Results are presented of a numerical analysis conducted to investigate the influence of the lateral confining stress on the development of the plastic zone under the indenter and on the initiation of tensile fracture in normal wedge indentation. Theoretical and numerical analysis reveals that the indentation process is principally controlled by two numbers: a dimension-less group characterizing the material properties and tool geometry; by the ratio of the lateral confining stress over the uniaxial compressive strength. The results shed some light on the mechanism of formation of lateral or sub-horizontal tensile cracks observed in the indentation experiments.
|Original language||English (US)|
|Number of pages||1|
|Journal||International journal of rock mechanics and mining sciences & geomechanics abstracts|
|State||Published - Apr 1997|
|Event||Proceedings of the 1997 36th US Rock Mechanics ISRM International Symposium - New York, NY, USA|
Duration: Jun 29 1997 → Jul 2 1997
Bibliographical noteFunding Information:
The research reported in this paper has been supported by grant NSF/CMS-9612035 from the National Science Foundation. This support is gratefully acknowledged.