☆ 4.7 Article

Stress fields of finite-size dislocation walls and prediction of back stress induced by geometrically necessary dislocations at grain boundaries

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2020)

期刊

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS

卷 143, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD

DOI: 10.1016/j.jmps.2020.104071

关键词

Grain boundaries; Polycrystal; Geometrically necessary dislocations; Crystal plasticity; Dislocation dynamics

类别

Materials Science, Multidisciplinary Mechanics Physics, Condensed Matter

资金

Euratom research and training program 2014-2018 [661913]

向作者/读者索取更多资源

Protocol

Reagent

摘要

At low strain, geometrically necessary dislocations (GND) confined in the close vicinity of grain boundaries can be approximated as a dislocation wall structure called a GND facet. Analytical solutions derived from Field Dislocations Mechanics (FDM) theory allow calculating the stress components associated with the GND facets but are unable to account for the stress field variation induced by finite size effect. Dislocation dynamics simulation is used to investigate the true stress field of GND facets. The geometry, dimension and dislocation density of three generic types of GND facets (twist, tilt and epitaxial facets) are systematically studied. In all cases, the stress field generated by GND facets is proportional to the surface GND density and its spatial distribution can be recovered using FDM solution combined with two scaling parameters identified from DD simulation results. This calculation procedure can be generalized to any crystal structure by relating the components of the surface Nye's tensor to the solutions of simple cubic slip systems. Finally, static and dynamic tests are made to validate the calculation of back stress within regular grains bounded by GND facets. (c) 2020 Elsevier Ltd. All rights reserved.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Article Engineering, Mechanical

Grain size effect of FCC polycrystal: A new CPFEM approach based on surface geometrically necessary dislocations

Maoyuan Jiang, Zhengxuan Fan, Serge Kruch, Benoit Devincre

Summary: This study investigates the grain size effect in FCC polycrystalline plasticity using a multiscale modeling approach combining discrete dislocation dynamics (DDD) and crystal plasticity finite element method (CPFEM). The developed model quantitatively reproduces the deformation curves of FCC polycrystals and shows significant potential for further applications.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

添加到收藏夹

Article Engineering, Mechanical

A non-local methodology for geometrically necessary dislocations and application to crack tips

Yilun Xu

Summary: A non-local method for establishing GND based on a non-local domain integral has been developed and validated, showing improved accuracy in predicting material fatigue life. The comprehensive study on non-local domain effect revealed the necessity of applying the non-local GND method, as it resembles experimental observations and enhances stress field predictions compared to local methods.

INTERNATIONAL JOURNAL OF PLASTICITY (2021)

添加到收藏夹

Article Engineering, Mechanical

Multiscale analyses of the interaction between dislocation and σ9 symmetric tilt grain boundaries in Fe-Si bicrystals by nanoindentation technique

Masato Wakeda, Ya-Ling Chang, Seiichiro Ii, Takahito Ohmura

Summary: The study evaluated the dislocation-grain boundary interactions in polycrystalline metals using experimental and computational nanoindentation analyses. The results from experiments and simulations provided insights into the plastic zone formation, dislocation nucleation, and transmission behavior at different GB interfaces. The findings highlighted the importance of GB structure and stress in influencing the strengthening mechanism of metals.

INTERNATIONAL JOURNAL OF PLASTICITY (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

A finite deformation theory for grain boundary plasticity based on geometrically necessary disconnections

Himanshu Joshi, Junyan He, Nikhil Chandra Admal

Summary: Grain boundary processes such as shear coupling and sliding are consequences of plastic distortion during grain boundary motion. This study introduces the concept of disconnections as the primary carriers of grain boundary plasticity, and develops a diffuse-interface finite deformation theory for grain boundary plasticity based on the notion of geometrically necessary disconnections. The proposed model can accurately describe phenomena such as state-dependent shear coupling, mode switching, grain boundary sliding, and grain rotation.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2022)

添加到收藏夹

Article Materials Science, Multidisciplinary

Uncovering the existence of anti-backstress associated with dislocations accumulated at grain boundaries during plastic deformation

Maoyuan Jiang, Benoit Devincre

Summary: The influence of grain orientation on long-range internal stress associated with the accumulation of geometrically necessary dislocations (GNDs) during plastic deformation is numerically investigated. It is found that GNDs stored at grain boundaries (GBs) do not systematically generate a backstress within grains. Surprisingly, accumulation of GNDs at certain GB interfaces leads to the emergence of long-range anti-backstress, promoting dislocation dynamics and plastic strain within the grains. This discovery provides guidelines to improve the physical content of current crystal plasticity models.

