Abstract
In this paper, sandwich plate, constructed with orthotropic and isotropic composite materials, is analyzed to obtain the static and harmonic behavior. The analysis is done by using ANSYS APDL FEM tool. A solid-shell 190 and an 8-node solid 185 elements are employed for face and core material respectively to analyze the plate. Results was attained by using Reissner-Mindlin theory. Effect of increasing thickness ratio of face sheet to depth of the plate is presented on static, vibration and harmonic response on the sheet and the results are discussed briefly. Published work in open domain was used to validate the results and observed excellent agreement. It can be stated that proposed model presents results with remarkable accuracy. Results are obtained to reduce the weight of the plate and minimizing the vibration amplitudes.
Key Words
ANSYS; FEM; Harmonic analysis; sandwich plate; static analysis
Address
Manoj Nawariya: Department of Mechanical Engineering, IPS College of Technology and Management, Gwalior, 474001 India
Avadesh K. Sharma: Department of Mechanical Engineering, Rajkiya Engineering College, Mainpuri, 205119, India
Pankaj Sonia: Department of Mechanical Engineering, GLA University, Mathura, UP, 281406, India
Vijay Verma: Department of Mechanical Engineering, Bundelkhand Institute of Engineering & Technology,
Jhansi, 284128, India
Abstract
The purpose of this paper is to study the effects of magnetic field and gravitational field on fiberreinforced
thermoelastic medium with memory-dependent derivative. Three-phase-lag model of thermoelasticity (3PHL) is used to study the plane waves in a fiber-reinforced magneto-thermoelastic material with memorydependent derivative. A gravitating magneto-thermoelastic two-dimensional substrate is influenced by both thermal shock and mechanical loads at the free surface. Analytical expressions of the considered variables are obtained by using Laplace-Fourier transforms technique with the eigenvalue approach technique. A numerical example is considered to illustrate graphically the effects of the magnetic field, gravitational field and two types of mechanical loads (continuous load and impact load).
Key Words
fiber-reinforced thermoelastic; gravity; magnetic field; memory-dependent derivative; threephase-lag model
Address
Mohamed I.A. Othman, Samia M. Said: Department of Mathematics, Faculty of Science, Zagazig University, P.O. Box 44519, Zagazig, Egypt
Elsayed M. Abd-Elaziz: Ministry of Higher Education, Zagazig Higher Institute of Engineering & Technology, Zagazig, Egypt
Abstract
The development of sustainable composites materials, from recycled polymeric materials and waste from the wood industry and stone processing, allows reducing the volume of these by-products, minimizing impacts on health and the environment. Nowadays, Polypropylene (PP) is the most recycled polymer in industry, while the furniture industry has increasingly used timber felled from sustainable forest plantations as a eucalypt. The powder tailing from the ornamental stone extraction and processing industry is commonly disposed of in the environment without previous treatment. Thus, the technological option for the development of composite materials presents itself as a sustainable alternative for processing and manufacturing industries, enabling the development of new materials with special technical features. The results showed that powder granite particles may be incorporated into the polypropylene matrix associated with short eucalyptus fibres forming green hybrid composites with potential application in structural engineering, such as transport and civil construction industries.
Key Words
eucalyptus fibres; granite particles; green material; recycled polypropylene; sustainable composites
Address
Rômulo Maziero, Washington M. Cavalcanti, Bruno D. Castro, Juan C. Campos Rubio: Graduate Program in Mechanical Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil
Claudia V. Campos Rubio, Luciano M.G. Vieira: Grupo de Inovação e Tecnologia em Materiais (GiTeM), Mechanical Engineering Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
Tulio H. Panzera: Centre for Innovation and Technology in Composite Materials, Department of Mechanical and Production Engineering, Federal University of São João del Rei, São João del Rei 36301-158, Brazil
Abstract
In this paper, a size-dependent dynamic investigation of a porous metal foams microbeams is presented. The novelty of this study is to use a metal foam microbeam that contain porosities based on the refined high order shear deformation beam model, with sinusoidal shear strain function, and the modified strain gradient theory (MSGT) for the first time. The Lagrange's principle combined with differential quadrature hierarchical finite element method (DQHFEM) are used to obtain the porous microbeam governing equations. The solutions are presented for the natural frequencies of the porous and homogeneous type microbeam. The obtained results are validated with the analytical methods found in the literature, in order to confirm the accuracy of the presented resolution method. The influences of the shape of porosity distribution, slenderness ratio, microbeam thickness, and porosity coefficient on the free vibration of the porous microbeams are explored in detail. The results of this paper can be used in various design for metallic foam micro-structures in engineering.
