The purpose of this paper is to estimate the fatigue life of 2024 aluminum plates in riveted joints under the influence of cyclic loading. First, the factors affecting the plastic equivalent strain resulting from the riveting process have been identified using the finite element method. For this purpose, a three-dimensional elastoplastic model is used for simulation. The relevant geometrical parameters such as the rivets shank length, the rivets shank diameter, and dimensional tolerances as well as pattern of where the rivets are and the material of the rivet joints are determined and subsequently the fatigue life of the aluminum joint is obtained by experimental tests. Then the fatigue life of the riveted joints is calculated using multiple site damage (MSD). To prove the validity of the analytical results, numerical modeling and experimental tests are performed on 2024 aluminum plates in riveted joints. Numerical analysis has been performed using linear fracture mechanics and boundary element method (BEM) for the fatigue crack growth of 2024 aluminum plates in riveted joints. Finally, the results of the analytical method for fatigue life are compared with experimental tests and numerical method that results in acceptable achievements.

中文翻译：

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铝合金2024板材铆接结构疲劳性能预测

本文的目的是估算铆接接头中 2024 铝板在循环载荷影响下的疲劳寿命。首先，使用有限元方法确定了影响铆接过程中产生的塑性等效应变的因素。为此，使用三维弹塑性模型进行模拟。确定了铆钉杆长度、铆钉杆直径、尺寸公差等相关几何参数以及铆钉位置和铆钉接头材料等相关几何参数，通过实验得到了铝接头的疲劳寿命。测试。然后使用多点损伤 (MSD) 计算铆接接头的疲劳寿命。为了证明分析结果的有效性，对铆接接头中的2024铝板进行了数值模拟和实验测试。使用线性断裂力学和边界元法 (BEM) 对铆接接头中 2024 铝板的疲劳裂纹扩展进行了数值分析。最后，将疲劳寿命分析方法的结果与实验测试和数值方法进行了比较，取得了令人满意的结果。