结构细节疲劳额定值与结构细节数之间的关系研究

RESEARCH ON THE RELATION BETWEEN DFR AND STRUCTURAL DETAIL NUMBERS

针对多细节结构,介绍两种考虑结构细节数影响的概率分析模型,设计包含不同细节个数的四种试验件,并完成疲劳试验。通过试验结果(试验寿命和DFR(detail fatigue rating)值)与两种分析模型计算结果的比较,证明该分析方法是满足工程要求的。

For multi-details structure, two probability analysis models considering the effects of structural detail numbers are presented, and four types of specimen including the different number of details are designed and fatigue are completed. By comparing fatigue tests results （ test life and DFR （ detail fatigue rating） ） with the analytic methods, it is shown that the analytic methods meet the engineering requirements. tests of the specimens results from the two