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http://dx.doi.org/10.12989/scs.2022.45.3.305

Static and stress analyses of bi-directional FG porous plate using unified higher order kinematics theories  

Mohamed, Salwa (Department of Engineering Mathematics, Faculty of Engineering, Zagazig University)
Assie, Amr E. (Mechanical Engineering Department, Faculty of Engineering, Jazan University)
Mohamed, Nazira (Department of Engineering Mathematics, Faculty of Engineering, Zagazig University)
Eltaher, Mohamed A. (Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University)
Publication Information
Steel and Composite Structures / v.45, no.3, 2022 , pp. 305-330 More about this Journal
Abstract
This article aims to investigate the static deflection and stress analysis of bi-directional functionally graded porous plate (BDFGPP) modeled by unified higher order kinematic theories to include the shear stress effects, which not be considered before. Different shear functions are described according to higher order models that satisfy the zero-shear influence at the top and bottom surfaces, and hence refrain from the need of shear correction factor. The material properties are graded through two spatial directions (i.e., thickness and length directions) according to the power law distribution. The porosities and voids inside the material constituent are described by different cosine functions. Hamilton's principle is implemented to derive the governing equilibrium equation of bi-directional FG porous plate structures. An efficient numerical differential integral quadrature method (DIQM) is exploited to solve the coupled variable coefficients partial differential equations of equilibrium. Problem validation and verification have been proven with previous prestigious work. Numerical results are illustrated to present the significant impacts of kinematic shear relations, gradation indices through thickness and length, porosity type, and boundary conditions on the static deflection and stress distribution of BDFGP plate. The proposed model is efficient in design and analysis of many applications used in nuclear, mechanical, aerospace, naval, dental, and medical fields.
Keywords
bi-directional functional graded; higher order kinematic relations; Numerical DIQM; plate theories; porous structurers; static and stress analyses;
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91 Gao, Z., Li, H., Zhao, J., Guan, J. and Wang, Q. (2021), "Analyses of dynamic characteristics of functionally graded porous (FGP) sandwich plates with viscoelastic materials-filled square-celled core", Eng. Struct., 248, 113242. https://doi.org/10.1016/j.engstruct.2021.113242.   DOI
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93 Hamed, M.A., Abo-Bakr, R.M., Mohamed, S.A. and Eltaher, M.A. (2020), "Influence of axial load function and optimization on static stability of sandwich functionally graded beams with porous core", Eng. Comput., 36(4), 1929-1946. https://doi.org/10.1007/s00366-020-01023-w.   DOI
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