... 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. From the free body diagram of the fastener in Fig. 4 , the frictional...

... and safety of bolted connections, especially in critical applications. fasteners friction reliability torque bolted joints threaded fasteners bearing friction torque-tension relationship thread friction torque pitch self-loosening The safety, the reliability, and the quality...

...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...