Back to Search
Start Over
Determination of elastic T-stress along three-dimensional crack fronts using an interaction integral
Determination of elastic T-stress along three-dimensional crack fronts using an interaction integral
- Source :
- International Journal of Solids and Structures. 29:1597-1611
- Publication Year :
- 1992
- Publisher :
- Elsevier BV, 1992.
-
Abstract
- We introduce an effective computational method, based on an interaction integral, to evaluate elastic T -stress along three-dimensional crack fronts. Using this technique, T -stress distributions of various three-dimensional geometries are determined from finite element calculations. The computed results show that the through-thickness variation of T -stress along the crack front of edge-cracked plates is relatively small under both tension and bending load conditions. The deviation from the corresponding two-dimensional results increases with increasing relative crack length and with decreasing relative plate thickness. The increase in T -stress with decreasing thickness results from the inherent positive biaxiality of thin elastic plates. Furthermore, the value of three-dimensionally computed T -stress in these through-crack geometries increases with increasing Poisson's ratio. The T -stress distribution is also calculated along the curved crack front of a surface-flawed plate. For the particular geometry considered, the maximum T -stress along the crack front is located at the mid-point of the crack front, and there is a greater variation of T -stress along the crack front under bending loads than in tension.
- Subjects :
- Fissure
Applied Mathematics
Mechanical Engineering
Crack tip opening displacement
Geometry
Bending
Physics::Classical Physics
Condensed Matter Physics
Crack growth resistance curve
Poisson's ratio
Stress (mechanics)
Condensed Matter::Materials Science
Crack closure
symbols.namesake
medicine.anatomical_structure
Mechanics of Materials
Modeling and Simulation
Tension (geology)
medicine
symbols
General Materials Science
Mathematics
Subjects
Details
- ISSN :
- 00207683
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- International Journal of Solids and Structures
- Accession number :
- edsair.doi...........8862a3d3066e05cfb82793f3a9f0dbd7
- Full Text :
- https://doi.org/10.1016/0020-7683(92)90011-h