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Joint micromechanical model for determination of effective elastic and electromagnetic properties of porous materials Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-03-15 M Markov, I Markova, R Ávila-Carrera
In this paper we propose an approach for calculating the effective physical properties of porous materials (for example, sedimentary rocks) which is based on the unified structure of the pore space. This approach is based on the Generalized Differential Effective Medium (GDEM) method. This method generalizes the classical differential scheme (DEM) for the case of many types of inclusions. The physical
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Thermoelastic stress analysis of a functionally graded annular rotating disc with radially varying properties Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-03-14 Pooja Rani, Kuldip Singh
In this paper, thermoelastic stresses of a functionally graded annular rotating disc subjected to internal and external pressure has been studied. Elasticity modulus, thermal conductivity, coefficient of thermal expansion and density of the disc are presumed to vary radially in accordance with three distinct power-law functions and the Poisson's ratio remains constant. A gradient index parameter is
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On mechanics of piezocomposite shell structures Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-03-12 Mohammad Malikan
This study presents an original and novel investigation into the mechanics of piezo-flexo-magneto-elastic nanocomposite doubly-curved shells (PFMDCSs) and the ability to detect the lower and higher levels of electro-magnetic fields. In this context, by utilizing the first-order shear deformation shell model, stresses and strains are acquired. By imposing Hamilton's principle and the von Kármán approach
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Elastostatics of nonuniform miniaturized beams: Explicit solutions through a nonlocal transfer matrix formulation Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-03-10 Hossein Darban
A mathematically well-posed nonlocal model is formulated based on the variational approach and the transfer matrix method to investigate the size-dependent elastostatics of nonuniform miniaturized beams. The beams are composed of an arbitrary number of sub-beams with diverse material and geometrical properties, as well as small-scale size dependency. The model adopts a stress-driven nonlocal approach
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A differential scheme for the effective conductivity of microinhomogeneous materials with the Hall effect Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-03-07 Mikhail Markov, Anatoly Markov, Valery Levin
A differential scheme is proposed for the calculation of the components of the effective electrical conductivity tensor of a microinhomogeneous material taking into account the Hall effect. The presence of the Hall effect results in an appearance of asymmetry of the components of the conductivity tensor and a dependence of these components on the magnitude of the magnetic field applied to the material
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On nonlinear rheology of masonries and granular media Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-03-06 Emanuele Reccia, Victor A. Eremeyev
We introduce a new rheological nonlinear model for some granular media such as masonries. The latter may demonstrate a rather complex behaviour. In fact, considering a masonry one can see that relative rotations of bricks are most important in comparison with deformation of bricks themselves. As a result, one gets stresses and couple stresses as static characteristics of such a medium. Using the Cosserat
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Influence of material anisotropy on the mechanics of surface damage Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-23 A.V. Savikovskii, A.S. Semenov, M.L. Kachanov
The problem of multiple cracks originating at free surface (surface damage) in an anisotropic material is considered. We focus on the effect of material anisotropy on the mechanics of crack interactions – in particular, on the suppressing effect of interactions on crack nucleation and growth under the tensile loading (stress shielding). Importantly, this effect may change to the opposite one of enhancement
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Thermomechanical modeling of functionally graded materials based on bimaterial fundamental solutions Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-20 Chunlin Wu, Liangliang Zhang, George J. Weng, Huiming Yin
The Green’s function technique has been used to directly calculate the local fields of a functionally graded material (FGM) under thermomechanical loading, thus predicting its effective material properties. For a bi-phase FGM continuously switching the particle and matrix phases, the particle size and material gradation play a complex role in its effective material behavior. Using Eshelby’s equivalent
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Modelling issues and advances in nonlocal beams mechanics Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-20 Raffaele Barretta, Raimondo Luciano, Francesco Marotti de Sciarra, Marzia Sara Vaccaro
Nonlocal continuum mechanics presents still open questions about applicability of integral constitutive theories to nanostructures of current interest in Engineering Science. Nevertheless, nonlocal elasticity is widely exploited to model size effects in small-scale structures since it represents an effective tool to avoid computationally expensive procedures. The known strain-driven approach proposed
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Electro-mechanical surface wrinkling of a finite block of dielectric elastomers accounting for the pre-stretch and the aspect ratio Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-19 Lingling Chen, Xu Yang, Chuo Zhao, Shengyou Yang