COMPUTATIONAL MATERIALS SCIENCE (2022)

添加到收藏夹

Article Crystallography

Geometrically Necessary Dislocation Analysis of Deformation Mechanism for Magnesium under Fatigue Loading at 0 °C

Qizhen Li

Summary: This study analyzed the GND densities of five selected fine-grained magnesium samples. Different fatigue-loading conditions were applied to three samples at 0 degrees C, one experienced quasi-static tensile loading at 0 degrees C, and one represented the as-rolled state. The results provide new insights into the deformation mechanism of fine-grained magnesium at 0 degrees C, showing significant increases in GND density for the tested samples compared to the as-rolled sample, especially for the sample with low-maximum applied stress.

CRYSTALS (2023)

添加到收藏夹

Article Materials Science, Multidisciplinary

Unveiling grain size effect on shock-induced plasticity and its underlying mechanisms in nano-polycrystalline Ta

Dun Wu, Kaiguo Chen, Yaxin Zhu, Lv Zhao, Minsheng Huang, Zhenhuan Li

Summary: The study reveals that the plastic wave structure of Ta under shock compression transitions from single to double and then back to single as the grain size increases. The dominant deformation mechanisms also shift from grain boundary-mediated plasticity to coexistence of twinning and slipping. Twinning-detwinning and amorphization-recrystallization were found to be dominant under strong and ultra-strong shock compressions, showing weak grain size dependences. Flow stresses at the Hugoniot state follow the Hall-Petch relation under weak and strong shocks but exhibit complexity under ultra-strong shock.

MECHANICS OF MATERIALS (2021)

添加到收藏夹

Article Acoustics

Discrete dislocation simulation of the ultrasonic relaxation of non-equilibrium grain boundaries in a deformed polycrystal

D. V. Bachurin, R. T. Murzaev, A. A. Nazarov

Summary: The relaxation of disordered dislocation arrays in a model polycrystal under ultrasonic action is studied, showing that ultrasonic treatment leads to significant rearrangement of lattice dislocations and their gliding towards grain boundaries. The model predicts an optimal amplitude for maximum relaxing effect to be achieved, and investigates the dependence of dislocation relaxation on grain size.

ULTRASONICS (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Microhardness model based on geometrically necessary dislocations for heterogeneous material

Mohammed Mendas, Stephane Benayoun, Mohamed Hadj Miloud, Ibrahim Zidane

Summary: This study extends the analysis of the indentation size effect (ISE) to lamellar cast irons, demonstrating that the tensile model and the concept of geometrically necessary dislocations (GNDs) can be used to predict the ISE of the pearlitic matrix within these materials. The summation of stresses associated with GNDs and statistically stored dislocations (SSDs) is shown to be more adequate in the prediction of ISE compared to considering only one work-hardening stress.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Effect of loading path on grain misorientation and geometrically necessary dislocation density in polycrystalline aluminum under reciprocating shear

Wenkai Fu, Yulan Li, Shenyang Hu, Peter Sushko, Suveen Mathaudhu

Summary: Through the study of crystal plasticity theory, it was found that in solid phase processing, regions with high misorientation and GND density first appear near grain boundaries and extend towards interior grains. The loading path affects plastic deformation accumulation and recovery, and thus affects dislocation evolution and misorientation.

COMPUTATIONAL MATERIALS SCIENCE (2022)

添加到收藏夹

Article Nanoscience & Nanotechnology

Correlation between dislocation hardening and the geometrically-necessary-dislocation densities in a hexagonal-close-packed Zr-2wt%Ti alloy

Qingge Xie, Zhi Li, Hongchua Ma, Shuang Liu, Xingwei Liu, Jinxu Liu, Jurij J. Sidor

Summary: Studying the hardening variation inside and outside of Geometrically Necessary Bands (GNBs) helps understand their formation to accommodate deformation heterogeneity. The slip activities induced by prismatic and basal slips were verified using a crystal plasticity model and electron backscatter diffraction microstructures. Abundance of GNBs was observed, and the hardening/softening effect in GNBs is compensated by softening/hardening behavior near GNBs. The high and low GNDD regions share the same shape and peak positions in frequency-strength profiles, confirming the correlation between high GNDDs and low GNDDs.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2023)

添加到收藏夹

Article Engineering, Manufacturing

Deviation of mechanical behavior in microforming from continuum scaling: A geometrically necessary dislocation storage perspective

Bin Zhang, Andrew C. Meng, W. J. Meng

Summary: Metal forming at the meso- and micro-scale can be affected by the grain size of the material, leading to deviations from conventional plasticity. Larger grain sizes in copper require higher pressures for extrusion in axisymmetric reverse extrusion and result in less flow into micron-sized gaps in double-punch molding compared to smaller grain sizes. Crystallographic orientation data suggests that larger grain sizes store more dislocations during deformation, influencing the mechanical behavior.

