Study of void growth and coalescence in HDPE material: a numerical investigation using computational voided cells

• Autorzy: Cherief M. N. D. , Benguediab M. , Elmeguenni M. , Reffas A.
• Języki publikacji: EN

Abstrakty

EN

This paper presents a study about the effects of initial porosity and stress triaxiality on void growth and coalescence in High-density polyethylene (HDPE) material. Two approaches are used to modulate the representative material volume: The first one is a unit cell with a spherical void at the center (Voided cell model), and the second is a unit cell containing the same void fraction of volume and obeying to the constitutive relations of Gurson-Tvergaard-Needelman (GTN model). Detailed analyses of finite element gave us: the equivalent stress-strain response, the void growth and coalescence behavior of the representative material volume. Results show that the stress triaxiality and the initial void volume fraction are strongly effective and depended on.

Słowa kluczowe

EN

void growth; coalescence; damage; HDPE; polymer; triaxiality

PL

wzrost pustki; koalescencja; uszkodzenie; HDPE; polimer; trójosiowość

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. 21, nr 3
• Strony: 467--483
• Opis fizyczny: Bibliogr. 39 poz., rys., wykr.

Twórcy

autor

Cherief M. N. D.

• University Djillali Liabes of Sidi Bel Abbes, BP 89 City Ben Mhidi, Sidi Bel Abbes 22000, Algeria

autor

Benguediab M.

• University Djillali Liabes of Sidi Bel Abbes, BP 89 City Ben Mhidi, Sidi Bel Abbes 22000, Algeria

autor

Elmeguenni M.

• University Djillali Liabes of Sidi Bel Abbes, BP 89 City Ben Mhidi, Sidi Bel Abbes 22000, Algeria

autor

Reffas A.

• Department of Engineering Mechanics, University of Sciences and Technology of Oran, El Mnaouar, BP 1505, Bir El Djir 31000, Algeria

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).