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Peridynamic model for nonlinear viscoelastic creep and creep rupture of Polypropylene


Azizi, Muhammad Azim and Mohd Ihsan, Ahmad Kamal Ariffin (2019) Peridynamic model for nonlinear viscoelastic creep and creep rupture of Polypropylene. Journal of Mechanical Engineering and Sciences, 13 (4). pp. 5735-5752. ISSN 2289-4659; ESSN: 2231-8380


This paper presents the peridynamic numerical method for nonlinear viscoelastic creep behaviour which consists of primary, secondary, tertiary creep stages and creep rupture. A nonlinear viscoelastic creep constitutive equation based on internal state variable (ISV) theory which covers four creep stages is examined. The viscoelastic equation is substituted into material parameter in the peridynamic equation to derive a new peridynamic method with two time parameters i.e. numerical time and real time. The parameters of the viscoelastic equation is analyzed and evaluated. In validating this peridynamic method, a comparison is made between numerical and experimental data. The peridynamic method for nonlinear viscoelastic creep behaviour (VE-PD) is approved by the good similarity between numerical and experimental creep strain curves with overall difference of 10.67%. The nonlinearity of experimental and numerical data is adequately similar as the error between experimental and numerical curves of secondary stage strain rate against load is 8.022%. The shapes of fractured numerical specimen show good resemblance with the experimental result as well.

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Official URL or Download Paper: https://journal.ump.edu.my/jmes/article/view/451

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.15282/jmes.13.4.2019.02.0458
Publisher: Faculty of Mechanical Engineering, Universiti Malaysia Pahang
Keywords: Peridynamic; Viscoelastic; Creep; Polypropylene; Nonlinear; Fracture
Depositing User: Ms. Nida Hidayati Ghazali
Date Deposited: 06 May 2021 20:07
Last Modified: 06 May 2021 20:07
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=https://doi.org/10.15282/jmes.13.4.2019.02.0458
URI: http://psasir.upm.edu.my/id/eprint/81676
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