1117 金属疲労に関する塑性順応の仮説とその意義 : 疲労辷り帯の微視力学挙動を考慮した疲労強度データ解析の考え方(OS11. 材料の組織・強度に関するマルチスケールアナリシス(4),オーガナイズドセッション講演)

Abstract

A hypothesis of plastic adaptation has been proposed and modeled as one idea that is available to link micros- and macro-scopic approaches to fatigue problems. Based on the hypothesis, an equivalent cyclic stress ratio has been formulated as a useful parameter for correspondence between cyclic stress conditions of notched and unnotched specimens. In the present study, the rationality of the hypothesis and its application to multi-axial fatigue problems are discussed from a viewpoint of micro- and macro-mechanics.