On the Plastic Zone around a Crack Tip in a Rock Specimen
- DOI
- 10.2991/emeit.2012.145How to use a DOI?
- Keywords
- Mises yield criterion, Stress intensity factor, Plastic zone, Boundary collocation method
- Abstract
The stress intensity factors (SIFs) for a infinite volume were corrected by two dimensionless quantities YI and YII which were obtained by employing the Boundary Collocation Method (BCM). The expression of the elastic-plastic boundary of a mixed crack for a cracked specimen was formulated based on the Mises yield criterion. Finally, the shape and scale of the plastic zone for tensile-shear cracks and compressive-shear cracks were analyzed and some meaningful conclusions were obtained. The results show that: the shape of a cracked specimen has an significant effect on the plastic zone, the scale of the plastic zone is much smaller than its real scale under the assumption of infinity volume, the orientation angle of a crack affects both the shape and scale of the crack tip plastic zone significantly under tension, the friction between the crack surfaces can reduce the scope of the crack tip plastic zone effectively under compression.
- Copyright
- © 2012, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - T. Ai AU - C.H. Wu AU - R. Zhang AU - Z.Y. Xiang AU - Y.Y. Yuan PY - 2012/09 DA - 2012/09 TI - On the Plastic Zone around a Crack Tip in a Rock Specimen BT - Proceedings of the 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT 2012) PB - Atlantis Press SP - 683 EP - 686 SN - 1951-6851 UR - https://doi.org/10.2991/emeit.2012.145 DO - 10.2991/emeit.2012.145 ID - Ai2012/09 ER -