基于DFR法的连接结构疲劳可靠性分析

Reliability Analysis of Mechanical Fastener Joints Based on Detail Fatigue Rating

通过疲劳试验和DFR方法,研究了LY12CZ挤压强化连接孔的疲劳寿命增益.结果表明,相对于未强化孔而言,强化孔的特征寿命β的点估计值β大约是未强化孔的2.4倍,强化孔的DFR值大约是未强化孔的1.3倍.

Fatigue life of coldworking strengthened parts has been researched, by fatigue test and detail fatigue rating.The results show that the point estimation of eigenvalue life is about 2.4 times of nonstrengthened parts, and DFR value is about 1.3 times.