Surface instability of elastomers is of great interest in engineering science, especially in the characterization of flexible electronic materials and the manufacture of micro-nano surface topography. There is limited research on how the geometry of the block affects wrinkle appearance in a multiphysics environment. In this paper, we formulate the boundary-value problem and its incremental forms to
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A midsurface elasticity model for a thin, nonlinear, gradient elastic plate Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-08 C. Rodriguez
In this paper, we derive a dynamic surface elasticity model for the two-dimensional midsurface of a thin, three-dimensional, homogeneous, isotropic, nonlinear gradient elastic plate of thickness . The resulting model is parameterized by five, conceivably measurable, physical properties of the plate, and the stored surface energy reduces to Koiter’s plate energy in a singular limiting case. The model
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Interaction of in-plane waves with a structured penetrable line defect in an elastic lattice Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-06 M.J. Nieves, B.L. Sharma
We consider the scattering of in-plane waves that interact with an edge of a structured penetrable inertial line defect contained in a triangular lattice, composed of periodically placed masses interconnected by massless elastic rods. The steady state problem for a time-harmonic excitation is converted into a vector Wiener–Hopf equation using the Fourier transform. The matrix Wiener–Hopf kernel of
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Residual stress and material symmetry Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-29 K.R. Rajagopal, A. Wineman
There seems to be a basic misconception in several recent papers concerning the material symmetry of bodies in configurations that are pre-stressed. In this short paper we point to the source of the error and show that the material symmetry that is possible depends on the nature of the pre-stress. We also extend the results for material symmetry which have been well-known within the context of simple
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Moving load excited dynamics of multi-layered imperfect microplates based on various micromechanical models Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-02 Behrouz Karami, Mergen H. Ghayesh
This paper presents an investigation into the importance of micromechanical models in the analysis of forced vibrations of multi-layered microplates under a moving load. The microplate has a core fabricated from functionally graded materials and face sheets consisting of metal foam. The problem is modelled via a quasi-3D shear deformable method and the modified couple stress theory. This study assumes
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Palladium-free multicomponent high temperature shape memory alloys Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-01 N. Resnina, S. Belyaev, A. Bazlov, I. Ponikarova, A. Sibirev, A. Ivanov, R. Bikbaev, I. Strochko
One of the challenges is the design of the relatively cheap Pd-free multicomponent high-temperature shape memory alloys. This paper presents the route for solving this problem by an increasing the Hf concentration in Ti–Hf–Zr–Ni–Cu–Co alloys. It was found that an increase in the Hf concentration from 23 to 32 at.% increased the transformation temperatures: changed from 90 °C to 220 °C, varied from
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Multi-fields in multiferroic materials induced by eigenfields and remote loads Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-02-01 Xiaochang Liu, Wei Ye
This work presents the analytical solution to the multi-fields in the whole domain of 3D multiferroic materials with an ellipsoidal inclusion/inhomogeneity induced by eigenfields and remote loads. It is a unified approach for the fully-coupled analysis of single-phase multiferroic materials and multiferroic composite materials, which are verified by comparing with available results in the literature
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Surface finite viscoelasticity and surface anti-plane waves Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-24 Victor A. Eremeyev
We introduce the surface viscoelasticity under finite deformations. The theory is straightforward generalization of the Gurtin–Murdoch model to materials with fading memory. Surface viscoelasticity may reflect some surface related creep/stress relaxation phenomena observed at small scales. Discussed model could also describe thin inelastic coatings or thin interfacial layers. The constitutive equations
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Dynamic behaviour of carbon-nanotube reinforced functionally graded double-arch systems Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-16 Oscar Zi Shao Ong, Mergen H. Ghayesh
The goal of the current investigation is to determine the dynamic behaviour of double-arch systems: the system is made of two arches reinforced by three different functionally graded patterns of carbon nanotubes and connected with an elastic layer of spring bed. The carbon-nanotube functionally graded patterns considered are uniformly distributed, FG-X and FG-O. Two different boundary conditions of
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The variational principle for probabilistic measure and Hashin–Shtrikman bounds Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-16 Victor L. Berdichevsky, Md-Tofiqul Islam
The paper is a review of Hashin–Shtrikman type bounds for effective moduli of conductivity and elasticity of polycrystals and composites written from the perspective of the variational principle for probabilistic measure. The results for such bounds are rederived in probabilistic terms. Remarkably, in probabilistic terms the Hashin–Shtrikman approach gets especially simple form. Besides, a clear distinction
