Hemodynamics of Asymmetrically Stenotic Vertebral Arteries Based on Fluid-solid Coupling DOI
Yilin Zheng,

Haiquan Feng,

Chen He

et al.

Published: Oct. 21, 2024

Abstract Stenosis in the vertebral artery, often associated with atherosclerosis, presents complexities regarding relationship between internal resistance, shear stress and geometric characteristics of stenosis lesions. This study aims to elucidate these relationships through computational simulations utilizing medical imaging data human arteries. Various models representing different stenotic configurations were constructed, allowing for comprehensive analysis via Computational Fluid Dynamics (CFD) Fluid-Structure Interaction (FSI) methods. Hemodynamic parameters such as blood flow velocity, time-averaged wall (TWASS), oscillation index (OSI), relative retention time (RRT), solid mechanics indicators including total deformation vascular Von-Mises evaluated. Our findings revealed that lesion modes had impacts on field artery. Upon comparing mathematical model CFD FSI results, it was found an augmented rate led creation a watershed environment within vessel, thereby expediting onset atherosclerosis. In cases where artery experienced complete narrowing due consistent rate, there substantial rise velocity. Neglecting timely intervention alter heightened peril triggering dissection or even puncturing vessel directly.

Language: Английский

Forced Vibration Behaviour of Elastically Constrained Graphene Origami-Enabled Auxetic Metamaterial Beams DOI Creative Commons
Behrouz Karami, Mergen H. Ghayesh

Mathematical and Computational Applications, Journal Year: 2025, Volume and Issue: 30(1), P. 5 - 5

Published: Jan. 7, 2025

This paper explores the vibration behaviour of an elastically constrained graphene origami-enabled auxetic metamaterial beam subject to a harmonic external force. The effective mechanical properties are approximated using micromechanical model trained via genetic algorithm provided in literature. three coupled equations motion solved numerically; set trigonometric functions is used approximate displacement components. accuracy proposed confirmed by comparing it with natural frequencies simplified non-metamaterial structure available Following this validation, investigation extends investigate forced response beam, examining influence origami distribution pattern and content, folding degree, linear shear layer stiffness, geometrical parameters on dynamic structure. results generally highlight considerable effect layer, modelled as Pasternak foundation, beams.

Language: Английский

Citations

2
Influence of Porosity on Thermal Free Vibration of Rotating Porous Sigmoid Functionally Graded Plate with Bi-Directional Thickness Variation DOI

Ritwik Mandal,

Tripuresh Deb Singha, Tanmoy Bandyopadhyay

et al.

Journal of Vibration Engineering & Technologies, Journal Year: 2025, Volume and Issue: 13(1)

Published: Jan. 1, 2025

Language: Английский

Citations

2
On nonlinear 3D electro-elastic numerical modeling of two-phase inhomogeneous FG piezocomposites reinforced with GNPs DOI Creative Commons
Mohammad Malikan, Shahriar Dastjerdi, Magdalena Rucka

et al.

International Journal of Engineering Science, Journal Year: 2024, Volume and Issue: 207, P. 104174 - 104174

Published: Nov. 27, 2024

Language: Английский

Citations

6
Wave propagation characteristics of quasi-3D graphene origami-enabled auxetic metamaterial plates DOI Creative Commons
Behrouz Karami, Mergen H. Ghayesh

International Journal of Engineering Science, Journal Year: 2024, Volume and Issue: unknown, P. 104185 - 104185

Published: Dec. 1, 2024

Language: Английский

Citations

6
Nonlinear Biomechanical Behaviour of Extracranial Carotid Artery Aneurysms in the Framework of Windkessel Effect via FSI Technique DOI Creative Commons
Kaveh Moghadasi,

Mergen H. Ghayesh,

Jiawen Li

et al.

Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials, Journal Year: 2024, Volume and Issue: 160, P. 106760 - 106760

Published: Sept. 30, 2024

Language: Английский

Citations

5
On the size‐dependent vibrations of doubly curved porous shear deformable FGM microshells DOI Creative Commons
Behrouz Karami, Mergen H. Ghayesh, Shahid Hussain

et al.

International journal of mechanical system dynamics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

Abstract This paper aims to analyse the free vibrations of doubly curved imperfect shear deformable functionally graded material microshells using a five‐parameter model. Porosity is modeled via modified power‐law rule by logarithmic‐uneven variation along thickness. Coupled axial, transverse, and rotational motion equations for general microsystems are obtained virtual work/energy Hamilton's principle first‐order theory including small size dependence. The modal decomposition method then used obtain solution different geometries microshells: spherical, elliptical, hyperbolic, cylindrical. A detailed study on influence gradation porosity, small‐length scale coefficient, geometrical parameters frequency characteristics microsystem conducted shell geometries.

Language: Английский

Citations

5
Static Response and Solving Shear-Locking Issue of FG Plate via Refined Meshless Method and Three-Dimensional Estimation Functions Based on Reddy's HSDT DOI

Seyed Amin Vakili,

Farzad Shahabian, Mohammad Hossein Ghadiri Rad

et al.

Mechanics Research Communications, Journal Year: 2025, Volume and Issue: unknown, P. 104377 - 104377

Published: Jan. 1, 2025

Language: Английский

Citations

0
Surface effects and size-dependent dynamic analysis of Timoshenko micro-pipes conveying fluid under moving harmonic loads and magnetic fields DOI Creative Commons

Abbas Zandi-Baghche-Maryam,

Mohammad Hosseini, Reza Bahaadini

et al.

International Journal of Dynamics and Control, Journal Year: 2025, Volume and Issue: 13(2)

Published: Jan. 17, 2025

Language: Английский

Citations

0
Hemodynamics of asymmetrically stenotic vertebral arteries based on fluid–solid coupling DOI
Yilin Zheng,

Feng Haiquan,

Honglei Chen

et al.

Journal of Biological Physics, Journal Year: 2025, Volume and Issue: 51(1)

Published: Feb. 17, 2025

Language: Английский

Citations

0
The order of precedence in treatment of multiple intracranial aneurysms: insights from a fluid–structure interaction study DOI
Kornelia M. Kliś, Jerzy Gąsowski,

Antoni Cierniak

et al.

Biomechanics and Modeling in Mechanobiology, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

Language: Английский

Citations

0