Determination of Reduction Factors to Helicopter Dynamic Components

摘要：

The factor of life scatter is used to depict the dispersibility of fatigue strength in low cycle fatigue, but in high cycle fatigue that is the fatigue strength reduction factor. The fatigue strength reduction factor and the cycle counting method have an important effect on the fatigue life of dynamic components. Now rain-flow cycle counting method is the common method adopted by rotorcraft industry. The fatigue strength reduction factors were determined for the known and unknown standard deviation respectively in the assumption of normal distribution and logarithmic normal distribution of the fatigue strength. Based on versus analysis of fatigue strength reduction factors in both U.S. and European helicopter companies, the profitable calculation method was established for home helicopters.

关键词： helicopter dynamic component fatigue strength reduction factor safe endurance limit

作者: MU Zhitao LIU Wenlin YU Dazhao ZHOU Kai

作者单位: Airborne Vehicle Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, Shandong, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1850-1855

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）