塑性ひずみに着眼したランダム荷重下での疲労損傷則

概要

論文の詳細を見る
Fatigue damage evaluation is one of the most important process for the integrity of a machine or a structure. Although many trials have been made for fatigue damage evaluation, few methods can be used to deal with a wide range of stress or strain conditions of fatigue tests. In this study, the fatigue damage evaluation methods were examined with respect to plastic strain ranging from small to large amplitudes of strain repetition for a given stress sequence. Then, a new fatigue damage rule was proposed in terms of strain condition. The new rule showed a good agreement with the theoretical estimations for various experimental conditions. An interporation technique was developed to obtain the stress-strain behavior of a sample material for a given stress sequence. This showed a good applicability for the fatigue damage estimation.
社団法人日本材料学会の論文
1994-02-15