| 弹性模量对低周疲劳性能参数的影响 |
| |
| 引用本文： | 张国栋,苏彬,王泓,何玉怀,许超,李骋.弹性模量对低周疲劳性能参数的影响[J].航空动力学报,2005,20(5):768-771. |
| |
| 作者姓名： | 张国栋 苏彬 王泓 何玉怀 许超 李骋 |
| |
| 作者单位： | 1.北京航空材料研究院,北京100095 |
| |
| 摘 要： | 对材料1C r11N i2W 2M oV进行了500℃的等温低周疲劳试验和静力拉伸试验。考察了静力拉伸弹性模量与动态弹性模量的差别,以及弹性模量对该材料等温低周疲劳性能参数的影响。结果表明:当循环寿命较大(Nf大于5 000周)时弹性模量对等温低周疲劳寿命预测的精确度有较大的影响,分散带的大小有数量级的差别,应该采用疲劳试验机测出的弹性模量对等温低周疲劳寿命进行预测。
|
| 关 键 词： | 航空、航天推进系统 弹性模量 分散带 疲劳 寿命 |
| 文章编号： | 1000-8055(2005)05-0768-04 |
| 收稿时间： | 2004/10/27 0:00:00 |
| 修稿时间： | 2004年10月27 |
Effect of Elastic Modulus on Parameter of Low Cycle Fatigue Performance |
| |
| ZHANG Guo-dong,SU Bin,WANG Hong,HE Yu-huai,XU Chao and LI Cheng.Effect of Elastic Modulus on Parameter of Low Cycle Fatigue Performance[J].Journal of Aerospace Power,2005,20(5):768-771. |
| |
| Authors: | ZHANG Guo-dong SU Bin WANG Hong HE Yu-huai XU Chao and LI Cheng |
| |
| Institution: | 1.Beijing Institute of Aeronautical Materials,Beijing100095,China2.School of Material Science and Engineering,Northwestern Polytechnical University,Xi'an710072,China |
| |
| Abstract: | Low cycle fatigue tests and static tension tests were performed for steel 1Cr11Ni2W2MoV,with air temperature of 500℃.The difference between static elastic modulus and dynamic elastic modulus was investigated.The effects of elastic modulus on parameter of low cycle fatigue were studied also.When fatigue life is longer than 5 000 cycles,the results of fatigue life prediction showed that elastic modulus affected the precision of fatigue life prediction to a great extent,and there was large difference in scatter band.It is necessary to use elastic modulus measured in fatigue machine to predict low cycle fatigue life. |
| |
| Keywords: | aerospace propulsion system elastic modulus scatter band fatigue life |
| 本文献已被 CNKI 万方数据 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 |
|
