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HOW TO FIND K-DOMINANT REGION

Submitted by ravitejk4u on
fracture mechanics

hii all..

i am working on fracture mechanics. i had modeled a 4 pt bend specimen having single notch crack(in ABAQUS). i am trying to find the range of K-dominant region at the crack tip.i had modelled radial mesh at the crack tip and using 20 noded reduced integration elements. To analyze the K-dominat region, primarily i had compared the theoritical stress plots and computational stress plots. stress plots means Sxx Syy Sxy values plotted againt the angle(angle measured from uncracked segment) at particular radius.

 i request your suggestions, relevent papers and comments.

thanks

best wishes

ravitej

L. Roy Xu

 Dear Mr. Ravitej,

 

Check this paper: 

 

Rosakis, A.J. and Ravi-Chandar, K. 1986. On Crack-Tip Stress State: An Experimental Evaluation of Three-Dimensional Effects,” International J. of Solids and Structures, 22, 121-134.

Tue, 01/29/2008 - 22:12 Permalink