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Variable singularity boundary element and its applications in computation of SIFs

DSpace at IIT Bombay

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Title Variable singularity boundary element and its applications in computation of SIFs
 
Creator MUKHOPADHYAY, NK
MAITI, SK
KAKODKAR, A
 
Subject stress intensity factors
integral based computation
finite-element
thermal singularities
kinked cracks
bem
formulation
fields
variable order strain singularity
variable order traction singularity
boundary element
mechanical loading on crack
modified crack closure integral
stress intensity factor
accuracy of sif computation
 
Description Two boundary elements have been proposed for simulation of variable order singularities in two dimensions. The first can model the variable order strain singularity near a crack tip and the second can simulate both the strain and traction. These elements can be easily incorporated in a standard boundary element computer programme. The elements are useful for computation of stress intensity factors (SIFs) in fracture mechanics. To improve the accuracy of such computations further, a modified crack closure integral (MCCI) based method for mechanical loading are presented. Examples of mode I and mixed mode crack problems are examined to illustrate the performance of the proposed elements and the MCCI based calculations. The effects of order of Gauss quadrature associated with such elements on the accuracy of the SIFs are also reported. (. .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-27T02:51:04Z
2011-12-26T12:57:42Z
2011-12-27T05:44:47Z
2011-08-27T02:51:04Z
2011-12-26T12:57:42Z
2011-12-27T05:44:47Z
2000
 
Type Article
 
Identifier COMPUTERS & STRUCTURES, 77(2), 141-154
0045-7949
http://dx.doi.org/10.1016/S0045-7949(99)00209-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11518
http://hdl.handle.net/10054/11518
 
Language en