...Xianjie Yang; Sayed A. Nassar; Zhijun Wu In this paper, a novel criterion is developed for preventing the self-loosening of preloaded threaded cap screws under cyclic transverse loading. For a known cyclic excitation, the system parameters are used in the formulation of a closed form solution...

... the bearing friction torque approaches to zero, the fastener may lead to the self-loosening. The variations of the critical bearing friction torque T b resistant to slippage under different transverse cyclic displacement excitations If the bolt preload is 30,000 N...

...Basil A. Housari; Sayed A. Nassar This study provides a theoretical and experimental investigation of the effect of the thread and bearing friction coefficients on the self-loosening of threaded fasteners that are subjected to cyclic transverse loads. The friction coefficients are varied by using...