Single-lap joints (SLJs) with similar and dissimilar adherends are extensively used in industrial applications. This paper aims to investigate the interfacial mechanical behavior of SLJs subjected to dynamic loading. The shear-lag model is employed to predict the mechanical behavior of SLJs. The analytical expressions of the interfacial slip, normal stress in the adherends and interfacial shear stress are derived for the SLJs with similar adherends by using the method of separation of variables. The Laplace transform method is applied to numerically simulate the dynamic response of SLJs with dissimilar adherends. Results obtained from the finite element simulation are consistent well with the predictive model. It is found that the more unbalanced the SLJ is, the more non-uniform distribution of interfacial stress is, thus reducing the load-bearing capacity of the SLJ. This inspires us to rationally design a balanced joint to improve the load-bearing capacity. While the emphasis of the present study is on the mechanical behavior of SLJs, the analytical model is equally applicable to the interface analysis of other structures (e.g. concrete-steel bar, fiber-matrix in the composites, etc.). Furthermore, this theoretical method can be also simplified to explain the stress transfer subjected to the (quasi-)static loading with approximately zero density or zero loading speed in the governing equation.

具有相似和不同被粘物的单搭接接头 (SLJ) 广泛用于工业应用。本文旨在研究动态载荷作用下 SLJ 的界面力学行为。剪切滞后模型用于预测 SLJ 的机械行为。采用变量分离法，推导出了具有相似粘附体的SLJ的界面滑移、粘附体法向应力和界面剪应力的解析表达式。拉普拉斯变换方法用于数值模拟具有不同粘附体的 SLJ 的动态响应。从有限元模拟获得的结果与预测模型非常一致。发现SLJ越不平衡，界面应力分布越不均匀，从而降低了 SLJ 的承载能力。这启发我们合理设计平衡接头，以提高承重能力。虽然本研究的重点是 SLJ 的力学行为，但该分析模型同样适用于其他结构（例如混凝土-钢筋、复合材料中的纤维-基体等）的界面分析。此外，该理论方法还可以简化以解释在控制方程中密度近似为零或加载速度为零的（准）静态加载下的应力传递。该分析模型同样适用于其他结构（例如混凝土-钢筋、复合材料中的纤维-基体等）的界面分析。此外，该理论方法还可以简化以解释在控制方程中密度近似为零或加载速度为零的（准）静态加载下的应力传递。该分析模型同样适用于其他结构（例如混凝土-钢筋、复合材料中的纤维-基体等）的界面分析。此外，该理论方法还可以简化以解释在控制方程中密度近似为零或加载速度为零的（准）静态加载下的应力传递。