Mechanical APDL Structural Analysis Guide

CINT,SYMM,ON

Example 11.7: Defining a Crack Symmetry Condition

CINT,NEW,1

CINT,SYMM,ON! crack 1 is a symmetrical crack

11.3.5.2.5. Step 5: Specify Output Controls

The program calculates the nodal material forces at the solution level and stores it to the results file
for postprocessing.

The output for the material force approach uses all OUTRES command defaults. The command
OUTRES,ALL includes CINT command results. However, you can issue an OUTRES,CINT command to
control the specific output for material force results only.

Example 11.8: Specifying Output Controls

CINT,NEW,1

CINT,CTNC,CRACK_TIP_NODE_CM

CINT,SYMM,ON

CINT,NCON,5

OUTRES,CINT,10! output material forces every 10 substeps

11.4. Learning More About Fracture Mechanics

A considerable body of literature exists concerning fracture mechanics. The following list of resources
offers a wealth of information but is by no means exhaustive:

1. Anderson, T. L.Fracture Mechanics -- Fundamentals and Applications. 2nd ed., Boca Raton: CRC, 1994.


2. Rice, J. R.“A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notched
   and Cracks.”Journal of Applied Mathematics. 35 (1968): 379-386.


3. Hutchinson, J.W. “Singular Behavior at the End of a Tensile Crack in a Hardening Material.”Journal of
   the Mechanics and Physics of Solids. 16, 1 (1968): 13-31.


4. Rice, J. R. and G. F. Rosengren. “Plane Strain Deformation Near a Crack Tip in a Power Law Hardening
   Material.”Journal of the Mechanics and Physics of Solids. 16 (1968): 1-12.


5. Shih, C. F., B. Moran, and T. Nakamura. “Energy Release Rat e Along a Three-Dimensional Crack Front in
   a Thermally Stressed Body.”International Journal of Fracture. 30, 2 (1986): 79-102.


6. Rybicki, E.F. and M.F. Kanninen. “A Finite Element Calculation of Stress-Intensity Factors by a Modified
   Crack Closure Integral.”Engineering Fracture Mechanics. 9 (1977): 931-938.


7. Benzeggagh, M. and M. Kenane. “Measurement of Mixed-Mode Delamination Fracture Toughness of
   Unidirectional Glass/Epoxy Composites with Mixed-Mode Bending Apparatus.”Composite Science and
   Technology. 56 (1996): 439-449.


8. Reeder, J.R.“A Bilinear Failure Criterion for Mixed-Mode Delamination in Composite Materials.”Testing
   and Design. ASTM STP 1206. 11 (1993): 303-322.


9. Reeder, J., S. Kyongchan, P. B. Chunchu, and D. R.. Ambur.Postbuckling and Growth of Delaminations in
   Composite Plates Subjected to Axial Compression. 43rd AIAA/ASME/ASCE/AHS/ASC Structures. Structural
   Dynamics, and Materials Conference. Denver. 1746 (2002): 10.

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Fracture Mechanics