Key Words
DQHFEM; free vibration; metal foam microstructures; microbeam; modified strain gradient theory; porosity
Address
Ahmed Saimi: IS2M Laboratory, Faculty of Technology, University of Tlemcen, Algeria; National Higher School of Hydraulic, Blida, Algeria
Ismail Bensaid, Ihab Eddine Houalef: IS2M Laboratory, Faculty of Technology, University of Tlemcen, Algeria
Miloud Ladmek, Abdelkader Belkacem, Ahmed Amine Daikh, Aicha Bessaim, Aman Garg, Mohammed Sid Ahmed Houari, Mohamed-Ouejdi Belarbi and Abdelhak Ouldyerou
Abstract
This paper proposes an analytical method to investigate the free vibration behaviour of new functionally graded (FG) carbon nanotubes reinforced composite beams based on a higher-order shear deformation theory. Cosine functions represent the material gradation and material properties via the thickness. The kinematic relations of the beam are proposed according to trigonometric functions. The equilibrium equations are obtained using the virtual work principle and solved using Navier's method. A comparative evaluation of results against predictions from literature demonstrates the accuracy of the proposed analytical model. Moreover, a detailed parametric analysis checks for the sensitivity of the vibration response of FG nanobeams to nonlocal length scale, strain gradient microstructure-scale, material distribution and geometry.
Key Words
higher order nonlocal strain gradient theory; nanobeams; Navier's solution; novel trigonometric FGM; vibration
Address
Miloud Ladmek: Laboratoire d'Etude des Structures et de Mécanique des Matériaux, Département de Génie Civil, Faculté des Sciences et de la Technologie, Université Mustapha Stambouli, B.P. 305, R.P., Mascara 29000, Algeria
Abdelkader Belkacem: Laboratoire d'Etude des Structures et de Mécanique des Matériaux, Département de Génie Civil, Faculté des Sciences et de la Technologie, Université Mustapha Stambouli, B.P. 305, R.P., Mascara 29000, Algeria
Ahmed Amine Daikh: Laboratoire d'Etude des Structures et de Mécanique des Matériaux, Département de Génie Civil, Faculté des Sciences et de la Technologie, Université Mustapha Stambouli, B.P. 305, R.P., Mascara 29000, Algeria; Department of Technology, University Centre of Naama, Naama 45000, Algeria
Aicha Bessaim: Laboratoire d'Etude des Structures et de Mécanique des Matériaux, Département de Génie Civil, Faculté des Sciences et de la Technologie, Université Mustapha Stambouli, B.P. 305, R.P., Mascara 29000, Algeria
Aman Garg: Department of Civil Engineering, National Institute of Technology, Kurukshetra, Haryana 136119, India; Department of Aerospace Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
Mohammed Sid Ahmed Houari: Laboratoire d'Etude des Structures et de Mécanique des Matériaux, Département de Génie Civil, Faculté des Sciences et de la Technologie, Université Mustapha Stambouli, B.P. 305, R.P., Mascara 29000, Algeria
Mohamed-Ouejdi Belarbi: Laboratoire de Recherche en Génie Civil, LRGC, Université de Biskra, B.P. 145, R.P. 07000, Biskra, Algeria
Abdelhak Ouldyerou: Department of Engineering Management, College of Engineering, Prince Sultan University, Riyadh, 11586, Saudi Arabia; Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria
