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科技导报
| 研究论文 2015, 33(5): 72-77
航空发动机滑油系统动态故障分析
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孙杨慧1,2 , 杨坤1,2 , 侯乃先1,2 , 佘云峰1,2
作者信息
1. 中航商用航空发动机有限责任公司, 上海 201108;
Dynamic fault analysis of engine lubrication system
Affiliations
出版时间: 2015-03-13
doi: 10.3981/j.issn.1000-7857.2015.05.011
文章导航
为解决航空发动机滑油系统安全性分析中容错与余度备份系统的故障建模与分析,提出了基于动态逻辑门和模块化思想的动态故障树分析方法。针对滑油系统某典型的故障状态,开展动态故障树建模,与传统的静态故障树建模方法进行比较。分析结果表明,使用静态故障树建模得到的滑油系统故障发生频率远远偏离系统真实的故障发生频次(误差将近20 倍);动态故障树建模可以准确描述系统故障的时序关系,且在保证分析效率的前提下精确评估滑油系统的故障发生概率。动态故障树建模方法在航空发动机系统尤其是民用航空发动机系统安全性评估中具有非常广泛的应用前景。
发动机
/
滑油系统
/
安全性评估
/
动态故障建模
In this paper, a dynamic fault tree model was first applied to evaluate safety of the engine lubrication system with faulttolerance and redundancy configuration. Using the dynamic fault tree and classical fault tree methods, a typical failure condition of the lubrication system was modeled and analyzed. The results show that the classical fault tree model cannot quantify the dynamic behavior aspect of system safety in a reasonable fashion, and prediction of failure probability deviates far from the actual situation (analytical errors up to 20 times). Meanwhile, the dynamic fault tree model not only correctly describes the sequence-based failure conditions, but also efficiently yields better quantitative failure probability calculation, demonstrating that dynamic fault tree model will have high potential in safety analysis of engine systems.
engine
/
lubrication system
/
safety analysis
/
dynamic fault modeling
孙杨慧, 杨坤, 侯乃先, 佘云峰.
航空发动机滑油系统动态故障分析.
科技导报,
2015
, 33
(5)
: 72
-77
.
DOI: 10.3981/j.issn.1000-7857.2015.05.011
SUN Yanghui, YANG Kun, HOU Naixian, SHE Yunfeng.
Dynamic fault analysis of engine lubrication system[J].
Science & Technology Review ,
2015
, 33
(5)
: 72
-77
.
DOI: 10.3981/j.issn.1000-7857.2015.05.011
2015年第33卷第5期
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文章信息
doi: 10.3981/j.issn.1000-7857.2015.05.011
接收时间：2014-09-01
首发时间：2015-03-27
出版时间：2015-03-13
收稿日期：2014-09-01
修回日期：2015-01-01
https://castjournals.cast.org.cn/joweb/kjdb/CN/10.3981/j.issn.1000-7857.2015.05.011
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2种不同金属材料的力学参数
科 属数 种数 占总种数比例 属 种数 占总种数比例 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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