Abstract:
Fiber winding can increase the friction coefficient of interface of rope, thus increase the security and stability of the entire mechanical system. Nevertheless, the specific mechanism behind this system is still not clear, especially about velocity-dependency stick-slip model. An experiment system about stick-slip from fiber winding was designed to unveil the principle during the processes of fiber sliding under different contact conditions and velocities. The research result shows that the elastic modulus and sliding velocity play a crucial role in the sliding state of interface. Brittle fiber is much easier to traverse from stick-slip state to steady slip state. The difference of friction coefficient in different sliding velocities is much more obvious under lubricated condition. The theoretical result indicate that the friction coefficient is uneven throughout the interface. It is inversely proportional to the Angle of entanglement. For stiff material the sliding state has great synchronization throughout the entire interface. This study provides a reference for manipulating the stick-slip phenomenon and improving the security in fiber winding.
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