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Computational Modeling of Polymer Matrix Based Textile Composites.

Michal Šejnoha1, Jan Vorel1, Soňa Valentová1

  • 1Department of Mechanics, Faculty of Civil Engineering, Czech Technical University in Prague, 166 29 Prague, Czech Republic.

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|August 26, 2022
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Summary

This study presents a multiscale analysis for basalt fabric-epoxy composites. The approach combines experimental data with computational modeling for accurate prediction of composite behavior.

Keywords:
Leonov modelMori–Tanaka methodbasalt fibersmultiscale computational homogenizationpolymer matrixwoven composite

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Area of Science:

  • Materials Science
  • Computational Mechanics
  • Composite Materials

Background:

  • Multiscale analysis is crucial for understanding complex composite behaviors.
  • Plain weave basalt fabric reinforced epoxy composites require advanced modeling techniques.
  • Existing models may not fully capture the rate-dependent and nonlinear viscoelastic properties of these materials.

Purpose of the Study:

  • To develop a simple yet reliable multiscale analysis approach for basalt fabric-epoxy composites.
  • To accurately model the rate-dependent behavior of the epoxy matrix and basalt fibers.
  • To validate a computational scheme integrating micromechanical and finite element methods.

Main Methods:

  • Experimental characterization of basalt fibers (nanoindentation) and epoxy matrix (rate-dependent behavior).
  • Calibration of the generalized Leonov model for the polymer matrix.
  • Modification and application of the Mori-Tanaka micromechanical model at the yarn level.
  • Development of a coupled two-scale computational scheme using Mori-Tanaka and finite element computational homogenization.

Main Results:

  • The generalized Leonov model effectively captures the rate-dependent behavior of the epoxy matrix.
  • Nanoindentation provided essential elastic properties for basalt fibers.
  • The modified Mori-Tanaka model accurately describes the nonlinear viscoelastic response of unidirectional composites.
  • The proposed two-scale approach demonstrates efficiency and reliability for multiscale analysis.

Conclusions:

  • The presented multiscale modeling methodology offers an efficient and accurate approach for analyzing plain weave basalt fabric-epoxy composites.
  • The integration of experimental data and computational models is key to predicting complex material responses.
  • This work provides a robust framework for the design and analysis of advanced composite materials.