behavior mainly depends on the number of boundary constraints rather than other parametric variations such as change in fiber orientation angle and increase in degree of orthotropy and widthto-thickness ratio.

Słowa kluczowe

EN

stiffened hypar shell; cutout; anti-symmetric angle-ply composite; finite element method; modefrequency analysis

PL

powłoka użebrowana; wycięcie; metoda elementów skończonych

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2019
• Tom: Vol. 23, nr 1
• Strony: 162--171
• Opis fizyczny: Bibliogr. 26 poz., rys., wykr.

Twórcy

autor

Chaudhuri Puja Basu

• Department of Civil Engineering, Heritage Institute of Technology, Kolkata 700107, India

autor

Mitra Anirban

• Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India

autor

Sahoo Sarmila

• Department of Civil Engineering, Heritage Institute of Technology, Kolkata 700107, India

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).