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Thermo-mechanical coupling of a viscoelastic-viscoplastic model for thermoplastic polymers : thermodynamical derivation and experimental assessment

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Abstract
In this paper, a new constitutive model is proposed for the behavior of thermoplastic polymers under non-isothermal conditions. The model couples linear viscoelasticity, viscoplasticity and thermal effects. It is formulated within the framework of irreversible thermodynamics. The total strain is the sum of viscoelastic, viscoplastic and thermal strains. General hereditary integrals describe the thermo-viscoelastic response. The viscoplastic part accounts for both isotropic and kinematic hardenings. The stress-strain response and the material self-heating are predicted and compared to experimental data on Polyamide 66 (PA66) and Polypropylene (PP). Good agreement between the numerical simulations and experimental data was obtained for the two materials.
Keywords
HIGH-DENSITY POLYETHYLENE, CONSTITUTIVE MODEL, DEFORMATION-BEHAVIOR, STRAIN-RATE, SEMICRYSTALLINE POLYMER, MECHANICAL-BEHAVIOR, GLASSY-POLYMERS, FINITE STRAINS, PART I, TEMPERATURE, Polymeric material, Constitutive behavior, Rate-dependent material, Thermomechanical processes, Self-heating

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Chicago
Krairi, Anouar, I. Doghri, Joanna Schalnat, G. Robert, and Wim Van Paepegem. 2019. “Thermo-mechanical Coupling of a Viscoelastic-viscoplastic Model for Thermoplastic Polymers : Thermodynamical Derivation and Experimental Assessment.” International Journal of Plasticity 115: 154–177.
APA
Krairi, A., Doghri, I., Schalnat, J., Robert, G., & Van Paepegem, W. (2019). Thermo-mechanical coupling of a viscoelastic-viscoplastic model for thermoplastic polymers : thermodynamical derivation and experimental assessment. INTERNATIONAL JOURNAL OF PLASTICITY, 115, 154–177.
Vancouver
1.
Krairi A, Doghri I, Schalnat J, Robert G, Van Paepegem W. Thermo-mechanical coupling of a viscoelastic-viscoplastic model for thermoplastic polymers : thermodynamical derivation and experimental assessment. INTERNATIONAL JOURNAL OF PLASTICITY. Oxford: Elsevier; 2019;115:154–77.
MLA
Krairi, Anouar et al. “Thermo-mechanical Coupling of a Viscoelastic-viscoplastic Model for Thermoplastic Polymers : Thermodynamical Derivation and Experimental Assessment.” INTERNATIONAL JOURNAL OF PLASTICITY 115 (2019): 154–177. Print.
@article{8612384,
  abstract     = {In this paper, a new constitutive model is proposed for the behavior of thermoplastic polymers under non-isothermal conditions. The model couples linear viscoelasticity, viscoplasticity and thermal effects. It is formulated within the framework of irreversible thermodynamics. The total strain is the sum of viscoelastic, viscoplastic and thermal strains. General hereditary integrals describe the thermo-viscoelastic response. The viscoplastic part accounts for both isotropic and kinematic hardenings. The stress-strain response and the material self-heating are predicted and compared to experimental data on Polyamide 66 (PA66) and Polypropylene (PP). Good agreement between the numerical simulations and experimental data was obtained for the two materials.},
  author       = {Krairi, Anouar and Doghri, I. and Schalnat, Joanna and Robert, G. and Van Paepegem, Wim},
  issn         = {0749-6419},
  journal      = {INTERNATIONAL JOURNAL OF PLASTICITY},
  keywords     = {HIGH-DENSITY POLYETHYLENE,CONSTITUTIVE MODEL,DEFORMATION-BEHAVIOR,STRAIN-RATE,SEMICRYSTALLINE POLYMER,MECHANICAL-BEHAVIOR,GLASSY-POLYMERS,FINITE STRAINS,PART I,TEMPERATURE,Polymeric material,Constitutive behavior,Rate-dependent material,Thermomechanical processes,Self-heating},
  language     = {eng},
  pages        = {154--177},
  publisher    = {Elsevier},
  title        = {Thermo-mechanical coupling of a viscoelastic-viscoplastic model for thermoplastic polymers : thermodynamical derivation and experimental assessment},
  url          = {http://dx.doi.org/10.1016/j.ijplas.2018.11.016},
  volume       = {115},
  year         = {2019},
}

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