Estimation of mixed-mode fracture parameters by gene expression programming

Khademalrasoul, A.; Adib, A.

doi:10.24200/sci.2018.5512.1319

Estimation of mixed-mode fracture parameters by gene expression programming

Document Type : Research Article

Authors

Department of Civil Engineering, Engineering Faculty, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

10.24200/sci.2018.5512.1319

Abstract

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.

Keywords

20.1001.1.10263098.2020.27.1.17.3

Main Subjects

Fuzzy sets

References

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