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

On the implementation of dislocation reactions in continuum dislocation dynamics modeling of mesoscale plasticity

Vignesh Vivekanandan, Peng Lin, Grethe Winther, Anter El-Azab

Summary: The continuum dislocation dynamics framework aims to capture the evolution of dislocation density and deformation of crystals under mechanical loading by solving transport equations for dislocations concurrently with crystal mechanics equations, incorporating dislocation reactions to improve predictability. The proposed formulation, which includes virtual dislocations to enforce dislocation line continuity, enables accurate enforcement of divergence free condition in numerical solutions, leading to highly accurate results in comparison with previous approaches.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Direct observation of the grain boundaries acting as dislocation sources in nanocrystalline platinum

Xiaochen Li, Haibo Long, Jianfei Zhang, Dongfeng Ma, Deli Kong, Yan Lu, Shiduo Sun, Jixiang Cai, Xiaodong Wang, Lihua Wang, Shengcheng Mao

Summary: This study used in situ TEM observations to directly reveal dislocation nucleation at grain boundaries in nanocrystalline metals. The findings contradict the common hypothesis predicted by molecular dynamic simulations, showing that complete dislocations can be emitted from grain boundaries in small-grained structures.

MATERIALS CHARACTERIZATION (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Density functional theory-informed dislocation density hardening within crystal plasticity: Application to modeling deformation of Ni polycrystals

Adnan Eghtesad, John D. Shimanek, Shun -Li Shang, Ricardo Lebensohn, Marko Knezevic, Zi-Kui Liu, Allison M. Beese

Summary: This study successfully integrates first-principles calculations based on density functional theory (DFT) into the dislocation density hardening law of the crystal plasticity fast Fourier transform (CPFFT) model, improving the robustness of the model and reducing the uncertainties in calibrating the macroscopic flow response.

COMPUTATIONAL MATERIALS SCIENCE (2022)

添加到收藏夹

Article Engineering, Mechanical

Consistent formulation for the Discrete-Continuous Model: Improving complex dislocation dynamics simulations

O. Jamond, R. Gatti, A. Roos, B. Devincre

INTERNATIONAL JOURNAL OF PLASTICITY (2016)

添加到收藏夹

Article Materials Science, Multidisciplinary

Orowan strengthening and forest hardening superposition examined by dislocation dynamics simulations

Sylvain Queyreau, Ghiath Monnet, Benoit Devincre

ACTA MATERIALIA (2010)

添加到收藏夹

Article Engineering, Mechanical

Effects of the grain size and shape on the flow stress: A dislocation dynamics study

Maoyuan Jiang, Benoit Devincre, Ghiath Monnet

INTERNATIONAL JOURNAL OF PLASTICITY (2019)

添加到收藏夹

Article Multidisciplinary Sciences

Dislocation driven nanosample plasticity: new insights from quantitative in-situ TEM tensile testing

Vahid Samaee, Riccardo Gatti, Benoit Devincre, Thomas Pardoen, Dominique Schryvers, Hosni Idrissi

SCIENTIFIC REPORTS (2018)

添加到收藏夹

Article Materials Science, Multidisciplinary

On the origin of the Hall?Petch law: A 3D-dislocation dynamics simulation investigation

Maoyuan Jiang, Ghiath Monnet, Benoit Devincre

Summary: The study revealed that the back stress and associated strain hardening are independent of grain size at low strain, while the grain size effect is controlled by increasing the critical resolved shear stress (CRSS) when decreasing grain size. The evolution of the CRSS amplitude is controlled by two competing strengthening mechanisms, justifying the generic 1/d dependent form of the Hall-Petch law observed in simulations and experiments.

ACTA MATERIALIA (2021)

添加到收藏夹

Article Engineering, Electrical & Electronic

Mechanical simulation of foldable organic light-emitting diode display supporting layer

Wenqiang Wang, Yongzhen Jia, Haoqun Li, Maoyuan Jiang, Zhuo Zhang

Summary: The study designed a periodic pattern supporting layer to decrease the modulus of the bending zone, improving flexibility and reducing peeling issues of the supporting layer. Proper design of pattern substructures and dimensions is crucial to enhance bending reliability of the OLED panel.

JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Uncovering the existence of anti-backstress associated with dislocations accumulated at grain boundaries during plastic deformation

Maoyuan Jiang, Benoit Devincre

Summary: The influence of grain orientation on long-range internal stress associated with the accumulation of geometrically necessary dislocations (GNDs) during plastic deformation is numerically investigated. It is found that GNDs stored at grain boundaries (GBs) do not systematically generate a backstress within grains. Surprisingly, accumulation of GNDs at certain GB interfaces leads to the emergence of long-range anti-backstress, promoting dislocation dynamics and plastic strain within the grains. This discovery provides guidelines to improve the physical content of current crystal plasticity models.

COMPUTATIONAL MATERIALS SCIENCE (2022)

添加到收藏夹

Article Engineering, Mechanical

Grain size effect of FCC polycrystal: A new CPFEM approach based on surface geometrically necessary dislocations

Maoyuan Jiang, Zhengxuan Fan, Serge Kruch, Benoit Devincre

Summary: This study investigates the grain size effect in FCC polycrystalline plasticity using a multiscale modeling approach combining discrete dislocation dynamics (DDD) and crystal plasticity finite element method (CPFEM). The developed model quantitatively reproduces the deformation curves of FCC polycrystals and shows significant potential for further applications.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

添加到收藏夹

Article Materials Science, Multidisciplinary

Yield stress strengthening in ultrafine-grained metals: A two-dimensional simulation of dislocation dynamics

S. Lefebvre, B. Devincre, T. Hoc

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2007)

添加到收藏夹

Article Materials Science, Multidisciplinary

Inhibited dynamic recovery and screw dislocation annihilation in multiple slip of fcc single crystals

LP Kubin, B Devincre, T Hoc

PHILOSOPHICAL MAGAZINE (2006)

添加到收藏夹

Article Materials Science, Multidisciplinary

Solute friction and forest interaction

G Monnet, B Devincre

PHILOSOPHICAL MAGAZINE (2006)

添加到收藏夹

Article Materials Science, Multidisciplinary

Non-Hermitian wave dynamics of odd plates: Microstructure design and theoretical modelling

Yanzheng Wang, Qian Wu, Yiran Tian, Guoliang Huang

Summary: This paper proposes the microstructure design of an odd plate and investigates the directional wave energy amplification and the presence of interface waves in odd plates through theoretical and numerical analysis. The research findings contribute to the understanding of elastic behavior in 2D non-Hermitian systems.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Topology optimization of flexoelectric metamaterials with apparent piezoelectricity

F. Greco, D. Codony, H. Mohammadi, S. Fernandez-Mendez, I. Arias

Summary: This study overcomes the difficulty of harnessing the flexoelectric effect by designing multiscale metamaterials. Through topology optimization calculations, we obtain optimal structures for various apparent piezoelectric properties and find that low-area-fraction lattices are the preferred choice. The results show competitive estimations of apparent piezoelectricity compared to reference materials such as quartz and PZT ceramics.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

A treatment of particle-electrolyte sharp interface fracture in solid-state batteries with multi-field discontinuities

Xiaoxuan Zhang, Tryaksh Gupta, Zhenlin Wang, Amalie Trewartha, Abraham Anapolsky, Krishna Garikipati

Summary: This study presents a computational framework for coupled electro-chemo-(nonlinear) mechanics at the particle scale in solid-state batteries, including interfacial fracture, degradation in charge transfer, and stress-dependent kinetics. The discontinuous finite element method allows for arbitrary particle shapes and geometries.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Coexistence of five domains at single propagating interface in single-crystal Ni-Mn-Ga shape memory alloy

Chengguan Zhang, Xavier Balandraud, Yongjun He

Summary: The coexistence of both austenite and martensite is a common characteristic in Shape Memory Alloys (SMAs). The multiple-domain microstructures, consisting of austenite, martensite twins, and individual martensite variants, evolve collectively during the phase transformation, affecting the material's macroscopic response. This paper presents an experimentally observed interface consisting of five domains in a Ni-Mn-Ga single-crystal, and analyzes the effects of thermal loading path and material initial state on the domain pattern formation.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

A snap-through instability of cell adhesion under perturbations in hydrostatic pressure

Shaobao Liu, Haiqian Yang, Guang-Kui Xu, Jingbo Wu, Ru Tao, Meng Wang, Rongyan He, Yulong Han, Guy M. Genin, Tian Jian Lu, Feng Xu

