The creep and fracture behaviour of the polyethylene PE100

Skozrit, Ivica and Tonković, Zdenko and Kodvanj, Janoš (2014) The creep and fracture behaviour of the polyethylene PE100. = The creep and fracture behaviour of the polyethylene PE100. In: 12th International Conference on Fracture and Damage Mechanics, FDM 2013, 17-19.09.2013., Sardinia; Italy.

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This paper presents an experimental and numerical study on the creep and fracture behaviour of the polyethylene PE100. The experimental procedure includes monotonic tests on the standard tensile specimen as well as creep-fracture tests on the axisymmetrically cracked specimens. Based on the experimental results, a new primary/secondary creep constitutive model is proposed to simulate the nonlinear and time dependent behaviour of considered material. The material parameters are computed from a leastsquare fit to experimental data obtained from tests at 80 °C. Within the framework of numerical investigations an algorithm for the integration of the constitutive law is derived. The derived algorithm in conjunction with the consistent tangent matrix is implemented in the finite element (FE) code ABAQUS by using the user subroutine CREEP. The accuracy of the proposed numerical algorithm is validated by comparing with experimental results. © (2014) Trans Tech Publications.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): C-integral; Consistent tangent matrix; Creep constitutive models; Experimental and numerical studies; Experimental procedure; Finite element codes; Numerical investigations; Time-dependent behaviour; ABAQUS; Algorithms; Experiments; Finite element method; Fracture; Fracture mechanics; Fracture testing; Polyethylenes; Creep
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 200 Department of Engineering Mechanics > 210 Chair of Mechanics and Strength of Materials
200 Department of Engineering Mechanics > 220 Chair of Experimental Mechanics
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Date Deposited: 28 May 2015 09:25
Last Modified: 24 Nov 2016 16:09

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