A combined experimental–numerical investigation of fracture of polycrystalline cubic boron nitride

Files in This Item:
File Description SizeFormat 
NUMERICS_PAPER done.pdf2.29 MBAdobe PDFDownload
Title: A combined experimental–numerical investigation of fracture of polycrystalline cubic boron nitride
Authors: Carolan, Declan
Ivankovic, Alojz
Murphy, Neal
Permanent link: http://hdl.handle.net/10197/4599
Date: Feb-2013
Online since: 2013-09-25T10:41:33Z
Abstract: Numerical modelling of a series of experimental Single Edge V-Notched Beam tests was carried out for a number of grades of polycrystalline cubic boron nitride using the finite volume method (FV) and cohesive zone model approach. The effect of notch root radius observed experimentally was reproduced numerically via a unique CZM for each material examined. It was also found that the shape of the cohesive zone model can be signiffcant, especially when the material has a relatively high fracture energy. It was also demonstrated that the experimentally observed drop in fracture toughness with increase in test rate was not explainable in terms of the system dynamics. It was found that in order to predict the experimental fracture loads for a range of loading rates, it was necessary to modify the CZM in such a way as to preserve the micro-structural length scale information of the material embedded within the CZM.
Type of material: Journal Article
Publisher: Elsevier
Journal: Engineering Fracture Mechanics
Volume: 99
Start page: 101
End page: 117
Copyright (published version): 2013 Elsevier
Keywords: brittle fracturecohesive zone modelfinite volume methodOpenFOAM-ext
DOI: 10.1016/j.engfracmech.2012.09.008
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

Show full item record

Citations 50

Last Week
Last month
checked on Feb 12, 2019

Google ScholarTM



This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.