Stress and failure analysis of composite plates with a circular hole subjected to shear loading. Part 2, Results and discussions

• Autorzy: Khechai Abdelhak , Tati Abdelouahab , Belarbi Mohamed-Ouejdi , Rekbi Fares Mohammed Laid
• Języki publikacji: EN

Abstrakty

EN

This paper, the second part of two parts of a complete paper, presents the analytical and numerical results of stresses around circular cutouts in anisotropic and isotropic plates under shear loading. The main aim of this study is to understand the effect of the presence of cutouts on the stress concentration and failure mechanisms in composite laminates. The numerical investigations are performed by means of the quadrilateral finite element of four nodes with thirty-two degrees of freedom. The present finite element is a combination of two finite elements. The first one is a simple linear isoparametric membrane element and the second one is a high-precision rectangular Hermitian element. The analytical and finite element formulations were presented in the first part of the paper. Several new examples are considered to demonstrate and affirm the accuracy and the performance of the present element and to highlight the effect of some parameters on the stress distributions. The numerically obtained results are found to be in good agreement with the analytical findings. On the other hand, first ply failure (FPF) strengths in laminates with and without holes are calculated by adapting the Hashin-Rotem, Tsai-Hill, and Tsai-Wu failure theories. Finally, the numbers of the figures are obtained, using various E₁/E₂ ratio values, for the maximum positive and negative stresses values located in the vicinity of the cutout versus the angular location of points, and for various fiber orientation angles.

Słowa kluczowe

EN

anisotropic plates; stress concentration; circular cutout; failure criterion; shear loading

PL

anizotropowe płyty; koncentracja naprężeń; kryterium wytężeniowe; obciążenie ścinające

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2022
• Tom: R. 22, nr 4
• Strony: 225--232
• Opis fizyczny: Bibliogr. 44 poz., rys., tab.

Twórcy

autor

Khechai Abdelhak

• Laboratoire de Recherche en Génie Civil, LRGC, Université de Biskra, B.P. 145, R.P. 07000, Biskra, Algeria

autor

Tati Abdelouahab

• Laboratoire de Génie Energétique et Matériaux, LGEM, Université de Biskra, B.P. 145, R.P. 07000, Biskra, Algeria

autor

Belarbi Mohamed-Ouejdi

• Laboratoire de Recherche en Génie Civil, LRGC, Université de Biskra, B.P. 145, R.P. 07000, Biskra, Algeria

autor

Rekbi Fares Mohammed Laid

• Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algeria

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).