摘要
通过对耳片在不同加载角度下进行受力分析,针对耳片受斜向拉-压疲劳载荷的寿命分析问题,对压缩载荷进行等效处理,得到有效载荷系数λ,将疲劳载荷谱等效为P_(max)~λP_(min),然后通过细节疲劳额定值(DFR)方法得到耳片结构的疲劳寿命,最后通过加载角为45°的耳片疲劳试验对该方法进行了验证,证明该方法具有工程实用性。
First of all, stress analysis of lug under different loading angles was carried out. For the fatigue life analysis of lug under tension-compression loads, the compression load was treated equivalently, and the effective equivalent load factor λ was obtained. The fatigue load spectrum was equivalent to Pmax ~ λPmin, and then the fatigue life of lug structure was obtained by the Detail Fatigue Rating（DFR） method. Finally, the method was proved by the fatigue test of lug in 45° angles load, which proves that the method is practical in engineering.
出处
《机械强度》
CAS
CSCD
北大核心
2017年第3期719-722,共4页
Journal of Mechanical Strength
关键词
耳片
拉-压载荷
细节疲劳额定值
有效当量载荷系数
Lug
Tension-compression load
Detail Fatigue Rating（DFR）
Effective equivalent load factor
