AI Article Synopsis
- Using conformal mapping techniques, innovative lamellar structures are created to cloak the impact of screw dislocation dipoles, circular Eshelby inclusions, or concentrated couples.
- The lamellar design consists of two half-planes attached by a central coating of adjustable thickness that houses one of the aforementioned elements.
- These configurations ensure that the presence of the dislocation dipole, Eshelby inclusion, or concentrated couple does not disrupt the uniform stress fields in the adjacent half-planes.
Article Abstract
Using conformal mapping techniques, we design novel lamellar structures which cloak the influence of any one of a screw dislocation dipole, a circular Eshelby inclusion or a concentrated couple. The lamellar structure is composed of two half-planes bonded through a middle coating with a variable thickness within which is located either the dislocation dipole, the circular Eshelby inclusion or the concentrated couple. The Eshelby inclusion undergoes either uniform anti-plane eigenstrains or uniform in-plane volumetric eigenstrains. As a result, the influence of any one of the dislocation dipole, the circular Eshelby inclusion or the concentrated couple is cloaked in that their presence will not disturb the prescribed uniform stress fields in both surrounding half-planes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7544348 | PMC |
| http://dx.doi.org/10.1098/rspa.2020.0095 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optimal Arrangements and Local Anisotropy of {100} Guinier-Preston (GP) Zones by Parametric Dislocation Dynamics (PDD) Simulations.
Materials (Basel)
October 2024
Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan.
Stress-oriented precipitation and the resulting mechanical anisotropy have been widely studied over the decades. However, the local anisotropy of precipitates with specific orientations has been less thoroughly investigated. This study models the interaction between an edge dislocation source and {100} variants of Guinier-Preston (GP) zones in Al-Cu alloys using the parametric dislocation dynamics (PDD) method.
View Article and Find Full Text PDFLong ranged stress correlations in the hard sphere liquid.
J Chem Phys
October 2024
Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany.
The smooth emergence of shear elasticity is a hallmark of the liquid to glass transition. In a liquid, viscous stresses arise from local structural rearrangements. In the solid, Eshelby has shown that stresses around an inclusion decay as a power law r-D, where D is the dimension of the system.
View Article and Find Full Text PDFMean-field homogenization of liquid metal elastomer composites: comparative study and exact dilute solution of core-shell inclusion.
J Phys Condens Matter
September 2024
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
Liquid metal-elastomer composites (LMECs) have gathered significant attention for their potential applications in various functional stretchable devices, with inclusion sizes ranging from micrometers to nanometers. These composites exhibit exceptional properties, such as high electric permittivity and thermal conductivity, surpassing those of the elastomer matrix, thus enabling a broader range of applications without compromising the material's stretchability. To investigate the diverse effective elastic and functional properties of LMECs, micromechanics-based homogenization method based on Eshelby's inclusion solution are invaluable.
View Article and Find Full Text PDFTopological characterization of rearrangements in amorphous solids.
Phys Rev E
May 2024
Department of Material Sciences and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA.
In amorphous materials, plasticity is localized and occurs as shear transformations. It was recently shown by Wu et al. that these shear transformations can be predicted by applying topological defect concepts developed for liquid crystals to an analysis of vibrational eigenmodes [Z.
View Article and Find Full Text PDFMicromechanical analysis for effective thermal and electromagnetic properties of composite materials containing anisotropical and ellipsoidal fillers oriented randomly.
Heliyon
June 2023
Division of Mechanical Engineering, Kyoto Institute of Technology, 1 Matsugasaki, Sakyo-ku, Kyoto City, Kyoto, Japan.
In this study, micromechanical modeling will be performed for composite materials containing fillers oriented randomly in the matrix. The purpose of this study is to derive more general and explicit solutions for the effective thermal and electromagnetic properties of such composite materials without restricting the properties and shapes of the fillers. For this purpose, it is assumed that the physical properties of the filler are the same anisotropic properties as orthorhombic materials, and the shape of the fillers is ellipsoidal.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!