University of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Elastic analysis of FGM solid sphere with parabolic varying properties11010374910.22059/jcamech.2024.378912.1145ENMohammadZamani NejadDepartment of Mechanical Engineering, Yasouj University, Yasouj, IranMajidAbediEngineering Department, Arian Methanol Company, Asaluyeh, IranCollege of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, ChinaNadiaAlaviDepartment of Mechanical Engineering, Yasouj University, Yasouj, IranJournal Article20240703Using plane elasticity theory (PET), elastic analysis for solid sphere made of functionally graded materials (FGMs) and subjected to constant pressure is investigated in this paper. The mechanical properties except Poisson’s ratio are assumed to obey the parabolic variations in the radial direction. The emphasis of this article is to find an accurate solution for the analysis of the spherical dome structure in the case where the properties change based on a parabolic function. In this article, the constant inhomogeneity effect on elastic deformations as well as related stresses is investigated The displacement and stresses distributions are compared with the solutions of the finite element method (FEM) and good agreement are found.https://jcamech.ut.ac.ir/article_103749_b441821506492382e296bdd93b6ddf4b.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Thermoelastic plane strain solutions to rotating cylinders due to a refined fractional-order theory112610375010.22059/jcamech.2025.402334.1612ENAshraf M.ZenkourDepartment of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi ArabiaDepartment of Mathematics, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, EgyptTareqSaeedDepartment of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi ArabiaFinancial Mathematics and Actuarial Science (FMAS)-Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia0000-0002-0170-5286AbdullahAlmalkiDepartment of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi ArabiaJournal Article20250913This article develops a fractional-order Lord-Shulman (LS) generalized thermoelastic model to analyze a rotating hollow cylinder under plane strain. The cylinder, with traction-free surfaces, is subjected to non-uniform ramp-type heating on its outer boundary. Governing equations incorporating non-Fourier heat conduction are solved using the Laplace transform technique with numerical inversion. Results for temperature, displacement, stress, and dilatation are computed and graphically presented. The analysis demonstrates that both the fractional-order and ramp-time parameters significantly influence the thermoelastic response. Comparisons with classical Fourier-based theory highlight the model's accuracy in capturing wave propagation phenomena, providing critical insights for the design of structures experiencing sudden thermal loads.https://jcamech.ut.ac.ir/article_103750_40662a445a985526854c67d84d95fadb.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Computational Study of Micropolar Nanofluid Free Convection around a Circular Cylinder in a Porous Medium Subject to Magnetic and Electric Field Effects274010375110.22059/jcamech.2025.402637.1615ENHamzeh TahaAlkasasbehDepartment of Mathematics, Faculty of Science, Ajloun National University, P.O. Box 43, Ajloun 26810, Jordan0000-0003-3461-1988Doha MohammadZghoulDepartment of Mathematics, Faculty of Science, Ajloun National University, P.O. Box 43, Ajloun 26810, JordanTariq AAlararehSchool of Mathematical Sciences, Universiti Sains Malaysia, Penang,11800, MalaysiaJournal Article20250918The integration of nanoparticles into base fluids markedly improves their thermal conductivity, thereby enhancing heat transfer performance. This enhancement has been extensively studied within engineering and industrial contexts. Likewise, the behavior of micropolar fluids under boundary layer convection has been well-characterized. However, research on micropolar nanofluids, particularly in the context of flow around circular cylinders, remains limited. This study investigates the free convection boundary layer flow of micropolar nanofluids around a circular cylinder. The governing equations are non-dimensionalized and converted into partial differential equations using similarity transformations. These equations are subsequently solved numerically via the Keller-Box method implemented in MATLAB. The effects of nanoparticle volume fraction and micropolar fluid parameters on flow behavior are systematically examined. Results demonstrate that increases in parameters such as magnetic field strength and porous medium permeability generally lead to elevated local wall temperatures and enhanced temperature profiles, although some reductions can occur under specific conditions. These findings highlight the critical influence of nanoparticle concentration and micropolar fluid characteristics on thermal performance, offering valuable insights for advancing research in fluid mechanics and heat transfer applications.https://jcamech.ut.ac.ir/article_103751_03bbe10bcfa207053ec964d9009bc42d.