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Modeling of a Three-Dimensional Spherulite Microstructure in Semicrystalline Polymers

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Numerical Mathematics and Advanced Applications ENUMATH 2015

Part of the book series: Lecture Notes in Computational Science and Engineering ((LNCSE,volume 112))

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Abstract

A finite element (FE) model, that explicitly discretizes a single 3D spherulite is proposed. A spherulite is a two-phase microstructure consisting of amorphous and crystalline regions. Crystalline regions, that grow from a central nucleus in the form of lamellae, have particular lattice orientations. In the FE analyses, 8-chain and crystal viscoplasticity constitutive models are employed. Stress-strain distributions and slip system activities in the spherulite microstructure are studied and found to be in good agreement with the literature. Influences of the crystallinity ratio on the yield stress and the initial Young’s modulus are also investigated.

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Acknowledgements

This work was supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK), Grant No. 111M646.

Author information

Authors and Affiliations

  1. Department of Civil Engineering, Middle East Technical University, Ankara, Turkey

    H. Emre Oktay

  2. Department of Aerospace Engineering, Middle East Technical University, Ankara, Turkey

    Ercan Gürses

Authors
  1. H. Emre Oktay
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  2. Ercan Gürses
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Corresponding author

Correspondence to Ercan Gürses .

Editor information

Editors and Affiliations

  1. Mathematics & Applied Mathematics, Middle East Technical University Mathematics & Applied Mathematics, Ankara, Turkey

    Bülent Karasözen

  2. Dept of Computer Engg, Middle East Technical Univ Dept of Computer Engg, Cankaya, Ankara, Turkey

    Murat Manguoğlu

  3. Middle East Technical University Mathematics & Institute of Applied Mathe, Ankara, Turkey

    Münevver Tezer-Sezgin

  4. Civil Engineering & Applied Mathematics, Middle East Technical University, Ankara, Turkey

    Serdar Göktepe

  5. Institute of Applied Mathematics, Middle East Technical University Institute of Applied Mathematics, Ankara, Turkey

    Ömür Uğur

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Oktay, H.E., Gürses, E. (2016). Modeling of a Three-Dimensional Spherulite Microstructure in Semicrystalline Polymers. In: Karasözen, B., Manguoğlu, M., Tezer-Sezgin, M., Göktepe, S., Uğur, Ö. (eds) Numerical Mathematics and Advanced Applications ENUMATH 2015. Lecture Notes in Computational Science and Engineering, vol 112. Springer, Cham. https://doi.org/10.1007/978-3-319-39929-4_55

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