Evolution of crack paths and compliance in round bars under cyclic tension and bending
The aim of this paper is to calculate how the surface crack front and the dimensionless compliance evolve in cracked cylindrical bars subjected to cyclic tension or bending with different initial crack geometries (crack depths and aspect ratios). To this end, a computer application (in the Java prog...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2014-09-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1325 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846092412003287040 |
|---|---|
| author | J. Toribio J.C. Matos B. González J. Escuadra |
| author_facet | J. Toribio J.C. Matos B. González J. Escuadra |
| author_sort | J. Toribio |
| collection | DOAJ |
| description | The aim of this paper is to calculate how the surface crack front and the dimensionless compliance evolve in cracked cylindrical bars subjected to cyclic tension or bending with different initial crack geometries (crack depths and aspect ratios). To this end, a computer application (in the Java programming language) that calculates the crack front’s geometric evolution and the dimensionless compliance was made by discretizing the crack front (characterized with elliptical shape) and assuming that every point advances perpendicularly to the crack front according to the Paris law, and using a three-parameter stress intensity factor (SIF). The results show that in fatigue crack propagation, relative crack depth influences more on dimensionless compliance than the aspect ratio, because the crack front tends to converge when the crack propagates from different initial geometries, showing greater values for tension than for bending. Furthermore, during fatigue crack growth, materials with higher values of the exponent of the Paris law produce slightly greater dimensionless compliance and a better convergence between the results for straight-fronted and circular initial cracks. |
| format | Article |
| id | doaj-art-2a1baabf0d2540d3b8d1f223238e1f9c |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2014-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-2a1baabf0d2540d3b8d1f223238e1f9c2025-01-02T20:56:28ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932014-09-01830Evolution of crack paths and compliance in round bars under cyclic tension and bendingJ. Toribio0J.C. Matos1B. González2J. Escuadra3University of Salamanca, SpainUniversity of Salamanca, SpainUniversity of Salamanca, SpainUniversity of Salamanca, SpainThe aim of this paper is to calculate how the surface crack front and the dimensionless compliance evolve in cracked cylindrical bars subjected to cyclic tension or bending with different initial crack geometries (crack depths and aspect ratios). To this end, a computer application (in the Java programming language) that calculates the crack front’s geometric evolution and the dimensionless compliance was made by discretizing the crack front (characterized with elliptical shape) and assuming that every point advances perpendicularly to the crack front according to the Paris law, and using a three-parameter stress intensity factor (SIF). The results show that in fatigue crack propagation, relative crack depth influences more on dimensionless compliance than the aspect ratio, because the crack front tends to converge when the crack propagates from different initial geometries, showing greater values for tension than for bending. Furthermore, during fatigue crack growth, materials with higher values of the exponent of the Paris law produce slightly greater dimensionless compliance and a better convergence between the results for straight-fronted and circular initial cracks.https://www.fracturae.com/index.php/fis/article/view/1325Numerical modelling |
| spellingShingle | J. Toribio J.C. Matos B. González J. Escuadra Evolution of crack paths and compliance in round bars under cyclic tension and bending Fracture and Structural Integrity Numerical modelling |
| title | Evolution of crack paths and compliance in round bars under cyclic tension and bending |
| title_full | Evolution of crack paths and compliance in round bars under cyclic tension and bending |
| title_fullStr | Evolution of crack paths and compliance in round bars under cyclic tension and bending |
| title_full_unstemmed | Evolution of crack paths and compliance in round bars under cyclic tension and bending |
| title_short | Evolution of crack paths and compliance in round bars under cyclic tension and bending |
| title_sort | evolution of crack paths and compliance in round bars under cyclic tension and bending |
| topic | Numerical modelling |
| url | https://www.fracturae.com/index.php/fis/article/view/1325 |
| work_keys_str_mv | AT jtoribio evolutionofcrackpathsandcomplianceinroundbarsundercyclictensionandbending AT jcmatos evolutionofcrackpathsandcomplianceinroundbarsundercyclictensionandbending AT bgonzalez evolutionofcrackpathsandcomplianceinroundbarsundercyclictensionandbending AT jescuadra evolutionofcrackpathsandcomplianceinroundbarsundercyclictensionandbending |