横穴をもつ軟鋼中実円筒の圧縮による降伏の寸法効果

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This paper describes the experimental results and the theoretical analysis concerning the size effect on yielding of a solid cylinder of a mild steel with a transverse hole subjected to compression. We made the theoretical analysis by taking the effect of the surface layer into account. The analytical results coincide well with the experimental data and concluded as follows : (1) There are two modes in yielding ; one is the yielding taking place in the whole section and the other is that taking place locally. (2) The yield point of the cylinder is influenced not only by the ratio of the diameter between the hole and the test cylinder, but also by the diameter of the cylinder. Moreover, we point out that the thickness of the surface layer is 0.16mm which corresponds to about 5〜6 times the grain size of the material.
一般社団法人日本機械学会の論文
1987-05-25