This Bulletin contains three reports on research work performed at the University of Kansas on CTOD and J-integral test studies of A36 steel. Publication of this Bulletin - WRC Bulletin No. 351 was sponsored by the Subcommittee on Failure Modes of Components of the Pressure Vessel Research Council of the Welding Research Council. In this study@ finite element analyses are employed to compare the elastic-plastic behavior of square (cross-section) three-point bend specimens with crack-depth to specimen-width ratios (a/W) ranging between 0.50 and 0.05. The two-dimensional analysis of the specimen with an a/W ratio of 0.15 reveals a fundamental change in the deformation pattern from the deep crack deformation pattern. The plastic zone extends to the free surface behind the crack concurrent with the development of a plastic hinge. For shorter cracks (a/W = 0.10 and 0.05)@ the plastic zone extends to the free surface behind the crack prior to the development of a plastic hinge. For longer cracks (a/W > 0.20)@ a plastic hinge develops before the plastic zone extends to the free surface behind the crack.
BULLETIN 351-1990由WRC - Welding Research Council 发布于 1990-02-01,并于 2012-10-12 实施。
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