Separability property and ηpl factor in ASTM A387-Gr22 steel plate

In this work the possibility of obtaining the function G(b/W) from the variable separability property to calculate ηpl factor following the methodology proposed by Sharobeam and Landes using a deformation function H with total displacement was studied. The material employed was an ASTM A387-Gr22 steel plate and standard ASTM SE(B) and C(T) geometries were used for the test pieces with different side grooving ratios. (B) specimens, the differences observed between ηpl factor values determined with total displacement, plastic displacement and that recommended in ASTM 1820-96 were not significant. For C(T) specimens, the differences observed were lower than 2% for all side grooving ratios studied. The ηpl factor values resulting from the use of Sharobeam and Landes methodology using total and plastic displacement did not seem to follow the dependence with crack length suggested by ASTM E1820-96. It was not possible within the scope of this work to find a side groove influence on the ηpl factor value for this geometry.