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Uniaxial nonlinear viscoelastic viscoplastic modeling of polypropylene

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Abstract

This paper presents the application of the Schapery viscoelastic and the Perzyna viscoplastic models to strain recovery data of polypropylene. In a previous study, the recovery of strain after monotonic uniaxial tensile loading was measured to gather information on the viscoelasticity and viscoplasticity. The viscoplastic strains from several load histories were determined and are used to calibrate the viscoplastic model. The parameters of the one-dimensional Schapery model are then found by nonlinear optimization using the strain recovery history. The prediction of stress relaxation and creep behavior is investigated.

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Authors and Affiliations

  1. Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, 8700, Leoben, Austria

    Daniel Tscharnuter

  2. Borealis Polyolefine GmbH, St. Peter Strasse 25, 4021, Linz, Austria

    Michael Jerabek

  3. Institute of Polymer Product Engineering, Johannes Kepler University Linz, Altenbergerstrasse 69, 4021, Linz, Austria

    Zoltan Major

  4. Chair of Materials Science and Testing of Polymers, University of Leoben, Otto-Glöckel-Strasse 2, 8700, Leoben, Austria

    Gerald Pinter

Authors
  1. Daniel Tscharnuter
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  2. Michael Jerabek
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  3. Zoltan Major
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  4. Gerald Pinter
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Correspondence to Daniel Tscharnuter.

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Tscharnuter, D., Jerabek, M., Major, Z. et al. Uniaxial nonlinear viscoelastic viscoplastic modeling of polypropylene. Mech Time-Depend Mater 16, 275–286 (2012). https://doi.org/10.1007/s11043-011-9158-5

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  • DOI: https://doi.org/10.1007/s11043-011-9158-5

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