Original scientific paper

https://doi.org/10.17559/TV-20140723162324

Investigation of the mixed-mode fracture in delamination tests: numerical simulations using cohesive zone and partitioning methods

Josip Kačmarčik orcid.org/0000-0002-5219-2062 ; Faculty of Mechanical Engineering, University of Zenica, Fakultetska 1, 72000 Zenica, Bosnia and Herzegovina
Pejo Konjatić orcid.org/0000-0002-1516-3027 ; Mechanical Engineering Faculty in Slavonski Brod, Josip Juraj Strossmayer University of Osijek, Trg I. B. Mažuranić 2, 35000 Slavonski Brod, Republic of Croatia
Aleksandar Karač orcid.org/0000-0002-9199-1350 ; Faculty of Mechanical Engineering, University of Zenica, Fakultetska 1, 72000 Zenica, Bosnia and Herzegovina

Abstract

Delamination (fracture) tests have been numerically investigated using various cohesive zone properties. The test utilises asymmetric and symmetric double cantilever beam specimens loaded with bending moment. Energy release rate contributions from mode I and mode II fracture are calculated using a global and local approach. Mode-mixities results are presented and analysed. The numerical partitioning results for different configurations are compared to two analytical partitioning theories, namely, after Williams and after Hutchinson and Suo. Opposite to these theories, partitioning is observed to be dependent on cohesive zone properties.

Keywords

cohesive zone; delamination tests; mixed-mode fracture; mixed-mode partitioning; numerical simulation

Hrčak ID:

139756

URI

https://hrcak.srce.hr/139756

Publication date:

15.6.2015.

Article data in other languages: croatian

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