Skip to main content

Acta Mechanica OnlineFirst articles

15.05.2024 | Original Paper

Bernstein polynomials in analyzing nonlinear forced vibration of curved fractional viscoelastic beam with viscoelastic boundaries

In this paper, an effective numerical Bernstein polynomials operational matrix is exploited to study the nonlinear forced vibration of fractional viscoelastic curved beam with viscoelastic nonlinear boundary conditions, for the first time. The …

verfasst von:
N. Mohamed, M. A. Eltaher, S. A. Mohamed, Erasmo Carrera

13.05.2024 | Original Paper

Assessment of second Piola–Kirchhoff and Cauchy stress tensors in finite rotation sandwich and laminated shells under non-conservative pressure loads

In this paper, the stress fields in nonlinear sandwich and laminated composite shells subjected to displacement-dependent loads are analyzed. To solve the problem, the geometrically exact (GeX) hybrid-mixed four-node solid-shell element is …

verfasst von:
G. M. Kulikov, S. V. Plotnikova, A. A. Mamontov

11.05.2024 | Original Paper

Energy absorption properties of a novel auxetic honeycomb based on deep learning technology

In this paper, a new type of auxetic honeycomb is designed, which introduces arc walls into the concave hexagonal honeycomb cells and has higher specific energy absorption. The deformation modes and energy absorption of the designed honeycomb are …

verfasst von:
Junhua Zhang, Pei Ma

09.05.2024 | Original Paper

Bending behaviour of steel–concrete composite beam with partial shear interface using MCS and ANN

A one-dimensional Co finite element model (FEM) based on cubic-order beam theory in conjunction with the artificial neural network–genetic algorithm (ANN–GA) and artificial neural network–grey wolf optimization (ANN–GWO) metamodels has been …

verfasst von:
Prashant Kumar, Ajay Kumar, Sanjay Kumar, Raushan Ranjan, Pranav Kumar

09.05.2024 | Original Paper

Basic nanoconvective flow for transient hot wire experimental method

An investigation of the basic nanoconvective flow to be applied in evaluating the limit of validity of the transient hot wire experimental (THW) method for nanofluids is presented. Analytical solutions for the basic temperature, basic …

verfasst von:
Peter Vadasz, Florinda Capone, Roberta De Luca

08.05.2024 | Original Paper

Impact of material distribution on the dynamic response of a bidirectional FG beam under general boundary conditions and supported by nonlinear substrate

The present work aims to investigate the dynamic behavior of a bidirectional functionally graded (BDFG) beam lying on nonlinear elastic substrate tacking into account the impact of the material distribution. For the first time, this effect will be …

verfasst von:
Brahim Laoud, Samir Benyoucef, Attia Bachiri, Fouad Bourada, Abdelouahed Tounsi, Murat Yaylacı, Mohamed Abdelaziz Salem, Khaled Mohamed Khedher

04.05.2024 | Original Paper

Quantifying uncertainty in free vibration characteristics of nanobeam with one variable first-order shear deformation theory: an analytical investigation

This research investigates uncertainty quantification in nanobeam vibration by integrating the one-variable first-order shear deformation beam theory with Eringen’s nonlocal elasticity theory. Material uncertainties associated with mass density …

verfasst von:
Subrat Kumar Jena, S. Pradyumna, S. Chakraverty

Open Access 04.05.2024 | Original Paper

Advancements in Continuum Mechanics and Electrodynamics by a spacetime geometric approach

Results achieved by the authors in the course of research activity on continuum mechanics and electrodynamics (CME) during the past twenty years are illustrated, revised and discussed. Adoption of a geometric approach leads to renewal of concepts …

verfasst von:
Giovanni Romano, Raffaele Barretta

02.05.2024 | Original Paper

Bg waves in a piezo–flexo-magnetic layered model with impedance boundary and imperfect interface

This work analyzes the propagation of BG wave in a layered model composed of a piezo-flexo-magnetic (PFM) layer of finite width imperfectly bonded to a PFM half-space with consideration of impedance boundary at the free surface of layer. The …

verfasst von:
Sonam Singh, A. K. Singh

30.04.2024 | Original Paper

Deformation in a micropolar material under the influence of Hall current and initial stress fields in the context of a double-temperature thermoelastic theory involving phase lag and higher orders

This work aims to propose a generalized micropolar thermoelastic model for the study of semisolid space. Essentially, it is intended to develop the generalized theory of thermoelasticity combined with the framework of a linear two-temperature …

verfasst von:
Ahmed E. Abouelregal, Ali F. Rashid

27.04.2024 | Original Paper

Nonlocal stability of curved carbon nanotubes conveying fluid based on Eringen’s nonlocal elasticity theory in a thermomagnetic environment

