The limit load of an elastic-plastic cracked three-point bend beam (Figure QA1) with S = 4W = 120 mm, crack length a and a/W = 0.4 is (Pi)c. Calculate %3D %3D the crack opening stress at a distance of 0.5 mm ahead of the crack tip in an elastic specimen subjected to bending load equal to the limit load. Assume that the materials yield strength is equal to oy = 300 MPa and the specimen is under plane strain condition. a S Figure QA1: three-point bend beam P.

Structural Analysis
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Chapter2: Loads On Structures
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The limit load of an elastic-plastic cracked three-point bend beam (Figure QA1)
with S = 4W = 120 mm, crack length a and a/W = 0.4 is (PL)c. Calculate
%3D
the crack opening stress at a distance of 0.5 mm ahead of the crack tip in an
elastic specimen subjected to bending load equal to the limit load. Assume that
the materials yield strength is equal to oy
300 MPa and the specimen is
under plane strain condition.
Figure QA1: three-point bend beam
P.
SI
Transcribed Image Text:The limit load of an elastic-plastic cracked three-point bend beam (Figure QA1) with S = 4W = 120 mm, crack length a and a/W = 0.4 is (PL)c. Calculate %3D the crack opening stress at a distance of 0.5 mm ahead of the crack tip in an elastic specimen subjected to bending load equal to the limit load. Assume that the materials yield strength is equal to oy 300 MPa and the specimen is under plane strain condition. Figure QA1: three-point bend beam P. SI
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