... the loosening performance. Cumulative differential loosening rotation of the bolt head is converted to a gradual loss in the bolt tension and joint clamp load. Model prediction of the self-loosening behavior is experimentally validated. Figure 3 shows the kinematic analysis of the sliding motion. When...

... bolted joints threaded fasteners bearing friction torque-tension relationship thread friction torque pitch self-loosening The safety, the reliability, and the quality of bolted connections are significantly affected by both the level and the stability of the fastener tension, which is most...

...Sayed A. Nassar; Basil A. Housari A mathematical model and an experimental procedure are presented to study the self-loosening phenomenon of threaded fasteners that are subjected to cyclic transverse loads. The study investigates the effect of thread pitch, initial bolt tension, and the amplitude...