Please use this identifier to cite or link to this item:
|Title:||A hybrid approach to determine ductile fracture resistance|
|Authors:||Qian, X. |
|Source:||Qian, X., Yang, W. (2011). A hybrid approach to determine ductile fracture resistance. Procedia Engineering 10 : 319-324. ScholarBank@NUS Repository. https://doi.org/10.1016/j.proeng.2011.04.055|
|Abstract:||This article describes a hybrid approach to determine the ductile fracture resistance for laboratory specimens, combining both the numerically computed and experimentally measured load (P) versus load-line displacement (LLD) relationships for metallic fracture specimens. The hybrid approach employs the same principle as the conventional, multiple-specimen experimental method in determining the energy release rate. This method computes the P-LLD curves from multiple finite element (FE) models, each with a different crack depth. The experimental procedure measures the P-LLD curve from a standard fracture specimen with a growing crack. The intersections between the experimental P-LLD curve and the numerical P-LLD curves from multiple FE models dictate the LLD levels to compute the strain energy (U) using the area under the numerical P-LLD curves. This approach eliminates the requirement of using multiple fracture specimens and the requirement of measuring the compliance of the specimen via a multiple unloading procedure. In addition, this approach does not require the measurement of the crack-mouth opening displacement (CMOD). The validation procedure shows very accurate prediction of the J-Δa resistance curve for SE(B) specimens under mode I loading. © 2011 Published by Elsevier Ltd.|
|Source Title:||Procedia Engineering|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 15, 2018
WEB OF SCIENCETM
checked on Feb 5, 2018
checked on Feb 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.