| 缝焊接头疲劳强度降低系数和寿命分散系数的研究 |
| |
| 引用本文： | 范引鹤.缝焊接头疲劳强度降低系数和寿命分散系数的研究[J].航空动力学报,1996,11(3):317-319,335. |
| |
| 作者姓名： | 范引鹤 |
| |
| 作者单位： | 南京航空航天大学，南京航空航天大学２０２教研室 |
| |
| 摘 要： | 为了研究发动机机匣的低循环疲劳寿命，本文根据机匣的实际情况，设计了焊搭接试件，进行对１Ｃｒ１８Ｎｉ９Ｔｉ材料缝焊搭接接头的疲劳性能测试，并用统计分析的方法得到Ｓ－Ｎ曲线和Ｐ－Ｓ－Ｎ曲线，及其缝焊接头的疲劳强度降低系数和疲劳寿命分散系数，与该材料的光滑试件对比，其结果可以看出，缝焊接头的疲劳强度大大低于光滑试件，而其疲劳寿命分散系数比光滑试件好。
|
| 关 键 词： | 焊接接头 疲劳强度 寿命 |
| 收稿时间： | 8/1/1995 12:00:00 AM |
| 修稿时间： | 1995/11/1 0:00:00 |
STUDY ON REDUCTION FACTOR OF FATIGUE STRENGTH AND DISPERSION COEFFICIENT OF LIFE IN SEAM WELDED JOINTS |
| |
| Fan Yinhe.STUDY ON REDUCTION FACTOR OF FATIGUE STRENGTH AND DISPERSION COEFFICIENT OF LIFE IN SEAM WELDED JOINTS[J].Journal of Aerospace Power,1996,11(3):317-319,335. |
| |
| Authors: | Fan Yinhe |
| |
| Institution: | 2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016 |
| |
| Abstract: | The purpose of this work is to study low cycle fatigue life of engine cases.A welded test piece has been designed according to reality of cases,using material of 1Cr18Ni9Ti in order to get fatigue function survey of seam welded joints.From tests S-N curve and P-S-N curve are obtained.Then the reduetion factor of fatigue strength and dispersion coefficient of fatigue life for the seam welded joints are achieved with statistics analysis methods.Compared with a smooth test piece,the fatigue strength of the seam welded joints is obviously less than smooth test piece,but dispersion coefficient of fatigue life is better. |
| |
| Keywords: | Welding joints Fatigue strength Life time |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
