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Adaptive finite element analysis of mixed‐mode crack problems with automatic mesh generator
Author(s) -
Murthy K. S. R. K.,
Mukhopadhyay M.
Publication year - 2000
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/1097-0207(20001120)49:8<1087::aid-nme995>3.0.co;2-p
Subject(s) - finite element method , estimator , isotropy , stress intensity factor , adaptive mesh refinement , generator (circuit theory) , mode (computer interface) , mesh generation , energy (signal processing) , structural engineering , computer science , fracture (geology) , strain energy release rate , algorithm , mechanics , mathematics , materials science , engineering , physics , composite material , computational science , statistics , power (physics) , quantum mechanics , operating system
Fully automatic advancing front type mesh generator to take care of crack and fracture problems has been presented. It is coupled with Zienkiewicz and Zhu error estimator, the refinement methodology depends on the concept of strain energy concentration for adaptive analysis of mixed‐mode crack problems. No investigation is reported in this direction so far. It has been found that the above combination proved to be very powerful for adaptive finite element analysis of mixed‐mode crack problems in two‐dimensional isotropic solids. Very accurate stress intensity factors have been obtained for a target error of 10 per cent with a minimum number of steps. Copyright © 2000 John Wiley & Sons, Ltd.