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Acta Mechanica OnlineFirst articles

01-06-2024 | Original Paper

On the large deformation vibrations of Graphene platelets-reinforced composite plates located on elastic foundation: nonlinear analytical method

The nonlinear vibration analysis of a sandwich rectangular plate is presented in this study. The layers of the plate are composed of composites reinforced with graphene nanoplatelets, while the plate's core is composed of honeycomb structures. The …

Authors:
Jinping Chen, Mohd Ahmed

31-05-2024 | Original Paper

PINN enhanced extended multiscale finite element method for fast mechanical analysis of heterogeneous materials

The extended multiscale finite element method (EMsFEM) shows great efficiency and accuracy for analyzing the mechanical behavior of heterogeneous materials, especially for non-periodic multiscale materials. The conventional EMsFEM requires solving …

Authors:
Zhetong Wu, Hanbo Zhang, Hongfei Ye, Hongwu Zhang, Yonggang Zheng, Xu Guo

30-05-2024 | Original Paper

A layered model for vibration analysis of piezoelectric–piezomagnetic bimorph nanobeams with nonlocal small-scale effect

Based on the nonlocal theory, a layered theoretical model is presented for vibration analysis of piezoelectric–piezomagnetic bimorph nanobeams. The layer-wise expressions of displacement and potential fields across the thickness are provided …

Authors:
L. L. Zhang, J. J. Wen, J. Zhao

30-05-2024 | Original Paper

Dynamic response of bidirectional functionally graded beams with elastic supports and foundations under moving harmonic loads

Dynamic behavior of elastically supported bidirectional functionally graded (BDFG) beams resting on an elastic foundation under a moving harmonic load is investigated based on Chebyshev collocation method. Material properties of the BDFG beam are …

Authors:
Wei-Ren Chen, Chien-Hung Lin

30-05-2024 | Original Paper

Magneto–thermoelastic behavior of an orthotropic hollow cylinder based on Lord–Shulman and Green–Lindsay theories

In this research, an analytical solution based on the finite Hankel transformation was developed for the magneto–thermoelasticity problem in an orthotropic hollow cylinder. Two second sound theories of generalized thermoelasticity, the …

Author:
Hamid Sharifi

30-05-2024 | Original Paper

Multiple screw dislocations and a mode III Zener–Stroh crack in a nanowire

We first study an arbitrary number of identical parallel screw dislocations evenly distributed along a concentric circle within a nanowire of radius R. Two equilibrium positions, one stable and the other unstable, co-exist for each screw …

Authors:
Xu Wang, Peter Schiavone

29-05-2024 | Original Paper

Seismic responses of P wave incident stratified unsaturated soil site under thermal effects

Drawing upon the fundamental principles of mixture continuum and thermodynamics, a planar P wave incident model for layered unsaturated soil is formulated. Employing the Helmholtz vector decomposition principle, the wave field within the layered …

Authors:
Yiqi Yang, Qiang Ma

29-05-2024 | Original Paper

Fracture criteria and rheological fracture mechanism of brittle materials based on Eshelby stress

In the course of damage and fracture, the material undergoes energy evolution. The crack driving force, known as configurational force or material force, is generated due to the change of potential energy. We employed the configurational force …

Authors:
Chao Wang, Jili Feng

28-05-2024 | Original Paper

Nonlinear magnetoelectric effects in a composite piezomagnetic–piezoelectric semiconductor structure

In this paper, magnetoelectric effects in a composite piezomagnetic–piezoelectric semiconductor structure with the consideration of nonlinear constitutive relation is studied. On the basis of coupled field theory for composite …

Authors:
Luke Zhao, Feng Jin, Hua Li

28-05-2024 | Original Paper

Nonlinear forced vibration and detached resonance curves of axially moving functionally graded carbon nanotube reinforced composite plates

In this paper, the nonlinear forced vibration responses of axially moving functionally graded carbon nanotube reinforced composite (FG-CNTRC) rectangular thin plates are investigated. In the frame of classical plate theory and von Kármán geometric …

