Aspects of Mechanical Behavior of Rock under Static and Cyclic Loading. Part A: Mechanical Behavior or Rock under Static Loading
Final technical rept.
WISCONSIN UNIV-MADISON DEPT OF METALLURGICAL AND MINERAL ENGINEERING
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A finite element program based on both 2- and 3-dimensional element models is developed to simulate the Brazilian test. Rock isotropy nonhomogeneity, and anisotropy are taken into account in the analysis. The program has two failure criteria options the old criterion described in the semiannual report and a new criterion in which the elastic modulus across tension cracks is reduced to zero. Tests runs have shown that the new failure criterion yields far more realistic load-displacement and load-strain curves. A new equation solving procedure, the sparse matrix technique, is used in the program making possible the solution of certain problems which could not be handled by the banded matrix technique because of computer storage limitations. To demonstrate the capabilities of the program, several test problems were run.
- Geology, Geochemistry and Mineralogy