A fracture mechanics analysis of the DCDC specimen

摘要: The "double cleavage drilled compression" (DCDC) specimen is a rectangular bar with circular hole in its centre that loaded by compressive stresses. Due to the hole, positive stresses are generated vicinity cause mode-I stress intensity factors. This used for determination of crack growth under and modified version mixed-mode loading conditions. A fracture mechanics analysis presented on basis finite element computations. After compilation literature results factors T-stresses, weight functions mode I II derived. consequences load misalignment kinking shown. Since factor from available long cracks compared radius only, also short-crack solutions derived use function technique. These allow discuss generation initial necessary tests. In several papers, side surface displacements were reported discussed respect occurrence plasticity effects glass. order decide whether deviations pure linear-elastic material behaviour measured, it know elastic response. Thtrefore, 3-dimensional study performed. It exhibits depression uplifting free very similar found literature.