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An approximate secular equation of Rayleigh-like waves in coated elastic half-space containing voids Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-16 Savkirat Kaur, Aarti Khurana, S.K. Tomar
Propagation of Rayleigh-like surface waves is studied in an isotropic elastic solid half-space coated with a thin isotropic elastic solid layer. The half-space and the thin coated layer are in welded contact with each other and contain a uniform distribution of small void pores. Effective boundary condition method is employed to derive an approximate secular equation of second-, third-, and fourth-orders
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Localisation of stress-affected chemical reactions in solids described by coupled mechanics-diffusion-reaction models Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-13 Michael Poluektov, Alexander B. Freidin
Chemical reactions in solids can induce chemical expansion of the solid that causes the emergence of the mechanical stresses, which, in turn, can affect the rate of the reaction. A typical example of this is the reaction of Si lithiation, where the stresses can inhibit the reaction up to the reaction locking. The reactions in solids can take place within some volume (bulk reactions) or localise at
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M-integral for finite anti-plane shear of a nonlinear elastic matrix with rigid inclusions Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-13 Victor A. Eremeyev, Konstantin Naumenko
The path-independent M-integral plays an important role in analysis of solids with inhomogeneities. However, the available applications are almost limited to linear-elastic or physically non-linear power law type materials under the assumption of infinitesimal strains. In this paper we formulate the M-integral for a class of hyperelastic solids undergoing finite anti-plane shear deformation. As an
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On wave propagation in nanobeams Int. J. Eng. Sci. (IF 6.6) Pub Date : 2024-01-06 Raffaele Barretta, Annalisa Iuorio, Raimondo Luciano, Marzia Sara Vaccaro
Wave propagation in Rayleigh nanobeams resting on nonlocal media is investigated in this paper. Small-scale structure-foundation problems are formulated according to a novel consistent nonlocal approach extending the special elastostatic analysis in Barretta et al. (2022). Nonlocal effects of the nanostructure are modelled according to a stress-driven integral law. External elasticity of the nano-foundation
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Surface–dislocation interaction by various models of surface elasticity Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-30 M.A. Grekov
The effect of applying different surface elasticity models related to the Gurtin–Murdoch and Steigmann–Ogden theories to the problem on an interaction of a dislocation row with a flat surface of a semi-infinite three-dimensional body is analyzed in the paper. The boundary conditions in the case of an arbitrary shape of a cylindrical surface under the plane strain are derived within the framework of
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A theoretical modelling of strengthening mechanism in graphene-metal nanolayered composites Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-21 Xing-wei Chen, Kun-kun Fu, Yan Li
Graphene-metal nanolayered composites (GMNCs) are a new generation of nano-structural composites characterized by a very high density of graphene reinforced interfaces (GRI) between metal nanolayers. Compared to traditional graphene flake reinforced composites, GMNCs have much higher strength, toughness and ductility due to the excellent ability of GRI on constraining dislocation motion and crack propagation
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How does the heterogeneous interface influence hydraulic fracturing? Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-23 Quan Wang, Hao Yu, WenLong Xu, HanWei Huang, FanDing Li, HengAn Wu
Under the influence of the nonlinear fluid-solid coupling, hydraulic fracture exhibits various propagation modes (such as toughness- or viscosity-dominated), which stem from the competition between the solid deformation and fluid flow. Based on the homogeneous assumption, the basic theoretical analysis has divided toughness and viscosity scales in the tip region. However, regarding more realistic and
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A New High-order Deformation Theory and Solution Procedure Based on Homogenized Strain Energy Density Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-20 Cao Yuheng, Zhang Chunyu, Wang Biao
The classical continuum mechanics faces difficulties in solving problems involving highly inhomogeneous deformations. The proposed theory investigates the impact of higher-order microscopic deformation on modeling of material behaviors and provides a refined interpretation of strain gradients through the homogenized strain energy density. Only one scale parameter, i.e., the size of the Representative
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Electro-mechanical actuation modulates fracture performance of soft dielectric elastomers Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-20 Miguel Angel Moreno-Mateos, Markus Mehnert, Paul Steinmann
Soft dielectric elastomers respond to electric stimuli by undergoing large deformations and changes in their material properties. The actuation with deformable electrodes attached to the material originates Coulomb and dipole forces that convert the electric field into a mechanical response. Applications at large deformations can entail crack onset and propagation. Within this context, the response
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On the ultimate strength of heterogeneous slender structures based on multi-scale stress decomposition Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-21 J. Orlik, D. Neusius, K. Steiner, M. Krier
