An inclined fracture in an infinite rock mass is subjected to compressive stress of 50MPa and confining stress of 7.5MPa. The inclination of the fracture is 45°. The material properties of the rock mass and fractures are the same as in Examples 1 and 3.
The fracture is found to propagate in mixed mode I and II in the overall direction about 70° to the confining stress.
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TITLE
Single inclined fracture subjected to biaxial compression
SYMMETRY -- Model symmetry
0 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 20 20
STRESSES -- sxx,syy,sxy
-0.75E+07 -0.50E+08 0.00E+00
FRACTURE -- nume,xbeg,ybeg,xend,yend,kode,mat
15 -1.000 -1.000 1.000 1.000 2 1
CYCL 1000
ENDFILE
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The following are two snapshots for this model simmulated by using Fracod2D:
