摘要
首先由等幅疲劳中值 Sa- Nc曲线与中值等寿命曲线 ,建立了等幅中值 Sa- Sm- Nc曲面方程。然后建立了变幅加载下疲劳可靠性二维统计准则。最后给出了一个具体应用实例 ,表明当随机变量α的概率分布已知时 ,可由二维统计
The function of constant amplitude median S a-S m- c surface is established by combination of the constant a mplitude median S a- c curve and the constant life diagram. The t wo-dimensional statistical Miner's rule is proposed for reliability-based pred iction of fatigue life under variable amplitude loading. Finally, an example of application is presented, showing that when the probability distribution of the random variable is known, the two-dimensional statistical Miner's rule is very convenient and feasible in fatigue reliability analysis for engineering structur es.
出处
《机械科学与技术》
CSCD
北大核心
2001年第5期641-642,共2页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金 (5 960 5 0 10
5 99790 15
上海市高校青年教师基金资助项目
