疲労き裂進展速度表示式を構成するパラメータに関する基礎的検討 : き裂エネルギ密度を中心として

概要

論文の詳細を見る
Previously, a general expression of fatigue crack growth rate was derived by one of the authors, based on the concept of crack energy density. In this paper, the meanings of that expression and the parameters of which that expression is composed are considered ; and the meaning of conventional expression like the law of Paris is also made clear. Experiments of fatigue crack growth and finite element analyses corresponding to these experiments are carried out, the influences of the differences of material, type of load and crack length or the like on the parameters and crack growth rate are discussed based on the results and it is verified that such influences can be evaluated by the general expression above. It is also pointed out that, if the constitutive relation of the material is given, it may be possible to evaluate the growth rate as well as influences of various differences.
一般社団法人日本機械学会の論文
1986-06-25