Noise and Vibration Associates (NVA -
established 1989 and operating from Newcastle Upon Tyne, North East England)
offers measurement/consultancy and education/training services and the provision
of specialised noise & vibration related software.
NVA's general workload includes industrial noise
assessment, planning, traffic noise assessment, legal/expert testimony, and the
provision of lecturing and training courses.
NVA specialist areas have been theoretical aspects of resilient mounting
systems, ship noise (onboard and underwater) and the development of technical
software and "user interfaces" independently and on behalf of clients.
This has included assistance in the modeling of Drillstring Vibration for
British Gas and Ship's Onboard and Underwater Noise for Vosper Thornycroft (UK).
Vibration
Isolation Software
NVA
software includes a PC based application for calculations relating to resilient
isolation of rigid bodies. This modest development is referred to as the
"Vibration Isolation Project" and, consequently - VIP
Software
Modelling
allows the rapid definition and analysis (natural frequencies, response to
steady and transient forces, transmissibility, etc) of systems of a limitless
number of rigid bodies (typically machinery, rafts, etc) connected together and
to a foundation by a limitless number of "springs" (typically
"resilient mounts", "bellows", etc). Users may compile and
efficiently utilise databases of inertial "bodies" (e.g. generator
sets) and "components" (e.g. engines, alternators, gearboxes), as well
as databases of "resilient mounts".
This
software is presently available (VIP Download)
in demonstration form at no cost and will subsequently be available for
purchase. If the software is deemed to provide a useful tool, NVA is hoping to
attract sponsors to define development areas and requirements (e.g. animations,
non-linear analyses for shock response, inclusion of "buffers"), in
which case the software will ultimately be co-owned by
sponsors.
Minor
Software.
There
are also free applications for minor noise and vibration related calculations -
[NVA General Software].
