J-integral analysis of surface cracks in round bars under combined loadings
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Trans Tech Publications
2014
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my.unimap-352112014-06-09T08:46:18Z J-integral analysis of surface cracks in round bars under combined loadings A. Emran, Ismail Ahmad Kamal, Ariffin Shahrum, Abdullah Mariyam Jameelah, Ghazali Ruslizam, Daud, Dr. emran@uthm.edu.my kamal@eng.ukm.my shahrum@eng.ukm.my mariyam@eng.ukm.my ruslizam@unimap.edu.my Finite element analysis J-integral Limit load Stress intensity factor Surface crack Link to publisher's homepage at http://www.ttp.net/ This paper presents a non-linear numerical investigation of surface cracks in round bars under combined bending and torsion loadings by using ANSYS finite element analysis (FEA). Due to the non-symmetrical analysis, a full finite element (FE) model was constructed and special attention was given at the crack tip of the cracks. The surface cracks were characterized by the dimensionless crack aspect ratio, a/b = 0.6, 0.8, 1.0 and 1.2, while the dimensionless relative crack depth, a/D = 0.1, 0.2 and 0.3. The square-root singularity of stresses and strains was modeled by shifting the mid-point nodes to the quarter-point locations in the region around the crack front. The proposed model was validated with the existing model before any further analysis. The elastic-plastic analysis under the loading was assumed to follow the Ramberg-Osgood relation with strain hardening exponent, n = 5 and 10. J values were determined for all positions along the crack front and then, the limit load was predicted using the J values obtained from FEA through the reference stress method. 2014-06-09T08:46:18Z 2014-06-09T08:46:18Z 2011-02 Article Advanced Materials Research, vol. 214, 2011, pages 187-191 1022-6680 (Print) 1662-8985 (Online) http://www.scientific.net/AMR.214.187 http://dspace.unimap.edu.my:80/dspace/handle/123456789/35211 10.4028/www.scientific.net/AMR.214.187 en Trans Tech Publications |
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English |
| topic |
Finite element analysis J-integral Limit load Stress intensity factor Surface crack |
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Finite element analysis J-integral Limit load Stress intensity factor Surface crack A. Emran, Ismail Ahmad Kamal, Ariffin Shahrum, Abdullah Mariyam Jameelah, Ghazali Ruslizam, Daud, Dr. J-integral analysis of surface cracks in round bars under combined loadings |
| description |
Link to publisher's homepage at http://www.ttp.net/ |
| author2 |
emran@uthm.edu.my |
| author_facet |
emran@uthm.edu.my A. Emran, Ismail Ahmad Kamal, Ariffin Shahrum, Abdullah Mariyam Jameelah, Ghazali Ruslizam, Daud, Dr. |
| format |
Article |
| author |
A. Emran, Ismail Ahmad Kamal, Ariffin Shahrum, Abdullah Mariyam Jameelah, Ghazali Ruslizam, Daud, Dr. |
| author_sort |
A. Emran, Ismail |
| title |
J-integral analysis of surface cracks in round bars under combined loadings |
| title_short |
J-integral analysis of surface cracks in round bars under combined loadings |
| title_full |
J-integral analysis of surface cracks in round bars under combined loadings |
| title_fullStr |
J-integral analysis of surface cracks in round bars under combined loadings |
| title_full_unstemmed |
J-integral analysis of surface cracks in round bars under combined loadings |
| title_sort |
j-integral analysis of surface cracks in round bars under combined loadings |
| publisher |
Trans Tech Publications |
| publishDate |
2014 |
| url |
http://dspace.unimap.edu.my:80/dspace/handle/123456789/35211 |
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1643797755633598464 |