This paper presents an algorithm based on asymptotic methods for computing the effective ultimate and high cyclic fatigue strength of heterogeneous periodic plates, shells, and textiles. The rigorous analysis and convergence proof of this asymptotic method builds upon a series of our previous papers. The method allows to decompose the local stresses as products of periodic stress-concentrations, given
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Constitutive relations for anisotropic porous solids undergoing small strains whose material moduli depend on the density and the pressure Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-19 K.R. Rajagopal, R. Bustamante
Recently, Arumugam et al. (2023) developed a constitutive relation for the response of isotropic inhomogeneous compressible elastic solids in order to describe the response of the trabecular bone. Since porous solids such as bones, cement concrete, rocks, metallic alloys, etc., are anisotropic, in this short note we develop a constitutive relation for such bodies that exhibit transverse isotropy and
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Modeling pull-in instability of CNT nanotweezers under electrostatic and van der Waals attractions based on the nonlocal theory of elasticity Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-22 Gennadi Mikhasev, Enrico Radi, Vyacheslav Misnik
This work investigates the electromechanical response and pull-in instability of an electrostatically-actuated CNT tweezer taking into consideration a TPNL constitutive behavior of the CNTs as well as the intermolecular forces, both of which provide a significant contribution at the nanoscale. The nonlocal response of the material introduces two additional parameters in the formulation, which are effective
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Review on mechanics of fluid-conveying nanotubes Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-18 Qiduo Jin, Yiru Ren
Fluid-conveying nanotubes have become important components of nanoelectromechanical systems (NEMS) working in fluid environments, exciting extensive research on the dynamics of flow-conveying nanotubes. This paper systematically reviews the research progress of mechanics of fluid-conveying nanotubes from several aspects, including tube displacement field, non-classical continuum theory models, modeling
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A phase field fracture model for ultra-thin micro-/nano-films with surface effects Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-14 Peidong Li, Weidong Li, Yu Tan, Haidong Fan, Qingyuan Wang
Surface effects usually remarkably affect the mechanical response of ultra-thin micro-/nano-structures. However, the mechanisms of surface effects on the fracture characteristics of ultra-thin films are still not fully understood. To this end, this paper develops a modeling framework to investigate the fracture of ultra-thin films at microscales or below. Such a framework couples the Gurtin–Murdoch
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Multiscale analysis of a 3D fibrous collagen tissue Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-14 D. Orlova, I. Berinskii
Collagen fibers, a primary structural protein in the extracellular matrix, provides essential scaffolding for tissues. Functionally, these fibers are essential for providing mechanical support, ensuring tissues like tendons effectively transfer force from muscles to bones. Moreover, collagen is a dynamic component that plays a crucial role in mediating cell signaling, influencing various cellular behaviors
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Local and global dynamics of a functionally graded dielectric elastomer plate Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-14 Amin Alibakhshi, Sasan Rahmanian, Michel Destrade, Giuseppe Zurlo
We investigate the nonlinear vibrations of a functionally graded dielectric elastomer plate subjected to electromechanical loads. We focus on local and global dynamics in the system. We employ the Gent strain energy function to model the dielectric elastomer. The functionally graded parameters are the shear modulus, mass density, and permittivity of the elastomer, which are formulated by a common through-thickness
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Hyperelastic constitutive relations for soft elastomers with thermally-induced residual stress Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-04 Weiting Chen, Ya-Pu Zhao
Residual stress widely exists in soft materials. Besides growth, inhomogeneous thermal expansion is also a primary cause of residual stress. However, establishing a proper hyperelastic constitutive relation is a great challenge since the existing theories cannot capture the change of underlying mechanical responses triggered by temperature variations. In this paper, a general hyperelastic constitutive
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On shear-dependent vibration of nano frames Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-03 Hayri Metin Numanoğlu, Ömer Civalek
In this study, the effect of shear deformation on the atomic size-dependent free vibration of nanoframes is investigated. The equations of motion of axial and bending vibrations are obtained via the variational algebra according to nonlocal elasticity theory. Axial and bending behaviors are expressed by using simple rod theory and first-order shear deformation beam theory, respectively. By combining
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Corrigendum: New classes of electro-elastic and thermo-electro-elastic bodies that are not Green elastic: [International Journal of Engineering Science, 152 (2020) 103308] Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-12-02 Roger Bustamante
Some errors are corrected in some expressions for constitutive relations, where the Cauchy stress tensor is one of the main variables.
