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Integral micromorphic model reproducing dispersion in 1D continuum Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-09-16 Michal Šmejkal, Milan Jirásek, Martin Horák
The paper develops a new integral micromorphic elastic continuum model, which can describe dispersion properties of band-gap metamaterials, i.e., metamaterials that inhibit propagation of waves in a certain frequency range. The enrichment consists in nonlocal treatment of three terms in the expression for the potential energy density of the standard micromorphic continuum. After proper calibration
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Interfacial performance evolution of ceramics-in-polymer composite electrolyte in solid-state lithium metal batteries Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-09-01 Ao Cheng, Linlin Sun, Nicola Menga, Wanyou Yang, Xin Zhang
The incorporation of ceramics into polymers, forming solid composite electrolytes (SCEs) leads to enhanced electrical performance of all-solid-state lithium metal batteries. This is because the dispersed ceramics particles increase the ionic conductivity, while the polymer matrix leads to better contact performance between the electrolyte and the electrode. In this study, we present a model, based
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On effective surface elastic moduli for microstructured strongly anisotropic coatings Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-30 Victor A. Eremeyev, Giuseppe Rosi, Salah Naili
The determination of surface elastic moduli is discussed in the context of a recently proposed strongly anisotropic surface elasticity model. The aim of the model was to describe deformations of solids with thin elastic coatings associated with so-called hyperbolic metasurfaces. These metasurfaces can exhibit a quite unusual behaviour and concurrently a very promising wave propagation behaviour. In
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Fracture properties of green nano fibrous network with random and aligned fiber distribution: A hierarchical molecular dynamics and peridynamics approach Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-24 Razie Izadi, Raj Das, Nicholas Fantuzzi, Patrizia Trovalusci
Polylactic acid (PLA) nanofibrous networks have gained substantial interest across various engineering and scientific disciplines, such as tissue engineering, drug delivery, and filtration, due to their unique and multifunctional attributes, including biodegradability, tuneable mechanical properties, and surface functionality. However, predicting their mechanical behaviour remains challenging due to
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Quantum-informed simulations for mechanics of materials: DFTB+MBD framework Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-16 Zhaoxiang Shen, Raúl I. Sosa, Stéphane P.A. Bordas, Alexandre Tkatchenko, Jakub Lengiewicz
The macroscopic behaviors of materials are determined by interactions that occur at multiple lengths and time scales. Depending on the application, describing, predicting, and understanding these behaviors may require models that rely on insights from atomic and electronic scales. In such cases, classical simplified approximations at those scales are insufficient, and quantum-based modeling is required
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Non-standard interface conditions in flexure of mixture unified gradient Nanobeams Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-14 S. Ali Faghidian, Hossein Darban
Structural schemes of applicative interests in Engineering Science frequently encounter the intricate phenomenon of discontinuity. The present study intends to address the discontinuity in the flexure of elastic nanobeam by adopting an abstract variational scheme. The mixture unified gradient theory of elasticity is invoked to realize the size-effects at the ultra-small scale. The consistent form of
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Nanocomposites with cylindrical/rectangular/spherical/ellipsoidal reinforcements: Generalized continuum mechanics Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-08 Maziar Janghorban
Nanocomposites can show different properties according to the type of reinforcements they have. In this article, a model for the study of nanocomposites is examined, which is able to examine all nanocomposites with elliptical, cylindrical, spherical and rectangular reinforcements. Also, in this model, unlike some other models, the effects of interphase section are included. The results obtained from
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A digital-twin for rapid simulation of modular Direct Air Capture systems Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-08 T.I. Zohdi
There has been tremendous recent interest in Direct Air Capture (DAC) systems. A key part of any DAC system are the multiple air intake units. In particular, the arrangement of such units for optimal capture and sequestration is critical. Accordingly, this work develops an easy to use model for a modular unit system, where an approximate flow field is computed for each unit and the aggregate flow field
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Multiphase thermo-hydro-mechanical coupled soil drying model with phase-exchange based on mixture coupling theory Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-03 Andrea Sendula, Kai Wang, Shashank B. Subramanyam, Jake Cray, Matthew Oram, Xiaohui Chen, Ana Heitor, David Harbottle, Kenny Brown
The drying phenomenon in soils involves complex interactions between thermal, hydrological, and mechanical effects within a multiphase system. While several researches (both mechanics and mixture theory approach) has been applied to study various thermo-hydro-mechanical (THM) coupled processes in porous media, incorporating both multiphase flow and phase change in soil drying remains limited. This
