鋼の静強度に関する寸法効果(II)

概要

論文の詳細を見る
In this paper the strain and the stress in a round bar, which is pulled so as to produce a stress beyond its yield point, were analysed by using the distribution of the axial stress over the cross-section of the bar ; the latter was obtained by measuring the residual stress after the load on the specimen is released. The unevenness of stress distribution over the cross-section of stretched specimen, which is attributed to appearances of wedge type Luders lines in the specimen, fades as the specimen is stretched further. The reason was discussed. Experiments, as well as theoretical consideration, show that small variation in the diameter of an axially pulled bar, observed at the stage of loading above which the strain-hardening coefficient becomes nearly constant, is the very cause of local contraction of the bar.
一般社団法人日本機械学会の論文
1956-10-25