Two-dimensional Stress Distribution in a Compact Tension Specimen : Elastic Solution

概要

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The stress distribution in a compact specimen for fracture testing is numerically computed by the analytic method. The condition of free surface on the outer boundary in the state embedded in an infinite plate is expressed by a discrete arrangement of edge dislocations, and that on the crack plane is expressed by point forces acting on the plane of finite crack in an infinite plate. The dislocation distribution is obtained through a successive approximation developed empirically. The computed results are shown by contour maps of stresses, and by distributions of dislocations, surface stresses, and displacements on the external boundary. The stress intensity factor, the stress on the back face, and the displacement at the crack entrance are given as functions of crack length.
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