Norm

ISO/DIS 20154:2017 en

Ships and marine technology - Guidelines on vibration isolation design methods for shipboard auxiliary machinery

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Over deze norm

Status Ontwerp
Aantal pagina's 11
Commissie Schepen en maritieme techniek
Gepubliceerd op 01-01-2017
Taal Engels
The purpose of this document is to provide general guidelines on the design of ship vibration isolation based on the basic methodology of vibration isolation for shipboard machinery, for example, auxiliary engine, compressor, fan, pump, etc. A well-designed vibration isolation system can significantly reduce the vibration transmission from shipboard machinery to ship structures and so the noise level onboard ship or the underwater noise radiated from ship can also be lowered. Vibration isolation concerns the use of comparatively resilient elements-called vibration isolators. Practical vibration isolators usually consist of springs, of elastomeric elements with damping, or of combinations of these. The primary purpose of isolators is to attenuate the transmission of vibrations, whereas the main purpose of dampers is the dissipation of mechanical energy. Simple models based on systems with a single degree of freedom are useful for establishing some fundamental relations, such as single-stage isolation. Extensions of these models can account for the non-rigidity of supports and isolated items, as well as for reaction effects on vibration sources. More complex models apply to two-stage isolation that can provide greater attenuation than single-stage isolation systems. As common measures onboard ship, single stage and double stage vibration isolation design methods are suggested in this standard.

Details

ICS-code 47.020.01
Nederlandse titel Ships and marine technology - Guidelines on vibration isolation design methods for shipboard auxiliary machinery
Engelse titel Ships and marine technology - Guidelines on vibration isolation design methods for shipboard auxiliary machinery

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