A micro-mechanical model of viscoelastic woven fabric composites using operator based approach

A. Bhattacharjee and H. Roy

Mathematics and Computers in Simulation (MATCOM), 2021, vol. 190, issue C, 587-606

Abstract: The present work involves the development of micromechanics based model of the woven fabric reinforced polymer composites and studying their dynamics. A higher-order finite element model of woven fibre composite beam is established after considering the modulus operator for both fibre and matrix. This micromechanical model is further validated with two other methods. In the first method, equivalent composite samples are prepared and tested in dynamic mechanical analyser to obtain the storage modulus and loss factor for a defined range of frequency. The experimental data are used to calculate viscoelastic parameters of the modulus operator and further utilised to bring down the equations of motion. In another method, modal testing of the same composite beam is conducted using an impact hammer connected to the Bruel & Kjaer FFT analyser. Modal parameters obtained from three techniques are compared to show the correctness of the mathematical model. The proposed micromechanics based model may be useful to accurately estimate the material characteristics of the viscoelastic composite without fabricating the samples or conducting explicit experiments.

Keywords: Woven fabric composite; Micromechanics based damping model; Frequency-dependent properties; Viscoelastic parameters; Higher-order finite element model; Dynamic mechanical analyser (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:190:y:2021:i:c:p:587-606

DOI: 10.1016/j.matcom.2021.06.002

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