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Archives of Mechanics
Scopus
ISSN 0373-2029 · Institute of Fundamental Technological Research Polish Academy of Sciences · 412 artikel di indeks
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Artikel Jurnal
1D, 2D axisymmetric and 3D numerical simulation of valve-induced water-hammer
In the present research, a numerical investigation of the classical water hammer problem induced by rapid valve closure in a reservoir-pipe-valve system is carried out. Multiple modeling approaches with different levels of spatial fidelity are developed, including a 1D Method of Characteristics…
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Artikel Jurnal
Analytical and numerical analysis of a continuous model of a flexible suspension element under vertical loads
Conducting static analysis to determine operational characteristics of a flexible element is a crucial stage in the design of suspension engineering structures. Considering the structural features and production requirements for computational accuracy, the use of theoretical foundations of the…
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Artikel Jurnal
A coupled mechanical-diffusion model for hydrogen-driven ductility degradation
The permeation of hydrogen atoms into metallic structures leads to a variety of unfavorable mechanisms, which result in a reduction in the material's lifespan and unpredictable mechanical failures. In this context, the objective of this work is to model the nonlinear mechanical response of metallic…
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Artikel Jurnal
Instability of the Navier-Stokes-Voigt fluid flow with couple stresses effect
This study examines the linear instability in a channel flow of the Navier-Stokes-Voigt viscoelastic fluid, influenced by couple stresses. It confirms the applicability of Squire's theorem and develops a generalized eigenvalue problem for two-dimensional modes using two Chebyshev collocation…
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Artikel Jurnal
Quasi-static compression and energy absorption performance of a hexa-arm honeycomb with different arrangement pattern
A hexa-arm honeycomb unit cell derived from a traditional honeycomb structure is proposed in this study. Through the periodic arrangement of the unit cell in a two-dimensional plane, four distinct honeycomb configurations are constructed: high density hexa-arm honeycomb (HHAH), orthogonal hexa-arm…
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Artikel Jurnal
Mechanics of isotropic points under frictional contacts: experimental and theoretical studies
Understanding the mechanical behaviour of isotropic points (IPs)-regions of hydrostatic stress with zero shear-is essential for interpreting photoelastic fringe patterns and analysing load transfer in solid bodies. This study investigates IP formation and evolution in circular disks subjected to…
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Artikel Jurnal
Dispersion characteristics of shear horizontal waves in piezoelectric nanoplates: a nonlocal strain gradient theory incorporating surface effects
This paper investigates the propagation of shear horizontal (SH) waves in piezoelectric nanoplates by coupling the Gurtin-Murdoch surface model with the nonlocal strain gradient theory. The Legendre polynomial expansion method with analytical integration is developed, which reformulates the complex…
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Artikel Jurnal
Point force in a plane in the context of fractional nonlocal elasticity
Solutions to the point load problems for elastic solids have different applications in geomechanics, contact mechanics, tribology as well as in modeling of lattice defects in crystals. Nonlocal elasticity assumes an integral constitutive equation for the stress tensor, takes into account…
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Artikel Jurnal
Problems of steady vibrations in the theory of Moore-Gibson-Thompson thermoviscoelasticity for materials with voids
In this paper, the linear theory of Moore-Gibson-Thompson (MGT) thermoviscoelasticity for materials with voids is examined and the basic boundary value problems (BVPs) of steady vibrations are investigated. The governing equations of motion and steady vibrations are formulated. The fundamental…
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Artikel Jurnal
An analytical model for ballistic performance prediction of elastoplastic materials with strain hardening
This study presents an analytical model to predict the ballistic performance of elastoplastic materials with strain hardening under normal impact by rigid penetrators. The model integrates the localized interaction model with the spherical cavity-expansion theory to account for dynamic material…
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Artikel Jurnal
Simulation of transient fluid–structure interaction in flapping-wing micro aerial vehicles
The objective of this study is to investigate aeroelastic phenomena occurring during airflow around flapping wings of a micro aerial vehicle (MAV) inspired by insect anatomy. A numerical model of the wing and the flow configuration was developed based on an experiment conducted at ESPCI Paris…
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Artikel Jurnal
Investigations of column separation influence on pressure waves severity based on results of water hammer experiments in elastically supported pipeline
Water hammer (WH) events are involved in pipelines when the flow is disturbed by any reason changing its velocity, which produces pressure variations and elastic waves propagating in liquid along a pipeline at the acoustic wave-speed. These phenomena stay more complex if dynamic fluid-structure…
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Artikel Jurnal
Planar plasma source and a floating wall
The Debye sheath that forms at the plasma-wall interface is discussed by means of the one dimensional collisionless kinetic model. We pay special attention to the simplification often adopted both in theoretical descriptions and numerical simulations, treating the wall as a perfect absorber. We…
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Artikel Jurnal
Potential method in the theory of Moore-Gibson-Thompson thermoporoelasticity
In the present paper the linear theory of Moore–Gibson–Thompson thermoporoelasticity is considered and the basic boundary value problems (BVPs) of steady vibrations are investigated. Namely, the fundamental solution of the system of steady vibration equations are constructed explicitly by…
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Artikel Jurnal
Viscoelastic model for bending process of continuous fiber-reinforced thermoplastic sheets
This paper presents an analysis of the bending process in thermoplastic sheets reinforced with unidirectional continuous fibers. To capture the material’s viscoelastic response during the bending process, a novel viscoelastic model is described based on the concept of transient reversible networks…
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Artikel Jurnal
The role of sand filler in enhancing the mechanical properties of polymethylmethacrylate composites
Polymethylmethacrylate (PMMA) is widely used in biomechanics and civil engineering for its properties. While various fillers have been studied to enhance mechanical properties of PMMA, the impact of sand as a filler has been less explored. This study investigates the effects of varying sand content…
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Artikel Jurnal
Development of a computational framework for low-Reynolds number propeller aeroacoustics
The paper focuses on the development and validation of a new computational framework designed for the prediction of tonal and broadband noise radiation of propellers of unmanned aerial vehicles (UAVs) operating in the low-Reynolds number regime. The depicted workflow is hybrid, consisting of…
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Artikel Jurnal
Analytical and computational methods for a laterally graded surface loaded by a bonded piezoelectric thin film
Analytical and computational techniques are developed to carry out stress analyses for an advanced material system comprising a piezoelectric thin film bonded to a laterally graded half-plane. The piezoelectric thin film is assumed to be under electric field loading. Governing partial differential…
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Artikel Jurnal
Dynamic analysis of FG porous nano-beams using HOSDT and various porosity and volume fraction models
This study presents a comprehensive framework for analyzing the free vibration behavior of functionally graded (FG) porous nanobeams. A high-order shear deformation theory is employed to formulate the governing equations of motion, incorporating Eringen’s nonlocal differential constitutive…
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Artikel Jurnal
Numerical analysis of Al2O3/water nano-fluid natural convection in a square cavity filled with an anisotropic porous medium under a magnetic field
Natural convection in porous media is crucial for applications such as geothermal energy cooling systems and energy storage, where efficient heat transfer is essential. However, the combined effect of anisotropy in the porous matrix and an inclined magnetic field on nanofluid heat transfer remains…