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Extended Stroh formalism for plane problems of thermoelasticity of quasicrystals with applications to Green’s functions and fracture mechanics Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-02 Viktoriya Pasternak, Heorhiy Sulym, Iaroslav M. Pasternak, Ihor Hotsyk
The paper proposes a transparent and compact form of constitutive and equilibrium relations for the plane thermoelasticity of quasicrystal solids. The symmetry and positive definiteness of the obtained extended tensors of material constants are studied. An extension of the Stroh formalism is proposed for solving plane problems of thermoelasticity for quasicrystals. It is proved that the eigenvalues
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Anisotropic effect of regular particle distribution in elastic–plastic composites: The modified tangent cluster model and numerical homogenization Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-08-02 K. Bieniek, M. Majewski, P. Hołobut, K. Kowalczyk-Gajewska
Estimation of macroscopic properties of heterogeneous materials has always posed significant problems. Procedures based on numerical homogenization, although very flexible, consume a lot of time and computing power. Thus, many attempts have been made to develop analytical models that could provide robust and computationally efficient tools for this purpose. The goal of this paper is to develop a reliable
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The theory of scaled electromechanics Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-07-29 Keith Davey, Mohd Izzat Abd Malek, Zainab Ali, Hamed Sadeghi, Rooholamin Darvizeh
A new scaling theory called finite similitude has appeared in the open literature for the scaling of physical systems. The theory is founded on the metaphysical concept of and consequently can in principle be applied to all physics. With regard to the application of the theory to multi-physics however, an obstacle is dissimilar mathematical formulations, that are preferred and applied in practice.
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On application of a surrogate model to numerical evaluation of effective elastic properties of composites with 3D rotationally symmetric particles Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-07-29 Pascal Alexander Happ, Igor Tsukrov, Romana Piat
Micromechanical modelling of particulate composites with non-ellipsoidal particle shapes presents significant challenges because analytical approaches based on the fundamental results of Eshelby cannot be used. On the other side, direct numerical evaluations by finite element analysis can involve high computational cost in the case when particle features have small radius of curvature, sharp edges
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Dynamics of graphene origami-enabled auxetic metamaterial beams via various shear deformation theories Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-07-27 Behrouz Karami, Mergen H. Ghayesh
Although auxetic metamaterials exhibit unique and unusual mechanical properties, such as a negative Poisson's ratio, their mechanics remains poorly understood. In this study, we model a graded beam fabricated from graphene origami-enabled auxetic metamaterials and investigate its dynamics from the perspective of different shear deformation theories. The auxetic metamaterial beam is composed of multiple
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Three-dimensional model for cyclic, rate-independent and compressible response of aluminium Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-06-20 Lakshmanan Manimaran, U. Saravanan
A three-dimensional rate-independent framework consistent with thermodynamics is presented to study the dissipative response of metals. The entropy inequality is transformed into equality by introducing a non-negative, continuous rate of dissipation function. The constitutive relation that relates the Hencky strain and Cauchy stress is parametrized by replacement stress, instead of the plastic strain
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A neat flux-based weak formulation for thermal problems which develops Biot’s variational principle Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-06-20 Ali Haydar, Laura Galuppi, Gianni Royer-Carfagni
We propose a weak form of the transient heat equations for solid bodies, as a time-dependent spatial variation of the heat displacement vector field, whose time derivative is the heat flux. This develops the variational principle originally proposed by Biot, inasmuch Fourier’s law is embedded as a holonomic constraint, while energy conservation results from the variation (the vice-versa from Biot)
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Dynamic modeling and simulation of hard-magnetic soft beams interacting with environment via high-order finite elements of ANCF Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-06-20 Yancong Wang, Yifan Qin, Kai Luo, Qiang Tian, Haiyan Hu
Hard-magnetic soft (HMS) beams made of soft polymer matrix embedded with hard-magnetic particles can generate large and fast deformation under magnetic stimulation. Dynamic modeling and simulation of HMS beams interacting with complex environment are challenging in terms of computational accuracy and efficiency. This paper presents a method for high-order modeling and efficient computation of HMS beams
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Swelling-driven mechanics of partially cross-linked polymer gels: Steady state solutions Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-06-20 Paola Nardinocchi, Siddhartha H. Ommi, Giulio Sciarra
The study aims to investigate how the mechanics of swelling of a polymer gel is affected by the presence of free-chains due to a partial cross-linking process. The analysis is focused on the equilibrium solution of the mechano-diffusion problem under different states, corresponding to different polymer network fractions before diffusion starts. The limit situations of perfectly cross-linked polymer
