Threaded fasteners are widely used in a variety of engineering applications. The quality of threaded connections directly affects the service performance. By aiming to acquiring a deeper understanding of the performance characteristics, the mechanical behavior of bolted joint was examined using transverse tensile test. The force–displacement curves of bolted joints exhibit linear characteristics during the first stage, while subsequently the curves exhibit various shapes due to assembly clearance. The tangential stiffness of the bolted joint decreases rapidly when the connected plate slips. And the transverse load threshold between various stages is positively correlated with the clamping force of threaded fastener. The experimental data was fitted to obtain a piecewise function that characterizes the entire slip curve of bolted joints under transverse loading. Main characterization parameters in various stages were analyzed and discussed based on the experimental results, which can aid in the design and using of bolted joints.

螺纹紧固件广泛用于各种工程应用。螺纹连接的质量直接影响服务性能。为了更深入地了解性能特征，使用横向拉伸试验检查了螺栓连接的机械性能。螺栓连接的力-位移曲线在第一阶段表现出线性特征，随后由于装配间隙，曲线表现出各种形状。当连接板滑动时，螺栓连接的切向刚度迅速降低。并且各个阶段之间的横向载荷阈值与螺纹紧固件的夹紧力呈正相关。拟合实验数据以获得分段函数，该函数表征横向载荷下螺栓连接的整个滑移曲线。根据实验结果对各阶段的主要表征参数进行了分析和讨论，有助于螺栓连接的设计和使用。