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Acta Mechanica OnlineFirst articles

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 …

Authors:
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 …

Authors:
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 …

Authors:
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

17-04-2024 | Original Paper

The dispersion and reflection characteristics of coupled waves in the piezomagnetic solid with flexomagnetic microstructure effect

The dispersion and reflection characteristics of coupled waves in the piezomagnetic solid with flexomagnetic microstructure effect are studied in this paper. The flexomagnetic effect, strain gradient effect and micro-inertia effect are introduced …

Authors:
Fengyu Jiao, Zhongxian Liu, Jinghong Liu, Mingyang Pan

16-04-2024 | Original Paper

Dynamics of a heavy pendulum of variable length with a movable suspension point

Dynamics of a pendulum of variable length with a movable suspension point performing a predetermined motion is considered. The laws of changing the length of the pendulum and the motion of the suspension point are indicated, at which the equation …

Authors:
Alexander A. Burov, Vasily I. Nikonov

Open Access 15-04-2024 | Original Paper

Moving contact problem of a functionally graded orthotropic coated half plane

This paper develops a frictional moving contact model for a functionally graded (FG) orthotropic layer pressed by a rigid cylindrical punch. The FG orthotropic layer is fully bonded to the isotropic half-plane. The punch moves to the left on the …

Authors:
Pembe Merve Karabulut, İlkem Turhan Çetinkaya, Hüseyin Oğuz, İsa Çömez

15-04-2024 | Original Paper

Energy supply into a semi-infinite -Fermi–Pasta–Ulam–Tsingou chain by periodic force loading

We deal with dynamics of the $$\beta $$ β -Fermi–Pasta–Ulam–Tsingou chain with one free end, subjected to the sudden sinusoidal force. We examine the evolution of the total energy supplied into the chain at large times. In the harmonic case ( …

Author:
Sergei D. Liazhkov

15-04-2024 | Original Paper

Lamb waves in three-layered plates: crossing fundamental branches and wave bifurcation

The analysis of dispersion portraits of Lamb waves propagating in stratified plates satisfying the orthogonal Wiechert condition reveals the crossing of fundamental Lamb modes, leading to a state of possible wave bifurcation, when the wave energy …

Author:
S. V. Kuznetsov

15-04-2024 | Original Paper

Free vibration characteristics of stiffened sandwich plates with auxetic core and functionally graded piezoelectric face sheet

In this paper, the free vibration characteristics of stiffened sandwich plates with auxetic core and functionally graded piezoelectric face sheet are investigated. The sandwich plate configuration comprises three distinct layers: a top layer …

Authors:
Van-Tham Vu, Huu-Quoc Tran

15-04-2024 | Original Paper

Molecular dynamics simulation of tension of polymer composites reinforced with graphene and graphene oxide

This study utilized molecular dynamics simulation to investigate the mechanical properties of polymer, graphene, graphene oxide, and their composites. Polypropylene, polyethylene, and polyvinyl alcohol reinforced with graphene and graphene oxide …

Authors:
Khalfani Juma Mofu, Yi-Fan Wei, Jemal Fahmi Awol, Yan-Gao Hu

Open Access 10-04-2024 | Original Paper

Extending intergranular normal-stress distributions using symmetries of linear-elastic polycrystalline materials

Intergranular normal stresses (INS) are critical in the initiation and evolution of grain boundary damage in polycrystalline materials. To model the effects of such microstructural damage on a macroscopic scale, knowledge of INS is usually …

Author:
Samir El Shawish

08-04-2024 | Original Paper

Effective dynamic properties of multi-segment beam lattices: a dynamic stiffness formulation

We examine the macroscopic moduli of lattices composed of multi-segment beams (MSBs), each of which includes more than one segment with independent geometric and material parameters, with a belief that a wider adjustable range can be obtained via …

Authors:
Changqing Peng, Jinxing Liu, Ai Kah Soh

08-04-2024 | Original Paper

Buckling behaviour of the stiffened hygrothermally stable composite plates with interfacial debond subjected to environmental and operational loading conditions

Due to the advantage of strength enhancement without increasing the structural weight, stiffeners are commonly used in many engineering structures. However, during their service life, these stiffened structures are usually exposed to an extreme …

Authors:
Akshay Prakash Kalgutkar, Sauvik Banerjee

08-04-2024 | Original Paper

Isogeometric homogenization of unidirectional nanocomposites with energetic surfaces

The present work aims to propose an interface-enriched isogeometric analysis strategy for predicting the size-dependent effective moduli and local stress field of periodic arrays of nanosize inhomogeneity. The proposed framework allows for an …

Authors:
Xiaoxiao Du, Qiang Chen, Chatzigeorgiou George, Fodil Meraghni, Wei Wang, Gang Zhao

08-04-2024 | Original Paper

The influences of the punch geometry on the contact behaviors of a finite-thickness strip with thermoelectric effects

The frictionless contact problem between a conducting triangular or cylindrical punch and a thermoelectric strip is analyzed in this paper. When designing and optimizing thermoelectric devices for energy harvesting and temperature control …

Authors:
Xiaojuan Tian, Yueting Zhou, Chuanzeng Zhang

07-04-2024 | Original Paper

Experimental design of a grounding metamaterial with a zero-frequency bandgap

Metamaterials with ultrawide and ultralow frequency bandgaps have broad applications in engineering. In this work, a grounding metamaterial with internal vibrators is proposed. This metamaterial can produce a coupling bandgap and zero-frequency …

Authors:
Leiyu Yang, Lifeng Wang, Xiao Yu

07-04-2024 | Original Paper

Propagation of semi-infinite crack in an initially stressed dry sandy medium impacted by shear wave

This study deals with the propagation of a semi-infinite crack influenced by SH-wave propagation in an initially stressed dry sandy (ISDS) strip. The Fourier integral transforms (FIT) and Wiener–Hopf (WH) approach are used to solve the model …

Authors:
Ajeet Kumar Singh, Abhishek Kumar Singh

04-04-2024 | Original Paper

Effect of crack on the dynamic response of bidirectional porous functionally graded beams on an elastic foundation based on finite element method

The contribution provided in this study is to investigate the dynamic response of Euler–Bernoulli imperfect FG beams-cracked on Winkler-elastic foundation, considering pinned–pinned boundary condition. The equations are discretized with classical …

Authors:
Mouloud Dahmane, Mourad Benadouda, Riadh Bennai, Ahmed Saimi, Hassen Ait Atmane

03-04-2024 | Original Paper

A coupled hygro-thermo-mechanical Cosserat peridynamic modelling of fire-induced concrete fracture

In this study, a fully coupled hygro-thermo-mechanical bond-based Cosserat peridynamic model is formulated to simulate the complex crack propagation and multi-field interaction process in concrete under fire. This model can consider the effect of …

Authors:
Jiaming Zhang, Min Yu, Xihua Chu, Rongtao Li

03-04-2024 | Original Paper

Reflection and transmission of elastic waves through a sandwich structure with the microstructural effects and Lorentz force considered

The reflection and transmission of a plane elastic wave through a microstructural slab sandwiched by two half-spaces with consideration of the microstructural effects and the Lorentz force simultaneously are investigated in the present work. The …

Authors:
Yueqiu Li, Tiantian Yue, Xinyu Bian, Zihao Guo, Changda Wang