Evaluation of Mechanical and Thermal Behaviour of Particle-Reinforced Metal Matrix Composite Using Representative Volume Element Approach

2018 ◽  
pp. 415-425
Author(s):  
P. Vignesh ◽  
R. Krishna Kumar ◽  
M. Ramu
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Thermal Behaviour ◽  
Representative Volume Element ◽  
Metal Matrix ◽  
Volume Element ◽  
Representative Volume ◽  
Element Approach

Representative Volume Element for Mechanical Properties of Carbon Nanotube Nanocomposites Using Stochastic Finite Element Analysis

2020 ◽  
Vol 142 (3) ◽  
Author(s):  
Seyed Hamid Reza Sanei ◽  
Randall Doles
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Representative Volume Element ◽  
Volume Element ◽  
Length Scale ◽  
Stochastic Finite Element ◽  
Element Analysis ◽  
Representative Volume ◽  
Element Approach ◽  
Stochastic Finite Element Analysis

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.

A Representative Volume Element Approach for Pore-Scale Modeling of Fuel Cell Materials

2019 ◽  
Vol 41 (1) ◽  
pp. 131-139 ◽  
Author(s):  
Eric A. Wargo ◽  
Anne C. Hanna ◽  
Ahmet Cecen ◽  
Surya R. Kalidindi ◽  
Emin C. Kumbur
Keyword(s):  
Fuel Cell ◽  
Representative Volume Element ◽  
Volume Element ◽  
Pore Scale ◽  
Representative Volume ◽  
Fuel Cell Materials ◽  
Scale Modeling ◽  
Pore Scale Modeling ◽  
Element Approach

scholarly journals A Computational Study on the Use of an Aluminium Metal Matrix Composite and Aramid as Alternative Brake Disc and Brake Pad Material

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Nosa Idusuyi ◽  
Ijeoma Babajide ◽  
Oluwaseun. K. Ajayi ◽  
Temilola. T. Olugasa
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Thermal Behaviour ◽  
Temperature Difference ◽  
Metal Matrix ◽  
Computational Study ◽  
Brake Disc ◽  
Brake Pad ◽  
Braking Process ◽  
Aluminium Metal

A computational model for the heat generation and dissipation in a disk brake during braking and the following release period has been formulated. The model simulates the braking action by investigating the thermal behaviour occurring on the disc and pad surfaces during this period. A comparative study was made between grey cast iron (GCI), asbestos, Aluminium metal matrix composite (AMC), and aramid as brake pad and disc materials. The braking process and following release period were simulated for four material combinations, GCI disc and Asbestos pad, GCI disc and Aramid pad, AMC disc and Asbestos pad, AMC disc and Aramid pad using COMSOL Multiphysics software. The results show similarity in thermal behaviour at the contact surface for the asbestos and aramid brake pad materials with a temperature difference of 1.8 K after 10 seconds. For the brake disc materials, the thermal behaviour was close, with the highest temperature difference being 9.6 K. The GCI had a peak temperature of 489 K at 1.2 seconds and AMC was 465.5 K but cooling to 406.4 K at 10 seconds, while the GCI was 394.7 K.

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