A Stress Analysis of Bending Fatigue Specimens Using the Finite Element Method
نویسندگان
چکیده
A numerical analysis of stresses generated in bending fatigue specimens has been performed employing the commercially available FEM-program ADINA. The results show that transverse bending occurs, giving rise to a stress enhancement in the edge region. A stress maximum is obtained approximately 2 mm away from the specimen edge. This result is consistent with the fact that fatigue initiation predominantly takes place in a zone 1-2 mm inside the edge. The stress maximum thus obtained is due to a combination of a large tensile stress component and large shear stresses. Standard stress formulae can neither predict correct stress level nor stress distribution. A stringent analysis therefore requires the use of advanced numerical computations.
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