Issue |
EPJ Web of Conferences
Volume 26, 2012
DYMAT 2012 - 10th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
---|---|---|
Article Number | 01041 | |
Number of page(s) | 4 | |
Section | Experimental Techniques | |
DOI | https://doi.org/10.1051/epjconf/20122601041 | |
Published online | 31 August 2012 |
https://doi.org/10.1051/epjconf/20122601041
Incubation time approach to rock dynamic strength characterization
1 St.-Petersburg State University, 199034 St. Petersburg, Russia
2 DynaMat Lab., University of Applied Sciences of Southern Switzerland, 6952 Canobbio, Switzerland
3 Institute Problem of Mechanical Engineering, Russian Academy of Sciences, 199178 St. Petersburg, Russia
The dynamic characterization of rocks under intermediate and high strain rates is fundamental to understand the material behaviour in case of heavy earthquakes and dynamic events. The implementation of material constitutive laws is of capital importance for the numerical simulation of the dynamic processes as those caused by earthquakes. These data are necessary and require experimental techniques able to induce on the rock materials state of loading reproducing the actual dynamic condition. Consider the work [1]. The dynamic characterization has been carried out by means of two special apparatus: the split Hopkinson tension bar and the hydro-pneumatic machine . These equipments are briefly described with a discussion on the results of dynamic tension tests at three different strain rates (0.1, 10, 100 strain/s) on Onsernone Orthogneiss for loading directions 0∘, 45∘ and 90∘ with respect to the schistosity. Results of the tests show a significant strain rate sensitive behaviour, exhibiting dynamic tensile strength increasing with strain rate, up to about two times with respect to the quasi-static conditions in the case of 0∘ and 45∘ orientation and more than three times in the case of 90 at high strain rates.
© Owned by the authors, published by EDP Sciences, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.