[1]李海梅,宋刚,刘永志..金属材料疲劳极限的估算[J].郑州大学学报(工学版),2002,23(04):26-29,39.[doi:10.3969/j.issn.1671-6833.2002.04.007]
　Li Haimei,SONG Gang,Liu Yongzhi.Estimation of the fatigue limit of metallic materials[J].Journal of Zhengzhou University (Engineering Science),2002,23(04):26-29,39.[doi:10.3969/j.issn.1671-6833.2002.04.007]

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金属材料疲劳极限的估算()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

23

期数:

2002年04期

页码:

26-29,39

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Estimation of the fatigue limit of metallic materials

作者:

李海梅; 宋刚; 刘永志.

郑州大学材料工程学院,河南,郑州,450002, 郑州大学材料工程学院,河南,郑州,450002, 郑州大学材料工程学院,河南,郑州,450002

Author(s):

Li Haimei; SONG Gang; Liu Yongzhi

关键词:

疲劳极限;  S-N曲线;  估算公式

Keywords:

fatigue limit;  S-N curve;  Estimation formula

DOI:

10.3969/j.issn.1671-6833.2002.04.007

文献标志码:

A

摘要:

金属材料疲劳极限通常是用众多的试验结论测试拟合得出的,需要高昂的费用,且有时无法用试验获得特殊工况下的数值.给出一个估算非对称循环疲劳极限σr的简便计算方法,可利用有限的数据,确定材料的疲劳极限,减少试验次数,降低试验条件的要求.在确定了疲劳极限值和静抗拉强度极限后,利用丁氏公式,用AUTOLISP实现了等寿命曲线图的绘制,讨论了拟和公式中各参数的确定方法,并对拟和结果和实验数据进行了比较.结果表明,该方法所得结果与试验结果吻合较好,且绘制疲劳曲线方便、快捷.

Abstract:

The fatigue limit of metal materials is usually obtained by testing and fitting with numerous experimental conclusions, which is expensive and sometimes it is impossible to obtain values under special working conditions. A simple calculation method for estimating the asymmetric cyclic fatigue limit σr is given, which can use limited data to determine the fatigue limit of materials, reduce the number of tests, and reduce the requirements of test conditions. After determining the fatigue limit value and static tensile strength limit, the Ding’s formula was used to draw the isolife curve by AUTOLISP, the determination method of each parameter in the sum formula was discussed, and the sum result and experimental data were compared. The results show that the results obtained by this method are in good agreement with the experimental results, and it is convenient and fast to draw the fatigue curve.

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