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Experimental and numerical assessment of the work of fracture in injection-moulded low-density polyethylene
Linné universitetet, SWE.
Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
Tetra Pak AB, SWE.
Malmö Högskola.
2018 (Engelska)Ingår i: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, ISSN 0013-7944, Vol. 192, s. 1-11Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The fracture mechanics properties of injection-moulded low-density polyethylene (LDPE) sheets were investigated both experimentally and numerically. The total work of fracture was determined experimentally, by means of fracture mechanics testing of sheets of injection-moulded LDPE with side cracks of different lengths. A multi-specimen method, proposed by Kim and Joe (1987), was employed. The total work of fracture was estimated to 13 kJ/m2. The experiments were simulated numerically using the finite element method. Crack growth was enabled by inclusion of a cohesive zone, and the constitutive response of this zone was governed by a traction-separation law. The local (or essential) work of fracture was estimated through numerical analyses, where the initiation of crack growth was simulated and the outcome was compared to the experimental results. The local (i.e. essential) work of fracture was estimated to 1.7 kJ/m2, which is consistent with previous experimental measurements for the material in question. The total work of fracture, retrieved from the present experiments, agreed well with the far field values of the J-integral in the numerical analyses. © 2018 The Authors

Ort, förlag, år, upplaga, sidor
Elsevier, 2018. Vol. 192, s. 1-11
Nyckelord [en]
Abaqus, Cohesive Energy, FEM, Fracture, Injection-moulding, Low-density, Polyethylene
Nationell ämneskategori
Annan maskinteknik
Identifikatorer
URN: urn:nbn:se:bth-15972DOI: 10.1016/j.engfracmech.2018.02.004ISI: 000427628100001OAI: oai:DiVA.org:bth-15972DiVA, id: diva2:1192237
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Model Driven Development and Decision Support – MD3S, KK-stiftelsen
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Tillgänglig från: 2018-03-22 Skapad: 2018-03-22 Senast uppdaterad: 2021-01-07Bibliografiskt granskad

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Förlagets fulltexthttps://www.sciencedirect.com/science/article/pii/S0013794417310548

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Andreasson, Eskil

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