Distribution of nonliner relaxation

This work is devoted to the numerical and experimental study of annealing effects on microstructure and mechanical properties of the high-density polyethylene (HDPE). Uniaxiale tension tests are conducted at 250 C in order to characterize the mechanical behavior of HDPE. The influence of the anneali...

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Bibliographic Details
Published inContinuum mechanics and thermodynamics Vol. 26; no. 3; p. 373
Main Authors Ferhoum, R, Aberkane, M, Ouali, M. Ould
Format Journal Article
LanguageEnglish
Published Springer 01.05.2014
Subjects
Annealing
Calorimetry
Infrared spectroscopy
Mechanical properties
Polyethylene
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Summary:This work is devoted to the numerical and experimental study of annealing effects on microstructure and mechanical properties of the high-density polyethylene (HDPE). Uniaxiale tension tests are conducted at 250 C in order to characterize the mechanical behavior of HDPE. The influence of the annealing treatment on the material microstructure is examined by the Fourier transform infrared spectroscopy, and microstructures are characterized using differential scanning calorimetry. The distribution of nonlinear relaxation approach is adopted to describe the mechanical response of virgin and annealed HDPE. Annealing effects are incorporated into the constitutive model by introducing the microstructure (crystallinity degree) evolution on the macroscopic response of the material. The numerical predictions of the model are in good agreement with experimental results for the different states of the material. Keywords Annealing * HDPE * Large strain * DNLR
ISSN:0935-1175
1432-0959
DOI:10.1007/s00161-013-0306-9