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Computational Analysis of Natural Convection Heat Transfer in Nanofluids Under a Uniform Magnetic Field Using Levenberg–Marquardt Backpropagation Neural Networks416210415110.22059/jcamech.2025.399564.1580ENMuhammadSulaimanDepartment of Mathematics, Abdul Wali Khan University Mardan, Mardan, Khyber Pakhtunkhwa 23200, PakistanZawarHussainDepartment of Mathematics, Abdul Wali Khan University Mardan, Mardan, Khyber Pakhtunkhwa 23200, PakistanFahad SameerAlshammariDepartment of Mathematics, College of Science and Humanities in Alkharj, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi ArabiaGhaylenLaouinCollege of Engineering and Technology, American University of the Middle East, Egaila 54200, KuwaitJournal Article20250808This study examines heat transfer by natural convection between two infinitely parallel plates in hybrid nanofluids under a homogeneous magnetic field. It seeks to evaluate how well LMBNs predict nonlinear magnetoconvective flows. Using a similarity variable-based mathematical model, the governing partial differential equations are converted to ordinary differential equations. Using the traditional fourth-order Runge–Kutta approach, these equations are then solved numerically to provide reference data. A thorough study examines how temperature and velocity profiles are affected by several crucial dimensionless factors, including the Brownian motion parameter, squeezing number, Hartmann number, Schmidt number, and Eckert number. Results show that while raising the Hartmann number from 1 to 3 lowers the maximum velocity by almost 22%, raising the Eckert number from 0.1 to 0.5 increases the peak temperature by around 18%. With regression correlations exceeding 0.9999, the LMBNN model has prediction errors as low as 10⁻¹¹ to 10⁻¹², showing better accuracy than standard numerical interpolation techniques. The originality of this study comes from combining traditional numerical analysis with LMBNN training to produce a really accurate, data-driven surrogate model for nanofluid flows under magnetoconvection. This hybrid computational technique provides an effective instrument for forecasting heat transfer behavior in magnetic field-affected engineering applications.https://jcamech.ut.ac.ir/article_104151_84b23ce0a80995f7827b42b92147f018.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101A Caputo Time-Fractional Derivative Approach to Pulsatile Non-Newtonian Sutterby Blood Fluid Flow through a Vertical Stenotic Artery under MHD Influence638310415210.22059/jcamech.2025.403627.1630ENM. H.ShahDepartment of Geological Sciences, University of Alabama, Tuscaloosa, AL, USAREllahiDepartment of Mathematics & Statistics, International Islamic University, Islamabad, PakistanA.ZeeshanDepartment of Mathematics & Statistics, International Islamic University, Islamabad, PakistanDepartment of Mathematics, College of Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of KoreaT.AbbasDepartrment of Mathematics, Division of Science and Technology, University of Education, Lahore, PakistanJournal Article20251004Blood flow through arteries is essential for maintaining metabolism of the body. Tissue injury and metabolic issues can develop from a deficiency of blood supply. A stenotic artery can be a major cause of this deficiency of blood supply. It is interesting to note that new studies have shown that magnetic fields can benefit different body parts, including the cardiovascular system. In this study, blood is considered Sutterby fluid with time fractional derivative, to examine effect of a magnetic field as well as fractional parameter on blood flow past a stenotic artery. In addition, the thermal behavior of the flow due to electromagnetic interactions and radiative heat flux is considered. We obtained numerical solutions of coupled nonlinear momentum and energy equations by using finite difference method. A thorough graphical analysis of how various parameters affect flow dynamics is provided. Future research in this area and the choice of machine learning as an efficient technique to predict micropolar flow will be supported by the current study.https://jcamech.ut.ac.ir/article_104152_da796aece167fc975796915147831407.