Narayana, KB and George, S and Dattaguru, B and Ramamurthy, TS and Vijayakumar, K (1994) Modified Crack Closure Integral (MCCI) For 3-D Problems Using 20-Noded Brick Elements. In: Fatigue and Fracture of Engineering Materials and Structures, 17 (2). pp. 145-157.
Full text not available from this repository. (Request a copy)Abstract
The Modified Crack Closure Integral (MCCI) technique based on Irwin's crack closure integral concept is very effective for estimation of strain energy release rates G in individual as well as mixed-mode configurations in linear elastic fracture mechanics problems. In a finite element approach, MCCI can be evaluated in the post-processing stage in terms of nodal forces and displacements near the crack tip. The MCCI expressions are however, element dependent and require a systematic derivation using stress and displacement distributions in the crack tip elements. Earlier a general procedure was proposed by the present authors for the derivation of MCCI expressions for 3-dimensional (3-d) crack problems modelled with 8-noded brick elements. A concept of sub-area integration was proposed to estimate strain energy release rates at a large number of points along the crack front. In the present paper a similar procedure is adopted for the derivation of MCCI expressions for 3-d cracks modelled with 20-noded brick elements. Numerical results are presented for centre crack tension and edge crack shear specimens in thick slabs, showing a comparison between present results and those available in the literature.
| Item Type: | Journal Article |
|---|---|
| Publication: | Fatigue and Fracture of Engineering Materials and Structures |
| Publisher: | John Wiley and Sons |
| Additional Information: | Copyright of this article belongs to John Wiley and Sons. |
| Department/Centre: | Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) |
| Date Deposited: | 26 Apr 2011 07:16 |
| Last Modified: | 26 Apr 2011 07:16 |
| URI: | http://eprints.iisc.ac.in/id/eprint/36521 |
Actions (login required)
 |
View Item |