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Fluid–structure numerical solver for axi-symmetric flows with Navier’s slip interface condition between the viscoelastic solid and the Navier–Stokes fluid: Effects of deformable solids on the flow characteristics Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-31 J. Fara, J. Hron, J. Málek, K.R. Rajagopal, K. Tůma
Flows of an incompressible Navier–Stokes fluid are frequently assumed to take place in domains whose boundaries are rigid and that the fluid adheres to them, i.e. there is the “no-slip” on the interface between the rigid solid and the flowing fluid. However, in many interesting problems the walls respond as (visco)-elastic structures and different slipping conditions on the fluid–structure interface
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Microbuckling prediction of soft viscoelastic composites by the finite strain HFGMC micromechanics Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-28 Jacob Aboudi, Rivka Gilat
A perturbation expansion is offered for the micromechanical prediction of the bifurcation buckling of soft viscoelastic composites with imperfections (e.g. wavy fibers). The composites of periodic microstructure are subjected to compressive loading and are undergoing large deformations. The perturbation expansion applied on the imperfect composites results in a zero and first order problems of perfect
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Modeling and experimental analysis of piezoresistive behavior in conductive porous elastomer under significantly large deformation Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-25 Jianpeng Zhang, Song Wei, Chao Shang, Yu Duan, Zhaoqiang He, Hua An, Xinge Yu, Zhengchun Peng
Piezoresistive porous elastomers () are gaining attention in the field of flexible electronics due to their unique properties including ultra softness, ultra lightness, and high sensitivity. These properties can be precisely adjusted through advanced material synthesis and micro/nanofabrication technologies that control the size, shape, and composition of the functional nanoparticles. Despite various
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Thermo-electro-mechanical vibration analysis for piezoelectric plates under two-parameter elastic foundation with general boundary conditions Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-22 Dongze He, Weicheng Li, Vahid Vaziri, Sumeet S. Aphale
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Near-wall flow deconstruction via mapping and polynomial fit Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-21 Vahid Goodarzi Ardakani, Alberto M. Gambaruto
A mapping technique for enhancing the visualisation and analysis of the flow structure in regions near the wall is presented. After identifying a near-wall region of interest, the output of the proposed mapping technique is an analytical expression of the flow variables, satisfying the governing PDEs and boundary conditions, on a stencil of standardised morphology.
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A homogenization method incorporating surface effect for thin metamaterial structure Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-20 Shuo Li, Li Li
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A pseudoelastic response of hyperelastic composites reinforced with nonlinear elastic fibrous materials: Continuum modeling and analysis Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-17 Mahdi Zeidi, Suprabha Islam, Chul B. Park, Chun Il Kim
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Representing implicit elasticity from a residually stressed reference Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-17 Soumya Mukherjee
Implicit elasticity presents the general response of materials without imposing assumptions at the fundamental level. A popular implausible assumption of continuum mechanics is that the reference configuration is stress-free, since residual stress is ubiquitous in Nature. This paper develops large and small deformation implicit elasticity frameworks using residually stressed reference configurations
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Adhesive sliding with a nominal point contact: Postpredictive analysis Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-16 I.I. Argatov, I.A. Lyashenko, V.L. Popov
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On a class of implicit constitutive relations for nonlinear elastic bodies Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-13 M.H.B.M. Shariff, R. Bustamante
If an elastic body is defined as one that does not dissipate energy into heat, the classes of elastic bodies not only include the Green elastic solid, but also some types of implicit constitutive relations recently presented in the literature. In this paper one of such new implicit relations is studied in detail, wherein the energy function depend on the second Piola–Kirchhoff stress tensor and the
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Does the conventional reciprocal theorem break down in strain gradient elasticity? Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-08 Xiao-Jian Xu, Zi-Chen Deng
The force method and displacement method on the basis of the reciprocal theorem play an important role in the field of structural mechanics and have been successfully applied in structural mechanics. However, it is interestingly found that the unexpected paradox exists when the authors attempt to apply it to problems of deformations of strain gradient beams. The reciprocal relation between higher order
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Radially transverse isotropic inclusions in isotropic elastic media: Local fields, neutral inclusions, effective elastic properties Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-05-07 S. Kanaun