Summary: The balance between stress and adhesion plays a crucial role in governing the behaviors of adherent cells, such as cell migration. In certain microenvironments, such as tumor, variations in hydrostatic pressure can significantly impact cell volume and adhesion, which in turn affects cell behavior.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Pinning cracks by microstructure design in brittle materials

Xun Xiong, Qinglei Zeng, Yonghuan Wang, Ying Li

Summary: In this work, the authors investigate the possibility of enhancing the resistance to crack growth in brittle materials through microstructure design. They establish a computational framework to simulate crack propagation and characterize fracture energy. The effects of different types of voids on toughening mechanisms are explored, and the critical conditions for embrittlement-toughening transition are identified. The study also discusses the difference between void toughening in brittle and ductile materials, and extends the toughening strategy to nacre-like materials.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Dynamic high-order buckling and spontaneous recovery of active epithelial tissues

Huan Wang, Yong-Quan Liu, Jiu-Tao Hang, Guang-Kui Xu, Xi-Qiao Feng

Summary: This study establishes a cytoarchitectural model to accurately capture the buckling and postbuckling behaviors of epithelia under fast compression. The stress evolution of epithelia is divided into three stages: loading, phase transition, and stress recovery. The postbuckling process is governed by the active tension generated by the actomyosin network. The study also proposes a minimal model that predicts the flattening time and stress recovery extent as functions of applied strain or strain rate, in agreement with simulations and experiments.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Mechanics and topology of twisted hyperelastic filaments under prescribed elongations: Experiment, theory, and simulation

Lei Liu, Hao Liu, Yuming He, Dabiao Liu

Summary: This study investigates the mechanics and topologically complex morphologies of twisted rubber filaments using a combination of experiment and finite strain theory. A finite strain theory for hyperelastic filaments under combined tension, bending, and torsion has been established, and an experimental and theoretical morphological phase diagram has been constructed. The results accurately determine the configuration and critical points of phase transitions, and the theoretical predictions agree closely with the measurements.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Frictional slip wave solutions for dynamic sliding between a layer and a half-space

Abhishek Painuly, Kunnath Ranjith, Avinash Gupta

Summary: This paper analyzes the interfacial waves caused by frictional slipping and studies their dispersion relation and wave modes. By studying the slip waves in a geophysical model, the surface wave dispersion phenomenon is explored, and an alternative explanation is proposed.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Asymptotically matched extrapolation of fishnet failure probability to continuum scale

Houlin Xu, Joshua Vievering, Hoang T. Nguyen, Yupeng Zhang, Jia-Liang Le, Zdenek P. Bazant

Summary: Motivated by the extraordinary strength of nacre, this study investigated the probabilistic distribution of fishnet strength using Monte Carlo simulations and found that previous analytical solutions are not applicable for fishnets with a large number of links. By approximating large-scale fishnets as a continuum with cracks or holes, the study revealed that the strength distribution follows the Weibull distribution. This new model has significance for optimizing the strength-weight ratio in printed material structures.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Nonlinear anisotropic viscoelasticity

Souhayl Sadik, Arash Yavari

Summary: This paper revisits the mathematical foundations of nonlinear viscoelasticity and studies the geometry of viscoelastic deformations. It discusses the decomposition of the deformation gradient into elastic and viscous distortions and concludes that the viscous distortion can only be a two-point tensor. The governing equations of nonlinear viscoelasticity are derived and the constitutive and kinetic equations for various types of viscoelastic solids are discussed.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

Elastic energy and polarization transport through spatial modulation

Wen Cheng, Hongkuan Zhang, Yu Wei, Kun Wang, Gengkai Hu

Summary: In this study, we propose a phenomenon similar to Thouless pumping for a continuous in-plane elastic system, enabling topological transport of elastic waves through spatial modulation of material elasticity. By incorporating specific lattice microstructures, termed pentamode materials, precise and robust control over elastic wave propagation is achieved.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

Article Materials Science, Multidisciplinary

A simple quantitative model of neuromodulation, Part I: Ion flow neural ion channels

Linda Werneck, Mertcan Han, Erdost Yildiz, Marc-Andre Keip, Metin Sitti, Michael Ortiz

Summary: We have developed a simple model that describes the ionic current through neuronal membranes by considering the membrane potential and extracellular ion concentration. The model combines a simplified Poisson-Nernst-Planck model of ion transport through individual ion channels with channel activation functions calibrated from experimental data. The calibrated model accounts for the transport of calcium, sodium, potassium, and chloride and shows remarkable agreement with experimentally measured current-voltage curves for human neural cells.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2024)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.