軟鋼軸の塑性ねじりに関する実験(第7報) : Sled Runner Keyseatを有する軸

Abstract

In order to clarify the effects of notches on yielding, strain figures developed in notched shafts are observed in details during the plastic stage of elastic-plastic torsion. The test pieces used are 0.48% C carbon steel shafts having a Sled Runner keyseat. The torsional moment-deflection curves are obtained throughout the elastic-plastic stage of torsion and the values of torsional moment are obtained for each notch. Constraint factors for each notch are given and the influence of the shape of notch on the factors is investigated. Comparison is made with the theoretical results obtained previously in the case of yield condition of constant maximum shearing stress.