Rotated mechanical equipment is the main source of mechanical vibration on the ship, vibration isolation measures for mechanical equipment is an effective mean to reduce the transmission of mechanical vibration to the foundation of hull structure. The effect of vibration isolation is related to the first frequency of the vibration isolation system. This paper studies the first natural frequency of elastic installation equipment with or without pipeline system, analyzes the influence of different angle pipelines on the first frequency, and analyzes the influence of different flexible pipe stiffness on the natural frequency.