Authors:
Zhihua Wu, Yimin Zhang, Guo Yao, Yongheng Yu

28-05-2024 | Original Paper

Transient dynamics of an anisotropic plate on an elastic-inertial foundation with local supports

This paper presents a mathematical formulation of a transient problem for an anisotropic plate on an elastic-inertial foundation. The plate features local fixations of various types, located along its perimeter. The plate's contour can be …

Authors:
Dmitry O. Serdyuk, Gregory V. Fedotenkov

27-05-2024 | Original Paper

Bursting oscillation and energy harvesting efficiency of magnetically coupled bistable broadband PEH in low-frequency excitation

In this paper, the phenomenon of bursting oscillations and control of the magnetically coupled bistable broadband piezoelectric energy harvesting (PEH) system under low-frequency acceleration excitation are studied. Combined with the external …

Authors:
Meirong Ren, Youhua Qian

Open Access 26-05-2024 | Original Paper

Model reduction for an internally damped n-particle chain in a potential well under polyharmonic excitation

The study focuses on the model reduction of an internally damped chain of particles confined within a weakening potential well subjected to polyharmonic excitation to investigate the chain’s escape dynamics. The chain features strong linear …

Authors:
Attila Genda, Alexander Fidlin, Oleg Gendelman

25-05-2024 | Original Paper

Propagation of elastic waves in an incompressible nonlocal transversely isotropic diffusive medium

Various engineering equipments and devices use elastic vibrations and acoustic waves extensively for non-destructive testing and technical diagnostics of various materials and products. The propagation characteristics of plane and Rayleigh-type …

Author:
Baljeet Singh

Open Access 25-05-2024 | Original Paper

Decomposition of the mechanical stress tensor: from the compressible Navier–Stokes equation to a turbulent potential flow model

We frame the mechanical stress tensor decomposition in a general procedure which involves the Helmholtz–Hodge decomposition. We highlight the impact of the mechanical stress tensor decomposition on the Navier–Stokes equation, with emphasis on the …

Authors:
Carmine Di Nucci, Simone Michele, Marcello Di Risio

23-05-2024 | Original Paper

Formulation and efficient implementation of coupled anisotropic damage-plasticity model for plain concrete

The formulation and finite element implementation of an efficient anisotropic damage-plasticity model is proposed to simulate the nonlinear behavior of plain concrete at small strains. The model's formulation is presented first; then, the …

Authors:
Ali Akbar Jahanitabar, Vahid Lotfi

23-05-2024 | Original Paper

Influence of non-uniform elastic foundations on free vibration behavior of nanocomposite plates interacting with a fluid environment based on a novel shear deformation theory

This paper investigates the influence of non-homogeneous elastic foundations on the free vibration characteristics of functionally graded graphene platelets reinforced composite plates submerged in fluid medium. A novel aspect of this study lies …

Authors:
Vu Ngoc Viet Hoang, Pham Trung Thanh

19-05-2024 | Original Paper

Study on thermal elastic damping of micro-scale semiconductor beams

Thermoelastic damping (TED) is a fundamental dissipation mechanism that inevitably exists in high-performance micro/nano-electro-mechanical systems. In this paper, the damping characteristics in semiconductor microbeam are studied under coupled …

Authors:
Shaofan Yang, Yaqin Song, Sen Gu, Zhimin Hou

18-05-2024 | Letter to the Editor

Bilinear-form and similarity-reduction visit to a variable-coefficient generalized dispersive water-wave system concerning Acta Mech. 233, 2527 and 233, 2415

Getting enthusiastic from two Acta Mech. water-wave advances, this Letter proposes to visit a variable-coefficient generalized dispersive water-wave system for certain long-weakly nonlinear and weakly-dispersive surface waves of variable depth in …

Authors:
Xin-Yi Gao, Yong-Jiang Guo, Wen-Rui Shan

15-05-2024 | Original Paper

Analytical model for the vibration of the circumferentially functionally graded cylindrical shell

The multi-directional functionally graded material (FGM) becomes now a new type of graded composite materials. Investigation about the circumferentially functionally graded (CFG) cylindrical shell is important for the investigation and design of …

Authors:
Jian-Fei Lu, Meng-Qin Shi, Yu-Hao Peng