Curved carbon nanotubes (CCNT) can exhibit both in-plane and out-of-plane vibrations, and their curvature can give rise to additional vibrational modes. The vibrational modes of CCNT can be influenced by various factors, including diameter …

verfasst von:
Hossein Ramezani, Majid Haji Ali Koohpayeh, Alireza Tajedini, Ghazaleh Ramezani, Amirhossein Mohseni

27.04.2024 | Original Paper

On the initial boundary value problem for the propagating chemical reaction front in an elastic solid

The paper is concerned with the study of a chemical reaction between diffusing and solid constituents. The reaction is localized at a propagating reaction front and is accompanied by a transformation strain, which generates stresses affecting the …

verfasst von:
Alexander B. Freidin, Ilya A. Rublev, Igor K. Korolev

26.04.2024 | Original Paper

New expanding cavity model for conical indentation and its application to determine an intrinsic length scale of polymeric materials

New expanding spherical cavity model (ECM) for conical indentation is proposed. For polymeric materials description, the model incorporates isotropic non-monotonic strain hardening. For capturing the indentation size effect (ISE), the model …

verfasst von:
Georgiy M. Sevastyanov

26.04.2024 | Original Paper

On the coupled linear theory of thermoviscoelasticity of porous materials

In this paper, the coupled linear theory of thermoviscoelasticity for porous materials is considered in which the coupled phenomenon of the following four mechanical principles is proposed: the deformation of the skeleton of a porous solid, the …

verfasst von:
Maia M. Svanadze

23.04.2024 | Original Paper

Dynamic response of electrical contact resistance (ECR) under structural vibration

Many types of electrical connectors are used in traditional and emerging technology sectors such as electric vehicles, traditional automobiles, and aircraft, in which they need to maintain a stable and low electrical contact resistance (ECR).

verfasst von:
Benjamin T. Dankesreiter, Sujoy Talukder, Chang-Dong Yeo, Robert J. Kuether

20.04.2024 | Original Paper

Investigation on energy harvesting using bandgaps of periodic acoustic black hole structure

This paper introduces a structural design which has superior energy harvesting ability. The proposed structure is based on the ability of most periodic structures to prohibit elastic waves from propagating in a specific frequency range of the …

verfasst von:
Lu Yan, Qian Ding

18.04.2024 | Original Paper

Micropolar viscoelastic nanostructures subjected to laser-induced heat flux using the modified higher-order thermoelasticity model incorporating phase delay effects

The gap between classical continuity and nanomechanics can be bridged using the concept of nonlocal elasticity. The Voigt viscoelastic model and the generalized dual-phase thermoelastic micropolar framework (DPL) are considered. Also, higher-order …

verfasst von:
Ahmed E. Abouelregal, Mohamed E. Nasr, Usama Muaz, Mohamed Abouhawwash, Khalil M. Khalil

18.04.2024 | Original Paper

On the thermoelastic model of real materials with relaxation dynamics of defects

It is shown that the conventional theory of thermoelasticity is insufficient to explain the behavior of pulsed laser ultrasonic signals from materials with defects. A theoretical model of thermoelasticity is proposed that takes into account the …

verfasst von:
Nikita F. Morozov, Dmitry A. Indeitsev, Kirill L. Muratikov, Boris N. Semenov, Dmitry S. Vavilov, Aleksey A. Kudryavtsev

18.04.2024 | Original Paper

An optimized differential evolution algorithm for constitutive model fitting of arteries

The mechanical properties of arteries are often assessed with biaxial testing. Constitutive models are fitted to the experimental stress-stretch responses to determine relations describing the intrinsic characteristics of the material. Nonlinear …

verfasst von:
Sayed Ahmadreza Razian, Majid Jadidi

18.04.2024 | Original Paper

Generalized thermoelastic damping model for small-scale beams with circular cross section in the framework of nonlocal dual-phase-lag heat equation

In light of the certainty of size effect on heat conduction process in extremely small dimensions, the present article seeks to introduce a new theoretical framework for thermoelastic damping (TED) in micro-/nanobeam resonators with circular cross …

verfasst von:
Fatma Zohra Saidoune, M. Y. Turabi Ahmad, Eyhab Ali, Abdul Nasser Mahmood Fatah, Anaheed Hussein Kareem, Sana Shahab, Sanjeev Kumar Joshi, Hussein Abdullah Abbas, Ahmed Alawadi, Ali Alsalamy