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http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35211
Title: | J-integral analysis of surface cracks in round bars under combined loadings |
Authors: | 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 |
Keywords: | Finite element analysis J-integral Limit load Stress intensity factor Surface crack |
Issue Date: | Feb-2011 |
Publisher: | Trans Tech Publications |
Citation: | Advanced Materials Research, vol. 214, 2011, pages 187-191 |
Abstract: | 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. |
Description: | Link to publisher's homepage at http://www.ttp.net/ |
URI: | http://www.scientific.net/AMR.214.187 http://dspace.unimap.edu.my:80/dspace/handle/123456789/35211 |
ISSN: | 1022-6680 (Print) 1662-8985 (Online) |
Appears in Collections: | Ruslizam Daud, Assoc Prof. Ir. Dr. |
Files in This Item:
File | Description | Size | Format | |
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J-integral analysis of surface cracks in round bars under combined loadings tension-abstract.pdf | 57.33 kB | Adobe PDF | View/Open |
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