Two inclined parallel fractures in an infinite rock mass are subjected to compressive stress of 75MPa and confining stress of 15MPa. The inclination of the fractures is 45°. The material properties of the rock mass and fractures are the same as in Examples 1 and 3.
The fractures are found to propagate and coalesce mainly in mode II. Occasional mode I propagation is also observed.
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TITLE
Two inclined fractures subjected to biaxial compression
SYMMETRY -- Model symmetry
3 0.00 0.00
MODULUS - Poisson's Ratio and Young's modulus
0.25 0.40E+11
TOUGHNESS -- Gic and Giic
50. 1000.
PROPERIES -- mat, kn. ks,phi,coh
1 0.10E+14 0.10E+14 30.0 0.00E+00
SWINDOW -- xll,xur,yll,yur,numx,numy
-5.00 5.00 -5.00 5.00 30 30
STRESSES -- sxx,syy,sxy
-0.15E+08 -0.750E+08 0.00E+00
FRACTURE -- nume,xbeg,ybeg,xend,yend,kode,mat
12 0.000 0.500 1.000 1.500 2 1
CYCL 1000
ENDFILE
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