%0 Journal Article
%T Estimation of mixed-mode fracture parameters by gene expression programming
%J Scientia Iranica
%I Sharif University of Technology
%Z 1026-3098
%A Khademalrasoul, A.
%A Adib, A.
%D 2020
%\ 02/01/2020
%V 27
%N 1
%P 229-238
%! Estimation of mixed-mode fracture parameters by gene expression programming
%K Fracture mechanics
%K Genetic programming
%K Stress intensity factors
%K Extended finite element method
%R 10.24200/sci.2018.5512.1319
%X The linear elastic fracture phenomenon has been characterized with stress intensity factors (SIFs). In this study a general function is obtained in order to predict the fracture parameters. Numerical calculation of the SIFs in a mixed-mode condition is a cumbersome task. In this research, more than 6800 numerical analyses using extended finite element method are conducted to simulate the fracture problem. States are considered for a plate with an arbitrary edge or center crack. Mixed mode SIFs were calculated using of interaction integral. Then, Gene Expression Programming (GEP) method is utilized to extraction of a function. Results show acceptable correlations between numerical calculations and genetic programming functions. R-square (R2) values are in a range of 0.91 to 0.96 that guarantees the accuracy of the inferred functions.
%U https://scientiairanica.sharif.edu/article_21094_63d40e8d833258a164c0e844b5eb6616.pdf