Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading

High density polyethylene (HDPE) can show viscoelastic-viscoplastic behaviors under monotonic loads and a stress softening after reloading under cyclic ones. This sets a challenge in simultaneously representing such response in material constitutive models. In addition, due to the adoption of novel...

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Main Authors: Abdulla Almomani, Suleyman Deveci, Abdel-Hamid I. Mourad, Imad Barsoum
Format: Article
Language:English
Published: Elsevier 2023-01-01
Series:Polymer Testing
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0142941822004329
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author Abdulla Almomani
Suleyman Deveci
Abdel-Hamid I. Mourad
Imad Barsoum
author_facet Abdulla Almomani
Suleyman Deveci
Abdel-Hamid I. Mourad
Imad Barsoum
author_sort Abdulla Almomani
collection DOAJ
description High density polyethylene (HDPE) can show viscoelastic-viscoplastic behaviors under monotonic loads and a stress softening after reloading under cyclic ones. This sets a challenge in simultaneously representing such response in material constitutive models. In addition, due to the adoption of novel accelerated tests at higher temperatures, e.g., 95 °C, the need for a higher temperature calibration is motivated. Therefore, the objective of this study is threefold: (i) to investigate the capability of the three network viscoplastic (TNV) model in capturing HDPE thermo-viscoplasticity under monotonic and cyclic loads, (ii) to report observations on HDPE at various strain-rates and temperatures from 23 °C to 95 °C including the α-relaxation region (iii) to explore the ratcheting behavior of HDPE, i.e., cyclic creep. The FEA analysis based on the calibrated TNV model was successfully able to predict the HDPE behavior under static, quasi-static and dynamic loads. The predicted strain range Δε and mid-range strain εs of the cyclic creep showed good agreements. This implies that the TNV model can be a reliable candidate for HDPE engineering assessments. Findings of this work will have many industrial applications, e.g., products manufacturers or resin producers, in which HDPE is used under complex loads. Similar procedures can be followed for other thermoplastics which lays the basis for establishing a standard calibration guideline.
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spelling doaj.art-96fc92f6fc8544d5ac76d489faf25dfa2023-01-08T04:13:23ZengElsevierPolymer Testing0142-94182023-01-01118107911Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loadingAbdulla Almomani0Suleyman Deveci1Abdel-Hamid I. Mourad2Imad Barsoum3Department of Mechanical and Aerospace Engineering, United Arab Emirates University, Al-Ain, P.O. Box, 15551, United Arab Emirates; Borouge Pte. Ltd, PO, 6951, Abu Dhabi, United Arab EmiratesBorouge Pte. Ltd, PO, 6951, Abu Dhabi, United Arab EmiratesDepartment of Mechanical and Aerospace Engineering, United Arab Emirates University, Al-Ain, P.O. Box, 15551, United Arab Emirates; National Water and Energy Center, United Arab Emirates University, Al Ain, P.O Box, 15551, United Arab Emirates; On Leave from Mechanical Design Department, Faculty of Engineering, Helwan University, Cairo, El Mataria, P.O. Box, 11718, Egypt; Corresponding author. Department of Mechanical and Aerospace Engineering, United Arab Emirates University, Al-Ain, P.O. Box, 15551, United Arab Emirates.Department of Mechanical Engineering, Khalifa University, Abu Dhabi, P.O. Box, 127788, United Arab Emirates; Department of Engineering Mechanics, Royal Institute of Technology – KTH, Teknikringen 8, Stockholm, 100 44, SwedenHigh density polyethylene (HDPE) can show viscoelastic-viscoplastic behaviors under monotonic loads and a stress softening after reloading under cyclic ones. This sets a challenge in simultaneously representing such response in material constitutive models. In addition, due to the adoption of novel accelerated tests at higher temperatures, e.g., 95 °C, the need for a higher temperature calibration is motivated. Therefore, the objective of this study is threefold: (i) to investigate the capability of the three network viscoplastic (TNV) model in capturing HDPE thermo-viscoplasticity under monotonic and cyclic loads, (ii) to report observations on HDPE at various strain-rates and temperatures from 23 °C to 95 °C including the α-relaxation region (iii) to explore the ratcheting behavior of HDPE, i.e., cyclic creep. The FEA analysis based on the calibrated TNV model was successfully able to predict the HDPE behavior under static, quasi-static and dynamic loads. The predicted strain range Δε and mid-range strain εs of the cyclic creep showed good agreements. This implies that the TNV model can be a reliable candidate for HDPE engineering assessments. Findings of this work will have many industrial applications, e.g., products manufacturers or resin producers, in which HDPE is used under complex loads. Similar procedures can be followed for other thermoplastics which lays the basis for establishing a standard calibration guideline.http://www.sciencedirect.com/science/article/pii/S0142941822004329High density polyethyleneConstitutive modelFinite element analysisViscoelasticViscoplasticCyclic loading
spellingShingle Abdulla Almomani
Suleyman Deveci
Abdel-Hamid I. Mourad
Imad Barsoum
Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
Polymer Testing
High density polyethylene
Constitutive model
Finite element analysis
Viscoelastic
Viscoplastic
Cyclic loading
title Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
title_full Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
title_fullStr Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
title_full_unstemmed Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
title_short Constitutive model calibration for the thermal viscoelastic-viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
title_sort constitutive model calibration for the thermal viscoelastic viscoplastic behavior of high density polyethylene under monotonic and cyclic loading
topic High density polyethylene
Constitutive model
Finite element analysis
Viscoelastic
Viscoplastic
Cyclic loading
url http://www.sciencedirect.com/science/article/pii/S0142941822004329
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