Mesoscopic Mechanical Analysis of Filled Elastomer with 3D-Finite Element Analysis and Transmission Electron Microtomography

Author:

Akutagawa Keizo1,Yamaguchi Ken1,Yamamoto Atsushi1,Heguri Hisashi1,Jinnai Hiroshi2,Shinbori Yuki2

Affiliation:

1. 1Bridgestone Corporation, 3-1-1, Ogawahigashi-Cho, Kodaira-Shi, Tokyo 187-8531, Japan; email: akutag-k@bridgestone.co.jp

2. 2Kyoto Institute of Technology, Graduate School of Science and Engineering, Kyoto 606-8585, Japan

Abstract

Abstract Analysis of deformation of the filled elastomer in mesoscopic scale was investigated with 3-D FEM (Finite Element Analysis). Combination of 3-D TEMT (Transmission Electron Micro Tomography) and Voxel-FEM enables us to reconstruct mesoscopic scale 3-D image and calculate 3-D strain distribution. To the first approximation, the calculated stress-strain behavior shows a good agreement with the experimental results. The strain concentration over 200% can be seen between carbon black aggregates, even if the overall strain is only 15%. The rubber occluded by carbon black aggregates can also be observed. The virtual rubber model constructed with perfectly dispersed fillers was also calculated. This shows less overall stress than that of the actual filled model reconstructed with 3-D TEMT image. It is found that the occluded rubber can behave as a hard domain and is an important factor of the filler reinforcement effect on rubber.

Publisher

Rubber Division, ACS

Subject

Materials Chemistry,Polymers and Plastics

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