[1]许德刚,秦力一,刘继军..95连杆的可靠性研究[J].郑州大学学报(工学版),2005,26(04):77-80.[doi:10.3969/j.issn.1671-6833.2005.04.019]
 Xu Degang,Qin Liyi,Liu Jijun.95 Reliability study of the linkage[J].Journal of Zhengzhou University (Engineering Science),2005,26(04):77-80.[doi:10.3969/j.issn.1671-6833.2005.04.019]
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95连杆的可靠性研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
26
期数:
2005年04期
页码:
77-80
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
95 Reliability study of the linkage
作者:
许德刚秦力一刘继军.
郑州大学工程力学系,河南,郑州,450002, 郑州大学工程力学系,河南,郑州,450002, 郑州大学工程力学系,河南,郑州,450002
Author(s):
Xu Degang; Qin Liyi; Liu Jijun
关键词:
连杆 疲劳强度 可靠性 升降法
Keywords:
DOI:
10.3969/j.issn.1671-6833.2005.04.019
文献标志码:
A
摘要:
95连杆为95系列柴油机的重要部件,为了评价其连杆的可靠性,首先利用有限元和电测技术对连杆进行了应力和加工误差分析,确定了工作应力的均值及标准差.然后以载荷为控制因素做了该连杆的升降法疲劳实验.实验表明,连杆的疲劳强度符合威布尔分布,并求出了3个分布参数.最后利用可靠性理论讨论了连杆的破坏概率.经分析计算,95连杆的额定载荷远低于最小疲劳强度,正常情况下破坏概率为零,具有足够的疲劳强度储备,能满足柴油机提高转速和改进性能的要求,这说明利用升降法求构件的疲劳强度及其分布规律是可行的,而且是一种可靠有效的方法.
Abstract:
95 connecting rod is an important part of 95 series diesel engine, in order to evaluate the reliability of its connecting rod, the stress and processing error analysis of the connecting rod is first analyzed by finite element and electrical measurement technology, and the mean value and standard deviation of the working stress are determined. Then, the fatigue test of the lifting method of the connecting rod was carried out with the load as the controlling factor. Experiments show that the fatigue strength of the connecting rod conforms to the Weibull distribution, and three distribution parameters are obtained. Finally, the reliability theory is used to discuss the failure probability of connecting rods. After analysis and calculation, the rated load of 3 connecting rod is far lower than the minimum fatigue strength, the probability of failure is zero under normal circumstances, and it has sufficient fatigue strength reserve, which can meet the requirements of diesel engine to increase speed and improve performance, which shows that it is feasible to use the lifting method to find the fatigue strength of components and its distribution law, and it is a reliable and effective method.

相似文献/References:

[1]许德刚.95连杆疲劳强度研究[J].郑州大学学报(工学版),1992,13(01):34.
 Xu Digang,95 link fatigue intensity research[J].Journal of Zhengzhou University (Engineering Science),1992,13(04):34.

更新日期/Last Update: 1900-01-01