Damage modeling using strain gradient based finite element formulation

Putar, Filip and Sorić, Jurica and Lesičar, Tomislav and Tonković, Zdenko (2016) Damage modeling using strain gradient based finite element formulation. = Damage modeling using strain gradient based finite element formulation. In: European Congress on Computational Methods in Applied Sciences and Engineering, 5-.10.06.2016., Hersonissos, Greece.

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Damage modeling using strain gradient based finite element formulation.pdf - Published Version Jezik dokumenta:English

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Abstract

The present study deals with the modeling of quasi-brittle softening phenomena using the two dimensional C1 continuity triangular finite element. The formulation of damage model is based on an isotropic damage law applied to the higher-order stress-strain constitutive relations originating from the full strain gradient theory. Both homogeneous and heterogeneous materials are considered by employing the second-order homogenization procedure to obtain the required constitutive matrices. For this purpose, two different heterogeneous representative volume elements are employed, where the results of the softening analyses are compared with those obtained for the corresponding homogeneous materials with equivalent internal length scales. The derived finite element formulation is implemented into the finite element program ABAQUS using user subroutines. Finally, accuracy and efficiency of the proposed higher-order gradient model are demonstrated by the modeling of a stretched plate weakened in the middle, usually used as a benchmark in strain softening analyses.

Item Type: Conference or Workshop Item (Lecture)
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 200 Department of Engineering Mechanics > 210 Chair of Mechanics and Strength of Materials
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (02.12.2016.)
Date Deposited: 02 Dec 2016 08:34
Last Modified: 01 Feb 2018 08:17
URI: http://repozitorij.fsb.hr/id/eprint/7108

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