 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12882 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8071
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| In English (Mech. Solids): | | 4811 |
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| M. Chafi, M.A. Bouchelarm, A. Boulenouar, and N. Benseddiq, "Two-Term Fracture Approach for the Prediction of Mixed Mode Crack Direction in Functionally Graded Materials," Mech. Solids. 58 (6), 2364-2381 (2023) |
| Year |
2023 |
Volume |
58 |
Number |
6 |
Pages |
2364-2381 |
| DOI |
10.3103/S0025654423601441 |
| Title |
Two-Term Fracture Approach for the Prediction of Mixed Mode Crack Direction in Functionally Graded Materials |
| Author(s) |
M. Chafi (Laboratoire de Matériaux et Systèmes Réactifs, Djillali Liabes University of Sidi Bel-Abbes, Sidi Bel-Abbes, 22000 Algeria)
M.A. Bouchelarm (Laboratoire de Matériaux et Systèmes Réactifs, Djillali Liabes University of Sidi Bel-Abbes, Sidi Bel-Abbes, 22000 Algeria, m.bouchelarm@yahoo.com)
A. Boulenouar (Laboratoire de Matériaux et Systèmes Réactifs, Djillali Liabes University of Sidi Bel-Abbes, Sidi Bel-Abbes, 22000 Algeria)
N. Benseddiq (Unité de Mécanique de Lille, EA 7512 UML, University of Lille, Lille, 59000 France) |
| Abstract |
In a two terms approach, the representation of the stress field at the crack-tip consists of the mixed mode stress intensity factors (SIFs) as well as the non-singular term, the so-called T-stress. For the prediction of the crack direction in functionally graded materials, a short beam bend (SBB) containing an inclined pre-crack was considered. The main purpose is to investigate the influence of T-stress on the fracture initial angle under mixed mode conditions. Various specimen combinations were analyzed to generate different opening and shearing modes. Using the displacement field near the crack-tip, the fracture parameters were numerically determined then implemented in a subroutine to evaluate the fracture initial angle by both traditional and generalized maximum circumferential stress criteria. The results showed a difference in the predicted crack initial angle; this difference becomes more noticeable as the mode II becomes dominant which is attributed to the consideration of T-stress. |
| Keywords |
mixed mode loading, stress intensity factors, T-stress, biaxiality, fracture criteria, crack growth, functionally graded materials |
| Received |
12 August 2023 | Revised |
14 October 2023 | Accepted |
16 October 2023 |
| Link to Fulltext |
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