Effect of Hardness Combination on Contact Deformation of Center Bevel Blade with Counter Plate Subjected to a Pushing Load

Abstract

This paper reports on the contact mechanism between the crushing tip of a center bevel blade and the dent of a counter plate. Pushing tests of the blade on the counter plate were carried out experimentally and numerically by varying the mechanical flow properties of both the blade tip and the counter plate. A yield line force ratio β was proposed to characterize the contact deformation in terms of blade apex angle. Through this research, it was found that: (1) the crushed tip of a mild blade could be kept in moderate for the mild counter plate; (2) the counter plate's dent depth is linearly related to the β and depends on the combination of the mechanical properties of both the blade and the counter plate; (3) the total clearance of the deformed tools is almost independent from the tools material combination; (4) the profile angle of the blade tip and the crushed tip thickness mainly depend on the blade's properties.