Radially transverse isotropic inclusions in homogeneous isotropic elastic host media are considered. Mellin transform method is used for solution of the volume integral equation of the problem for an isolated inclusion subjected to a constant external stress (strain) field. The tensor structure of the solution is revealed with precision to three scalar functions of the radial coordinate, and the system
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On nonlinear buckling of microshells Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-04-26 Sayed Mohamad Mirfatah, Mohammad Amin Shahmohammadi, Hamzeh Salehipour, Ömer Civalek
Investigation of the geometrical nonlinear action of doubly curved shell panels (DCSPs) in micro scale is the main target of this paper. The proposed microshell panels (MSPs) are assumed to be made of an auxetic honeycomb core (AHOC), leading to negative magnitudes of Poisson's ratio, covered by two nanocomposite enriched coating layers (NCECLs). To conduct the size-dependent nonlinear analysis and
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Morphological stability of electrostrictive thin films Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-04-24 Jin Zhang, Peter W. Voorhees
A large electric field is typically present in anodic or passive oxide films. Stresses induced by such a large electric field are critical in understanding the breakdown mechanism of thin oxide films and improving their corrosion resistance. In this work, we consider electromechanical coupling through the electrostrictive effect. A continuum model incorporating lattice misfit and electric field-induced
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Buckling of a stretched nanoplate with a nanohole incorporating surface energy Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-04-20 M.A. Grekov, A.O. Bochkarev
The effect of a nanoplate buckling at a circular nanohole under the remote uniaxial tension is studied incorporating the surface energy in accordance with the Gurtin–Murdoch surface elasticity model. The hole surface within the framework of the plane problem and the faces of the plate within the framework of the Kirchhoff theory of the plate bending are characterized by both the surface elasticity
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Viscoplastic flows in channels with small aspect ratio: Bingham versus regularised models Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-04-20 A. Farina, L. Fusi, L. Vergori, E.M. Zanetti
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Minimum horizontal stress in an inelastic fluid-saturated reservoir and a constitutive instability development during fluid production Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-04-17 Igor Garagash, Evgenii Kanin, Andrei Osiptsov
We investigate the impact of fluid drainage on the stress–strain state of a fluid–saturated reservoir. Our focus is on the transition from an elastic to an elastoplastic state of the rock mass and the appearance of constitutive instability during plastic yield. We determine the onset of inelastic deformations using the Drucker–Prager yield criterion and Eaton’s solution for an elastic medium. Our findings
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Can riot-control water cannon be lethal? Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-03-30 Yinze Lei, Jing Xie, Zu'an Wang, María González-García, Pengwan Chen, Daniel Rittel
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Nonlinear biomechanics of diseased carotid arteries Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-03-26 Kaveh Moghadasi, Mergen H. Ghayesh, Eric Hu, Jiawen Li
The aim of this article is to analyse the nonlinear biomechanics of diseased carotid arteries as a potential tool for predicting the onset of cerebral strokes. A two-way coupled three-dimensional (3D) hyperelastic fluid-structure interaction (FSI) analysis of a diseased carotid artery with abnormal luminal projections at the carotid bulb known as carotid web (CaW) is conducted on the geometry of a
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On the effective properties of random microstructures and cross-property connections for them Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-03-25 Damian Stefaniuk, Mark Kachanov
Effective elastic and conductive properties of 2-D random (“disordered”) mixtures of several types are examined by computational means. It is found that an “equivalent” material of simple microgeometry – a continuous matrix with elliptical inhomogeneities – can be identified, that matches the elastic and the conductive properties, in the entire range of property contrast between constituents. Moreover
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Study of nanotube waviness influence on the behaviors of spherical nanocomposites Int. J. Eng. Sci. (IF 5.7) Pub Date : 2024-03-25 Maziar Janghorban, Timon Rabczuk
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Joint micromechanical model for determination of effective elastic and electromagnetic properties of porous materials Int. J. Eng. Sci. (IF 5.7) 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 5.7) 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 5.7) Pub Date : 2024-03-12 Mohammad Malikan
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Elastostatics of nonuniform miniaturized beams: Explicit solutions through a nonlocal transfer matrix formulation Int. J. Eng. Sci. (IF 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) Pub Date : 2024-02-20 Raffaele Barretta, Raimondo Luciano, Francesco Marotti de Sciarra, Marzia Sara Vaccaro
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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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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 5.7) 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