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Wave Propagation in Biological Tissue with Hyperbolic Two-Temperature and Temperature Dependent Effects under MGT Model8410610462510.22059/jcamech.2025.404097.1646ENKunalSharmaCheminde Chandieu 25,1006 Lausanne, SwitzerlandMarinMarinDepartment of Mathematics and Computer Science, Transilyania University of Brasov, 500036 Brasov, RomaniaAcademy of Romanian Scientists, Ilfov Street, 3, 050045 Bucharest, RomaniaRajneeshKumarDepartment of Mathematics, Kurukshetra University, Kurukshetra 136119, Haryana, IndiaJournal Article20251011This paper presents a theoretical study on the reflection of plane waves in a homogeneous, isotropic bio-thermoelastic diffusion half-space incorporating hyperbolic two-temperature (HTT) effects within the framework of Moore-Gibson-Thompson (MGT) heat conduction. The analysis is performed in two dimensions using dimensionless variables and potential function techniques to simplify the governing equations. Employing normal mode analysis, the study identifies the existence of four distinct longitudinal wave types and a single shear vertical (SV) wave, each propagating with different phase velocities. Analytical expressions for the amplitude ratios corresponding to longitudinal (P), thermal (T), chemical potential (Po), and shear vertical (SV) waves are derived and explored as functions of the incident angle, wave frequency, and relevant material parameters. The effects of the HTT parameter, blood perfusion rate, and various thermoelastic theories on the reflection coefficients are investigated through graphical illustrations. Several special cases are also discussed. The findings are relevant to applications in geomechanics, ocean engineering, and biomedical diagnostics, offering valuable insights into wave behavior in bio-thermoelastic diffusion media under the influence of HTT and MGT models. This work contributes a multiscale framework for studying wave propagation in such complex environments.https://jcamech.ut.ac.ir/article_104625_3d27435a906c8a27b999edf2ccdd290c.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Free axial and torsional vibration of boron nitride nanorods using nonlocal finite element method10712110462610.22059/jcamech.2025.403575.1634ENAleynaYazıcıogluCivil Engineering Department, Division of Mechanics, Akdeniz University, Antalya 07070, TürkiyeOmerCivalekCivil Engineering Department, Division of Mechanics, Akdeniz University, Antalya 07070, TürkiyeDepartment of Medical Research, China Medical University, Taichung, Taiwan0000-0003-1907-9479Journal Article20251005In this study, the formulation of nonlocal finite elements is developed for nanorods under axial and torsional vibrations using nonlocal elasticity theory. First, an overview of the topic is provided along with review of relevant studies in literature. Next, the fundamental formulations of nonlocal elasticity theory are presented, and the corresponding equations of motion for axial and torsional vibrations are derived. Based on these formulations, the stiffness and polar inertia matrices of the nanorod are obtained using the weighted residual method. Finally, the numerical results are illustrated through graphical representations, highlighting the effects of nanorod length, the number of finite elements, and the nonlocal parameters.https://jcamech.ut.ac.ir/article_104626_898f5e6bb850ef604ae89d6fe846645b.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Magneto-Bioconvection Dynamics of Synovial Nanofluids: Consequences of Porosity, Rheology, and Heat Generation12213310462710.22059/jcamech.2025.406289.1690ENShaimaa FatheyRamadanMathematical Department, Faculty of Science (Girls), Al-Azhar University, Nasr City, Cairo, EgyptM MBhattiMaterial Science Innovation and Modelling (MaSIM) Research Focus Area, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South AfricaDepartment of Physics, College of Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of KoreaKhaled SaadMekheimerMathematical Department, Faculty of Science (Girls), Al-Azhar University, Nasr City, Cairo, EgyptAli Mohamed Ali SolimanMoawadMathematical Department, Faculty of Science (Girls), Al-Azhar University, Nasr City, Cairo, EgyptC. M.KhaliqueMaterial Science Innovation and Modelling (MaSIM) Research Focus Area, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South AfricaJournal Article20251115The primary objective of this study is to analyze the thermal processes, nanoparticle concentration, and bioconvection mechanisms in a synovial fluid model using numerical methods. Two fluid models are considered: Model (1), representing a shear-thinning fluid, and Model (2), representing a shear-thickening fluid. The influences of magnetic field, porosity, Joule heating, and viscous dissipation are incorporated into the analysis. The governing equations for momentum, energy, nanoparticle concentration, and motile microorganism density are formulated using the lubrication approximation. The resulting nonlinear differential equations are solved numerically using the Runge–Kutta–Merson method and the finite difference scheme.