Premium
On the effect of quarter‐point element size on fracture criteria
Author(s) -
Yehia Nabil A. B.,
Shephard Mark S.
Publication year - 1985
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/nme.1620211014
Subject(s) - stress intensity factor , fracture mechanics , point (geometry) , fracture (geology) , mode (computer interface) , element (criminal law) , mathematics , intensity (physics) , finite element method , structural engineering , materials science , mechanics , mathematical analysis , geometry , engineering , composite material , computer science , physics , optics , law , political science , operating system
The effect of the quarter‐point element size on the solution parameters of fracture criteria is investigated in view of its effect on the computed stress intensity factors. An analytical relationship between the error in calculating crack propagation increment and stress intensity for single mode problems is obtained while, for mixed mode problems, the investigation is based on numerical experimentation. The singular element size is found to have a substantial effect on both crack propagation angle and increment for the geometries considered.