摘要
对我国水轮机常用材料 2 5号钢光滑试件和焊接光滑试件在淡水介质环境下的疲劳性能进行了试验研究 ,在此基础上 ,利用三参数 S N曲线方程和 Goodman等寿命曲线建立了应力幅值、应力均值和疲劳寿命关系式 。
In order to research the safe life of the hydraulic turbine runner structure in safe allowable water head H in fresh water medium, in this paper, the fatigue limit was measured by the up and down method, and the grouping method during moderate and short life. The fatigue performance of both smooth and welded specimens made of 25 steel was tested, the relational expression of stress amplitude, stress mean and fatigue life was set up by means of three parameter SN curve equations and curves of Goodman equivalent life. This expression can be regarded as the basis for estimating fatigue life and fatigue reliability based design.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2002年第5期89-92,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目 (项目编号 :5 9975 0 0 9)
