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  Volume 4, Number 1, March 2022 , pages 101-115
DOI: https://doi.org/10.12989/cme.2022.4.1.101
 
 open access

Numerical study on viscoelastic behavior of particulate composites based on the mean-field based micromechanics model
Hangil You and Gun Jin Yun

 
Abstract
    This paper investigates the effects of constituents' properties (i.e., stiffness ratio, volume fraction, and interfacial stiffness) on the viscoelastic behavior through the mean-field-based micromechanics model. The stress prediction of the proposed micromechanics model for the viscoelastic composites is verified through the direct numerical simulation (DNS) using a finite element model with different volume fractions, materials properties, and interphase layers. The stress prediction accuracy is studied under cyclic loading conditions. The stress prediction accuracy is better when the volume fraction is lower and the interphase layer is modeled. Finally, the effects of the constituent's properties, volume fraction, and interfacial imperfection on the tangent delta and relaxation behavior of the composites are examined.
 
Key Words
    homogenization; Mori-Tanaka method; micromechanics; particulate composites; viscoelastic behavior
 
Address
Hangil You: Department of Aerospace Engineering, Seoul National University, Gwanak-gu, Seoul, 08826, Korea
Gun Jin Yun: Department of Aerospace Engineering, Seoul National University, Gwanak-gu, Seoul, 08826, Korea; Institute of Advanced Aerospace Technology, Seoul National University, 08826, Seoul, Korea
 

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