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Mesoscale Modeling of Polymer Concrete Dynamic Properties.

Paweł Dunaj1

  • 1Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, al. Piastów 19, 70-310 Szczecin, Poland.

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|November 14, 2023
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Summary

Predicting composite material dynamic properties is crucial. Mesoscale finite element modeling with substructural identification accurately models polymer concrete, including damping effects from the interfacial transition zone (ITZ).

Keywords:
dampingfinite element methodheterogenous materialmesoscale modelingmineral castingpolymer concretesubstructural identification

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Computational Mechanics

Background:

  • Accurate prediction of composite material dynamic properties is essential during the design phase.
  • Mesoscale finite element modeling offers a powerful approach for simulating these properties.
  • Polymer concrete, a widely used composite, requires detailed modeling for performance prediction.

Purpose of the Study:

  • To present a mesoscale modeling approach for predicting the dynamic properties of polymer concrete.
  • To utilize substructural identification, a model updating technique, for enhanced accuracy.
  • To investigate the contribution of different components, including the interfacial transition zone (ITZ), to the overall dynamic behavior.

Main Methods:

  • Finite element modeling (FEM) was employed to construct a mesoscale model of a polymer concrete beam.
  • The model was decoupled into substructures: polymer matrix, aggregates, and the interfacial transition zone (ITZ).
  • Substructural identification, based on frequency response functions, was used for iterative model updating and parameter determination, including damping.

Main Results:

  • The mesoscale finite element model successfully predicted the dynamic properties of the polymer concrete beam.
  • Substructural identification enabled the accurate determination of parameters for substructures like the ITZ, which cannot be isolated.
  • The method quantified the damping contribution of the ITZ to the composite structure.

Conclusions:

  • Mesoscale finite element modeling combined with substructural identification is an effective method for predicting the dynamic properties of polymer concrete.
  • This approach accurately accounts for damping effects, particularly those originating from the interfacial transition zone.
  • The study highlights the capability of substructural identification to model complex composite behaviors and determine parameters of unisolatable components.