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  2. Noise and vibration on maritime vessels - Wikipedia

    en.wikipedia.org/wiki/Noise_and_vibration_on...

    Large vessels sometimes use electrical propulsion motors, the electrical power being provided by a diesel generator. Noise and vibration of electric motors include, besides mechanical and aerodynamic sources, an electromagnetic source due to electromagnetic forces which is responsible for the "whining noise" of the motor.

  3. Vortex-induced vibration - Wikipedia

    en.wikipedia.org/wiki/Vortex-induced_vibration

    Vortex-induced vibration (VIV) is an important source of fatigue damage of offshore oil exploration drilling, export, production risers, including steel catenary risers (SCRs) and tension leg platform (TLP) tendons or tethers. These slender structures experience both current flow and top-end vessel motions, which both give rise to the flow ...

  4. Shock-mitigating suspension seats - Wikipedia

    en.wikipedia.org/wiki/Shock-mitigating...

    Shock-mitigating suspension seats are designed to reduce the severity of vibration and mechanical shock.These seats are used in vehicles that operate in high exposure environments, such as high-speed watercraft, military platforms, construction, forestry and agricultural vehicles, and industrial trucks (such as fork lifts).

  5. Active vibration control - Wikipedia

    en.wikipedia.org/wiki/Active_vibration_control

    Active vibration control is the active application of force in an equal and opposite fashion to the forces imposed by external vibration. With this application, a precision industrial process can be maintained on a platform essentially vibration-free. Many precision industrial processes cannot take place if the machinery is being affected by ...

  6. Springing - Wikipedia

    en.wikipedia.org/wiki/Springing

    Springing is a resonance phenomenon, and it can occur when the natural frequency of the 2-node vertical vibration of the ship equals the wave encounter frequency or a multiple therefrom. [1] Whipping is a transient phenomenon of the same hull girder vibrations due to excessive impulsive loading in the bow or stern of the vessel.

  7. Category:Mechanical vibrations - Wikipedia

    en.wikipedia.org/wiki/Category:Mechanical_vibrations

    Active vibration control; Anvis Group; Ayodele Awojobi; B. Balancing of rotating masses; ... Noise and vibration on maritime vessels; Noise, vibration, and harshness;

  8. Low magnetic electric motor - Wikipedia

    en.wikipedia.org/wiki/Low_magnetic_electric_motor

    Electric motors on board naval vessel may experience shock and vibration. A dedicated rigid design will allow electric motors to withstand these environmental impacts and provide sufficient active hardening. Passive hardening is done by installation of shock and vibration mounts onto the motor and/or system. Test method and limits are described ...

  9. Seakeeping - Wikipedia

    en.wikipedia.org/wiki/Seakeeping

    The responses are a function of the environment and the vessel characteristics. Seakeeping performance criteria : the established limits for the ship's responses. These are based on the ship motions and the accelerations experienced, and include comfort criteria such as noise, vibration and sea sickness , performance based values such as ...

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