Effective thermo-electro-mechanical modeling framework of lithium-ion batteries based on a representative volume element approach

Abstract The aim of this study is to present a representative volume element (RVE) for nanocomposites with different microstructural features using a stochastic finite element approach. To that end, computer-simulated microstructures of nanocomposites were generated to include a variety of uncertainty present in geometry, orientation, and distribution of carbon nanotubes. Microstructures were converted into finite element models based on an image-based approach for the determination of elastic properties. For each microstructure type, 50 realizations of synthetic microstructures were generated to capture the variability as well as the average values. Computer-simulated microstructures were generated at different length scales to determine the change in mechanical properties as a function of length scale. A representative volume element is defined at a length scale beyond which no change in variability is observed. The results show that there is no universal RVE applicable to all properties and microstructures; however, the RVE size is highly dependent on microstructural features. Microstructures with agglomeration tend to require larger RVE. Similarly, random microstructures require larger RVE when compared with aligned microstructures.

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Hole-expansion formability of dual-phase steels using representative volume element approach with boundary-smoothing technique

Materials Science and Engineering A ◽

10.1016/j.msea.2010.07.099 ◽

2010 ◽

Vol 527 (27-28) ◽

pp. 7353-7363 ◽

Cited By ~ 58

Author(s):

Ji Hoon Kim ◽

M.G. Lee ◽

D. Kim ◽

D.K. Matlock ◽

R.H. Wagoner

Keyword(s):

Representative Volume Element ◽

Volume Element ◽

Dual Phase ◽

Smoothing Technique ◽

Dual Phase Steels ◽

Hole Expansion ◽

Representative Volume ◽

Element Approach ◽

Boundary Smoothing

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Representative volume element model of lithium-ion battery electrodes based on X-ray nano-tomography

Journal of Applied Electrochemistry ◽

10.1007/s10800-016-1037-y ◽

2017 ◽

Vol 47 (3) ◽

pp. 281-293 ◽

Cited By ~ 16

Author(s):

Ali Ghorbani Kashkooli ◽

Amir Amirfazli ◽

Siamak Farhad ◽

Dong Un Lee ◽

Sergio Felicelli ◽

...

Keyword(s):

Lithium Ion Battery ◽

Representative Volume Element ◽

Lithium Ion ◽

Element Model ◽

Volume Element ◽

X Ray ◽

Representative Volume

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Development of Representative Volume Element Homogenization Model for Predicting Transversely Isotropic Elasticity of Lithium-Ion Batteries

Journal of Engineering Materials and Technology ◽

10.1115/1.4036709 ◽

2017 ◽

Vol 139 (4) ◽

Cited By ~ 1

Author(s):

Jin Chul Yun ◽

Seong Jin Park

Keyword(s):

Representative Volume Element ◽

Lithium Ion ◽

Transversely Isotropic ◽

Volume Element ◽

Elastic Behavior ◽

Design Stage ◽

Design Parameters ◽

Concept Design ◽

Representative Volume ◽

Isotropic Elasticity

In this study, a representative volume element (RVE) homogenization approach is proposed to predict the mechanical properties of a lithium-ion battery (LIB) cell, module, and pack in an electric vehicle (EV). Different RVE models for the LIB jellyroll and module are suggested. Various elastic properties obtained from RVE analyses were compared to the analytic solution. To validate the approach suggested, the elastic responses of two types of homogenized LIB module for various loading cases were compared to the model where all the jellyroll and module components were described fully. Additionally, parametric studies were conducted to determine the relationship between design parameters of the jellyroll components and the elastic behavior of LIB jellyroll and module. The results obtained in this study provide useful information for both LIB cell developers, at the concept design stage, and engineers of electric vehicles who want to predict the mechanical safety of a battery pack.

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