A series of fatigue tests were carried out on scarfed lap joints to explore the effect of lap angle on its fatigue performance. Finite element method (FEM) was employed to analyze the stress distribution around the circular holes under tensile load. On the basis of calculation results, fatigue life was predicted by nominal stress approach. The results show that the first row of fasteners undergoes the most severe stress concentration. The fatigue life increases with the increase of lap angle. The relationship between lap angle and fatigue life can be expressed as;lgN=6. 047-1. 020× 0. 6601α.%为了研究搭接角度对斜搭接连接件疲劳特性影响的规律,对不同搭接角度的斜搭接连接件进行了疲劳试验,并利用有限元软件对紧固孔在拉伸状态时的应力场进行了分析,采用名义应力法对紧固孔的疲劳寿命进行了估算.结果表明:失效部位发生在第一排孔边处；疲劳寿命随着搭接角度的增加而增大；搭接角度与疲劳寿命近似曲线关系为lgN=6.047-1.020×0.6601a.
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