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The circuit breaker is an important part of control and protection in the power system. Mechanical failure is the main fault of circuit breakers, and the loosening of fasteners is one of the typical mechanical faults. The self-loosening of bolted joints is closely related to the vibration, especially transverse vibration. There is strong vibration while the circuit breakers are opened and closed....
This paper presents a study on the vibration of a suspension pipeline bridge subjected to moving pig. The structure is modeled as a single-span beam suspended by cables. The pig and the liquid in front of it are simulated as a sequence of equidistant moving loads with identical weight. The governing equation of motion is discretized by Newmark's method and then solved by a rigorous incremental-iterative...
This paper provides accurate reference data for vibration restraint. Based on the single degree of freedom linear VIV model of experience, the spanwise responses of pipeline bridge were deduced by synthetically considering factors such as model shape and damping ratio. By taking a long-span cable-stayed pipeline bridge as example, vortex-induced vibration responses were analyzed under different wind...
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