Buckling and bending analyses of a novel functionally graded porous plate using Chebyshev-Ritz method

• Autorzy: Chen D. , Yang J. , Kitipornchai S.

Identyfikatory

DOI

10.1016/j.acme.2018.09.004

• Języki publikacji: EN

Abstrakty

EN

To address the interfacial failure problem while maintain the main advantageous features in layered sandwich structures, a novel functionally graded (FG) porous plate is proposed where the continuous gradient in material properties based on a graded porosity offers a smooth stress distribution along the plate thickness so that the remarkable stress mismatch that leads to interfacial failure in the conventional sandwich structures can be avoided. The FG porous plate is assumed to be made of closed-cell Aluminium foams with Young's modulus, shear modulus, mass density and Poisson's ratio varying across the thickness. The mechanical property of closed-cell solids is used to determine the relationship between porosity coefficient and mass density coefficient. Based on the first-order shear deformation plate theory, the governing equations are derived and then solved by employing Chebyshev polynomials based Ritz method. The uniaxial, biaxial and shear buckling loads, bending deflections and stresses are obtained for fully clamped and simply supported porous plates. Numerical results show that compared with the conventional layered sandwich plate with a uniform porous core, the proposed FG porosity can eliminate the stress mismatch and yield significantly improved buckling and bending performances, promoting the advance and application of porous structures in multiple engineering areas.

Słowa kluczowe

EN

functionally graded porous plate; first-order shear deformation plate theory; Chebyshev-Ritz method; buckling; bending

PL

płyta porowata; metoda Czebyszewa-Ritza; wyboczenie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2019
• Tom: Vol. 19, no. 1
• Strony: 157--170
• Opis fizyczny: Bibliogr. 25 poz., rys., tab., wykr.

Twórcy

autor

Chen D.

• School of Civil Engineering, the University of Queensland, Brisbane, St Lucia 4072, Australia

autor

Yang J.

• School of Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia

autor

Kitipornchai S.

• School of Civil Engineering, the University of Queensland, Brisbane, St Lucia 4072, Australia

Bibliografia

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Uwagi

PL

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