<br />The effects of key parameters on velocity, temperature, nanoparticle concentration, and motile microorganism density are systematically explored. The study reveals that the magnetic field significantly alters the fluid motion, reducing velocity as magnetic intensity increases, whereas higher velocities are observed in the shear-thinning model. The synovial fluid achieves its maximum velocity near the knee cartilage surface. The temperature profile is higher in Model (1) than in Model (2), primarily due to heat generation effects. The concentration production parameter also affects the thermal field, leading to lower nanoparticle concentrations in Model (1). Moreover, the thermophoretic parameter decreases nanoparticle concentration, while the Brownian motion parameter enhances it. Heat-source-driven fluid motion ultimately reduces the density of motile microorganisms.https://jcamech.ut.ac.ir/article_104627_6a0ada02acf5d3f72c2162f067ec2d76.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101Numerical investigation of compact-tension specimen failure based on auxetic structures13414910463410.22059/jcamech.2025.404015.1645ENAmir HessamFeiziSchool of Mechanical Engineering, University of Tehran, Tehran, IranAlirezaDaneshmehrSchool of Mechanical Engineering, University of Tehran, Tehran, IranJournal Article20251011The study of crack growth behavior and fracture mechanisms in engineering materials plays a pivotal role in enhancing the design of resilient structures and in the development of advanced materials. In this context, auxetic structures, characterized by a negative Poisson's ratio, have introduced new perspectives in the field of fracture mechanics due to their unique properties. The present work numerically investigates the fracture behavior of a compact-tension (CT) specimen with a pre-crack and standard geometric dimensions, based on auxetic cellular structures fabricated from 7075-T651 Aluminum Alloy. The objective is to evaluate crack propagation, reaction forces and energy absorption in various lattice structures with negative and positive Poisson’s ratios. For this purpose, the specimen geometries were designed by embedding unit cell patterns within the rectangular region of the specimen while maintaining the uniform thickness of the surrounding cell walls. Uniaxial tensile loading was then simulated using pre-designed grips. Furthermore, a uniaxial tensile test simulation was conducted for all specimens in accordance with relevant standards to determine and compare their Poisson's ratios. To facilitate a mass-independent comparison of structural performance, the reaction forces were normalized. Analysis of the results indicates that the auxetic structures developed in this study exhibit a significant improvement in fracture resistance over the conventional re-entrant auxetic structure.https://jcamech.ut.ac.ir/article_104634_001727db4c8f5c8872b565862ed4d804.pdfUniversity of Tehran PressJournal of Computational Applied Mechanics2423-671357120260101A Brief Review on the Static and Dynamic Analyses of Beams and Plates via ANSYS15017210464710.22059/jcamech.2025.404771.1663ENLeventTuranDepartment of Civil Engineering, Akdeniz University, Antalya, 07070, TürkiyeShahriarDastjerdiDepartment of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, IranBekirAkgözDepartment of Civil Engineering, Akdeniz University, Antalya, 07070, TürkiyeJournal Article20251022While structural calculations for materials used in human use were previously possible with complex formulas and equations, technological advances have now made it possible to perform these calculations easily and quickly. Computer-aided calculations provide significant benefits to today's engineering and contribute to our future. Finite element method (FEM)-based computer programs are used in many engineering disciplines and eliminate significant disadvantages such as time and cost in projects. This brings FEM-based computer programs to the forefront of engineering calculations. With its numerous features, ANSYS allows us to conduct studies on the behavior of materials under analysis, including buckling, bending, vibration and temperature. This study examines the benefits of using ANSYS for static and dynamic analyses of structural elements such as beams and plates, its contributions to calculations, and its potential contributions to the future of engineering.https://jcamech.ut.ac.ir/article_104647_8f02ea524ae6b4a3481b01c8a0472cd4.pdf