Please use this identifier to cite or link to this item:
Title: Stress intensity factor calculation based on the work of external forces
Authors: Antunes, F. V. 
Ferreira, J. M. 
Byrne, J. 
Issue Date: 1999
Citation: International Journal of Fracture. 98:1 (1999) 1-14
Abstract: Abstract The external forces method is a numerical method for K calculation based on the finite element method. It uses the work of the external forces W for the calculation of the energy release rate and is particularly advantageous when that forces are applied far from the crack front. The method was applied to a corner crack geometry with the objective of studying its accuracy. Good results were obtained for a wide range of virtual crack displacements (0.03% < ?a/a < 6%) considering 4 values of W along with a polynomial regression of order 3. For that choice of parameters the inaccuracy of K is mainly due to FEM errors. A great sensitivity of K to FEM errors was observed, however accurate values of K were obtained, with errors lower than 2 percent. So, the use of the external forces method for the calculation of K is recommended, considering its simplicity and accuracy.
DOI: 10.1023/A:1018684932071
Rights: openAccess
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
obra.pdf184.1 kBAdobe PDFView/Open
Show full item record

Page view(s) 20

checked on Oct 2, 2019


checked on Oct 2, 2019

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.