航空发动机减速器轴系零件的强度可靠性计算方法

以古德曼（Ｇｏｏｄｍａｎ）应力线图和第四强度理论为基础,提出了等效高、低周复合循环应力的方法。采用蒙特卡罗（ＭｏｎｔｅＣａｒｌｏ）法对应力和强度进行了统计模拟,同时拟合了应力和强度的分布规律。运用应力－强度干涉模型,提出了评估轴在单一工作状态和多工作状态下,屈服、破坏和疲劳强度的可靠度计算方法,并编制了计算机程序。计算实例表明,该方法是令人满意的。

A METHOD FOR THE STRENGTH RELIABILITY CALCULATION OF AXIAL LMACHING PARTS OF AIRLINE ENGINE REDUCER

On the basis of the Goodman stress diagram and the fourth strength theory,a method is suggested to get an equivalent stress for high-low frequency compound circulating stress,The stress and strength are simulated statisitcally with the Monte-Carlo method,and their distributions are fitted.The model of stress-strength interference is applied to the strength reliability calcula-tion,A method is put forward to calculate the yield,fracture and fatigue reliability of axial rnachine parts under single-working and multiworking conditions. and the calculation program is compiled.The calcuktion results indicate that the method is satisfactory.