Deformation Analysis of Quenched Center Bevel Blade Subjected to Pushing Load

概要

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In this paper, we describe the tip crushing of a center bevel blade that has a quenched tip. The push testing on a steel blade, the wedge angle of which was 42 degrees, was carried out experimentally and numerically. By varying the height of the quenched tip and the applied line force, the crush profile and stress distribution of the blade tip were investigated by elastoplastic finite element analysis. The following results were obtained : (1) The sinking phenomenon of a quenched tip into a base material is a primary deformation characteristic of quenched center bevel blades. (2) The critical line force, which changes the deformation mode of tip crushing, is estimated using the yielding strength of the base material and the effective length of the quenching hazard zone. (3) When the quenched tip begins to sink into the base material, that is, when the applied line force is larger than the critical line force, concentrated tensile stress occurs at the cross points of the hazard boundary line and the surface lines of the blade.
The Japan Society for Technology of Plasticityの論文