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Osmotically driven beading instability in axons: Continuum theory, perturbation analysis and finite element implementation Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-30 Mohammad Dehghany, Reza Naghdabadi, Saeed Sohrabpour, Yunlong Li, Yuhang Hu
Axonal beading or formation of multiple beads along an axon is characteristic of many brain pathological states like Alzheimer's, Parkinson's and traumatic injuries. Despite the many existing experimental studies, the underlying mechanisms of this shape instability remain still poorly understood. In this paper, we establish a combined theoretical and numerical framework to study the governing key factors
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Smart electro-magneto-viscoelastomer minimum energy structures with particle-reinforcements: Theoretical equilibrium and nonlinear dynamics of actuated configurations Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-28 A. Khurana, S. Naskar, R.K. Varma, T. Mukhopadhyay
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Self-buckling with initial imperfections: Application to trees Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-23 Tohya Kanahama, Motohiro Sato
In most structural systems, initial imperfections, such as initial deflection, is an unavoidable challenge, and it significantly influences buckling. This study aimed to theoretically explain the effect of initial deflection and initial slope on self-buckling characteristics of heavy columns subjected to self-weight. Specifically, we examined cantilevers composed of isotropic material with a constant
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Two-dimensional problem of an infinite matrix reinforced with a Steigmann–Ogden cylindrical surface of circular arc cross-section Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-22 Zhilin Han, Anna Y. Zemlyanova, Sofia G. Mogilevskaya
The plane strain problem of an elastic matrix subjected to uniform far-field load and containing a Steigmann–Ogden material surface with circular arc cross-section is considered. The governing equations and the boundary conditions for the problem are reviewed. Exact complex integral representations for the elastic fields everywhere in the material are provided. The problem is further reduced to the
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Numerical investigation on tornado-like flows and immersed bodies using vortex models Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-18 Miguel A. Aguirre, Alexandre L. Braun, Armando M. Awruch
A numerical investigation to evaluate tornado flows with immersed bodies is presented in this work, where vortex profile models are adopted to generate the flow field based on time-dependent boundary conditions. In order to reproduce flow conditions obtained from field data and experimental analyses, a parametric study is performed considering the main model parameters influencing the tornado flow
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On Poro-hyperelastic Torsion Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-19 APS Selvadurai, Alexander P. Suvorov
The paper examines the torsion of a solid cylinder composed of a fluid-saturated porous medium with a hyperelastic porous skeleton. The general formulation of the problem is followed with applications to special cases where the strain energy function for the skeletal behavior is described by either a neoHookean or an Ogden-type hyperelastic behavior. The analytical developments involve the numerical
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Hidden ring crack in a rotating hollow cylinder under torsion Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-20 Zinaida Zhuravlova, Igor Istenes, Daniel Peck, Yuriy Protserov, Nataly Vaysfeld
We consider the impact of a ring crack within a rotating hollow cylinder of fixed height under axisymmetric (torsion) loading. The form of the displacement is obtained from the equation of motion using the Fourier sin transform. The displacement jump over the crack is obtained from the boundary condition on the tangential stress, formulated as a singular integral equation which is solved by the method
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Dynamic stability of the sandwich nano-beam system Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-15 Dunja Milić, Jian Deng, Vladimir Stojanović, Marko D. Petković
This article explores the stochastic stability of a three nanobeam system connected by Kerr type elastic layer, subjected to the magnetic effects and compressive axial forces. While considering nano beams rotary inertia is taken into account and differential equations of nanobeams are given according to Eringen's nonlocal elasticity theory. The impact of a longitudinal magnetic field on the behavior
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WKB analysis of the bifurcation for a three-dimensional neo-Hookean cylindrical tube under restricted compression Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-15 M. Sanjaranipour, N. Abdolalian
We study the bifurcation of a three-dimensional neo-Hookean elastic cylindrical tube under axial compression, where the movement of the outer surface is restricted. For the first time, the WKB method is applied to the three-dimensional eigenvalue problem and the bifurcation conditions are calculated for thick and thin-walled cylinders, separately. In this paper, two WKB expansions are considered for
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Weakened interfaces in Cosserat bi-materials with constrained rotation Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-08 Marinos Kattis, Vassilis Tsitsos, Vassilis Karatzaferis
A continuum mechanics–based model is proposed to describe the mechanical behavior of a weakened interface lying between materials with microstructure. The weakened interface is simulated by a surface elastic medium adhering on either side with bulk elastic continua exhibiting behavior of Cosserat materials with constrained rotation. Under general frame invariance considerations, it is shown that the
