Effect of the countersunk hole depth on tensile-tensile fatigue behavior of riveted specimens of AA2024-T3 alloy
Effect of the countersunk hole depth on tensile-tensile fatigue behavior of riveted specimens of AA2024-T3 alloy
复制标题
沉孔深度对AA2024-T3合金铆接试样拉拉疲劳行为的影响
DOI：
10.1016/j.engfailanal.2020.104639
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发表时间：
2020
影响因子：
4
通讯作者：
Yimin Zhang
中科院分区：
文献类型：
--
作者：
Sen Tian;Changyou Li;Weibing Dai;Dawei Jia;Hongzhuang Zhang;Mengtao Xu;Yumeng Yuan;Yuzhuo Liu;Yimin Zhang
研究了沉孔深度（0.65、0.90和1.20 mm）对铆接AA2024-T3合金疲劳性能的影响。用扫描电镜观察了试样的疲劳断裂。采用有限元法对沉孔处的应变进行了分析。计算了沉孔的应力强度和应力集中系数。通过对沉孔附近应变的测量，验证了有限元分析和理论计算的合理性。沉置深度为1.20 mm的试样高周疲劳寿命远小于其他试样。低周疲劳寿命变化不大。
This study investigated the effect of countersunk hole depths (0.65, 0.90, and 1.20 mm) on the fatigue performance of the riveted AA2024-T3 alloy. The fatigue fracture of the samples was observed by scanning electron microscopy. The strain at the countersink hole was analyzed by finite element (FE) method. The stress intensity and stress concentration factor of the countersunk holes were calculated. The rationality of the FE analysis and theoretical calculation was verified by measuring the strain near the countersunk holes. The high cycle fatigue life of the samples with a countersunk depth of 1.20 mm was far less than the other samples. In contrast, the low cycle fatigue life changed insignificantly.