الفهرس 
Survey on some perturbation methodsOnly 14 pages are availabe for public view
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Abstract
The importance of the considered pendulum models due to their great applications in different fields like in physics and engineering applications based on vibrating systems such as shipbuilding and ships motion, structure vibration, flow induced vibration, rotor dynamics, pumps compressors and transportation devices Moreover, the pendulum vibration absorbers are widely used in practice for reducing the level of vibrations of engineering structures (chimneys, television towers, bridges, tall buildings, antennas), auto-balancing shafts, and so on.