ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A typical mechanical character of rock is that the tensile strength is far less than thecompressive strength. Meanwhile, the test data of tensile strength is very dispersive. Because thedirect tensile tests always result in failure due to the difficulty in clamping the rock sample, thesplitting test is used to determine the tensile strength of rock. There are four kinds of loading modesin the splitting test in actual laboratory test: angle pad splitting, round pad splitting, aclinic loadingplaten splitting, arc loading platen splitting. In this paper, the direct tensile test, the splitting test andthe influence of different loading modes on rock tensile strength were studied. In order to study thestress distribution, the progressive splitting failure process was numerically modeled under the fourkinds of loading cases by the Realistic Failure Process Analysis code (RFPA2D). Results show thatthe stress states under angle pad splitting, round pad splitting are similar to the stress states underdiametrical compressive state. Regarding that the round pad splitting test is easy to implement, andits numerical results are also stable relatively, the round pad loading mode was suggested to beadopted
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2553.pdf
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