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Modeling of the thermal softening of metals under impact loads and their temperature–time correspondence Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-06 Shixiang Zhao, Yu. V. Petrov, Yuyi Zhang, G.A. Volkov, Zejian Xu, Fenglei Huang
The thermal softening related to the stress relaxation, i.e. a reduction in the internal resistance to deformation, due to the increasing bulk temperature is theoretically studied using the incubation time approach. The plastic deformation at high-loading rates is often accompanied by an obvious adiabatic temperature rise. Phenomenological constitutive models describing these thermo-mechanical responses
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Effects of the orientation distribution of thin soft inclusions on the effective elastic moduli of microheterogeneous material Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-11-03 Anatoly Markov, Valery Levin, Mikhail Markov
Many natural composite materials such as carbonate rocks contain systems of oriented or partially oriented thin inclusions (microcracks) filled with a soft elastic cement. In this paper we have studied the influence of the inclusion orientation, shape, and elastic properties on the effective elastic properties of micro-inhomogeneous materials. We have calculated the components of the compliance tensor
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Can we really solve an arch stability problem? Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-10-31 Jacek Chróścielewski, Victor A. Eremeyev
We bring attention to the problem of solving nonlinear boundary-value problems for elastic structures such as arches and shells. Here we discuss a classical problem of a shear-deformable arch postbuckling. Considering a postbuckling behaviour of a circular arch we discuss the possibility to find numerically a solution for highly nonlinear regimes. The main attention is paid to the problem of determination
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Transient scattering of a Rayleigh wave by a cluster of subwavelength resonators—Towards asymptotic modeling of seismic surface metabarriers Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-10-13 Ivan I. Argatov, Federico J. Sabina
A seismic metabarrier (intended for surface waves mitigation effect) is modeled as a cluster of single-degree-of-freedom resonator units deposited on the surface of an isotropic homogeneous elastic half-space. It is assumed that each resonator has a frictionless flat rigid base of diameter much smaller than the wavelength of an incoming surface wave. The slow-motions asymptotic method is applied for
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Radially transverse isotropic inclusions in isotropic conductive media: Local fields, effective properties, neutral inclusions Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-10-12 S. Kanaun
Spherical radially transverse isotropic heterogeneous inclusions in homogeneous isotropic conductive host media are considered. The volume integral equation for the field in the medium with an isolated inclusion subjected to a constant external field is solved using Mellin-transform technique. The method allows revealing tensor structure of the solution with precision to one scalar function of radial
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Misfit stress and energy in composite nanowire with polygonal core Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-09-30 S.A. Krasnitckii, A.M. Smirnov, M. Yu. Gutkin
In this article we present for the first time an analytical solution to the boundary-value problem in the classical theory of elasticity for a core-shell cylinder with an eccentric prismatic core having a trapezoidal cross section and subjected to uniform dilatation eigenstrain. In doing so, we represent the trapezoidal prism as a superposition of long straight dilatational lines located along the
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Influence of nonlocal elasticity tensor and flexoelectricity in a rod: An asymptotic homogenization approach Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-09-27 David Guinovart-Sanjuán, Ram Mohapatra, Reinaldo Rodríguez-Ramos, Yoanh Espinosa-Almeyda, Panters Rodríguez-Bermúdez
This paper presents a methodology based on the asymptotic homogenization method (AHM) to model flexoelectric composites with nonlocal elasticity. The nonlocal elasticity tensor accounts for the long-range interactions between the strain gradient and the electric field, which affect the effective flexoelectric coefficients and the composite’s overall response. The local problems, the general expression
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Dimensional analysis of magnetophoresis Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-09-21 Won-Seok Heo, Steven W. Hetts, Vitaliy L. Rayz
Magnetophoresis is used in various applications requiring selective collection of magnetic particles. This study is aimed at quantitatively describing magnetophoretic systems via dimensional analysis to assess the relative contribution of hydrodynamics, electromagnetism, and particle dynamics. We introduce dimensionless numbers characterizing the transport of magnetic particles in a fluid. Analytical
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A size-dependent quasi-3D model for bending and buckling of porous functionally graded curved nanobeam Int. J. Eng. Sci. (IF 6.6) Pub Date : 2023-09-22 Shuo Wang, Wenxuan Ding, Zefu Li, Bohao Xu, Chenbo Zhai, Wenbin Kang, Weidong Yang, Yan Li
In this work, we provide an analysis of the bending and buckling properties of functionally graded (FG) nanobeams with trigonometric function-dependent porosity distribution. Herein, a high-order curved nanobeam model considering both shear deformations and thickness stretching effect is established. Two-phase local/nonlocal stress-driven gradient theory is utilized to capture small-scale effects.