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

2017 ◽  
Vol 139 (4) ◽  
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.

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

2017 ◽  
Vol 47 (3) ◽  
pp. 281-293 ◽  
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

Investigating the elastic behavior of carbon nanocone reinforced nanocomposites

2020 ◽  
Vol 234 (14) ◽  
pp. 2908-2922
Author(s):  
Bhavik A Ardeshana ◽  
Umang B Jani ◽  
Ajay M Patel ◽  
Anand Y Joshi
Keyword(s):  
Young’S Modulus ◽  
Representative Volume Element ◽  
Volume Fraction ◽  
Young's Modulus ◽  
Volume Element ◽  
Elastic Behavior ◽  
Representative Volume ◽  
Simulation Based ◽  
Load Carrying ◽  
The Matrix

This paper deals with the evaluation of the effective mechanical properties of carbon nanocone centered composites using a 3D nanoscale representative volume element based on continuum mechanics. For extracting the effective material constants, the authors have taken the basis of theories of elasticity. The results constituting the effective Young's modulus of the composite and Poisson's ratio for different parameters stated above have been presented and validated with rule of mixtures. It can be clearly visualized from the results that the load-carrying capacities of carbon nanocones in the representative volume elements are quite significant and the same has been demonstrated with subsequent cases. Simulation-based modeling can show a considerable part in the improvement of carbon nanocone-based composites by providing results that help in appreciative of the performance of composites. Moreover, for a volume fraction of the CNC as 2.33% in a cylindrical representative volume element and a 19.2° apex angle of the cone, the stiffness of the composite can increase as many as 4.9 times of the matrix. Similarly for hexagonal and square, the increase is in terms of 4.3 and 3.01 times respectively. Cylindrical representative volume element is the best as it provides the maximum reinforcement in terms of effective Young's modulus of the composite. Carbon nanocone-based composites provide results that help in understanding the elastic behavior of composites.

scholarly journals Computational modelling of particulate-reinforced materials up to high volume fractions: Linear elastic homogenisation

2017 ◽  
Vol 233 (6) ◽  
pp. 1101-1116
Author(s):  
Timothée Gentieu ◽  
Anita Catapano ◽  
Julien Jumel ◽  
James Broughton
Keyword(s):  
Representative Volume Element ◽  
Mechanical Response ◽  
Volume Fraction ◽  
Numerical Models ◽  
Computational Modelling ◽  
Volume Element ◽  
Design Parameters ◽  
Geometrical Parameters ◽  
Representative Volume ◽  
Analytical Approaches

This work focuses on the analysis of the micro and macroscopic mechanical response of particle-reinforced composites. A particular attention is paid to the influence of two fundamental design parameters, i.e. the particles shape and their volume fraction (up to very high values ranging from 0 to almost 0.8), on the overall mechanical response of the structure as well as on the resulting elastic symmetry of the material. The strain energy-based homogenisation technique of periodic media is here applied to a 2D finite element model of a representative volume element of the composite. Different algorithms are developed to generate, with a good level of accuracy, the real microstructure of the composite material characterised by circular as well as polygonal particles. Moreover, for each studied configuration, a link between the geometrical parameters of the microstructure (particles shape, size, distribution, and volume fraction) and the size of the representative volume element is also provided in order to properly describe the constitutive behaviour of the composite at the macroscopic scale. The numerical results are compared with analytical models taken from the literature to prove on the one hand the limitations of the analytical approaches and on the other hand the effectiveness of the proposed numerical models.

scholarly journals Representative volume element based micromechanical modelling of rod shaped glass filled epoxy composites

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Aanchna Sharma ◽  
Yashwant Munde ◽  
Vinod Kushvaha
Keyword(s):  
Representative Volume Element ◽  
Poisson’S Ratio ◽  
Volume Fraction ◽  
Tensile Modulus ◽  
Volume Element ◽  
Poisson's Ratio ◽  
Epoxy Composites ◽  
Micromechanical Modeling ◽  
Representative Volume ◽  
Shaped Glass

AbstractIn this study, Representative Volume Element based micromechanical modeling technique has been implemented to assess the mechanical properties of glass filled epoxy composites. Rod shaped glass fillers having an aspect ratio of 80 were used for preparing the epoxy composite. The three-dimensional unit cell model of representative volume element was prepared with finite element analysis tool ANSYS 19 using the periodic square and hexagonal array with an assumption that there is a perfect bonding between the filler and the epoxy matrix. Results revealed that the tensile modulus increases and Poisson’s ratio decreases with increase in the volume fraction of the filler. To study the effect of filler volume fraction, the pulse echo techniques were used to experimentally measure the tensile modulus and Poisson’s ratio for 5% to 15% volume fraction of the filler. A good agreement was found between the RVE based predicted values and the experimental results.

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