RESEARCH OF SHIP VIBRATION AND NOISE AND THEIR EFFECTS ON HUMANS
Main researcher
: SENJANOVIĆ, IVO (57053) Assistants
RADANOVIĆ, BOŽIDAR (112954)
JURAS, KRSTE (143135)
BOBANAC, NENAD (147720)
MEDJA, BORIS (177681)
MIRKOVIĆ, GORAN (143146)
GRUBIŠIĆ, RAJKO (74052)
VLAŠIĆ, DALIBOR (181815)
MUTEVELIĆ, DAMIR (181725)
NARANČA, NIKOLA (900576)
KULJAČA, OGNJEN (900799)
Type of research: applied Duration from: 03/01/91. Papers on project (total): 18
Institution name: Brodarski institut, Zagreb (192) Department/Institute: Special Technologies Department Address: Av. V. Holjevca 20 City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)10 6551 022
Fax: 385 (0)10 6550 947
Summary: Constant increase of onboard vibration and noise as a
result the modern shipbuilding development requires a protection system
which covers not only humans, but also equipment and ship structure. This
research includes the segments logically following in the sequence of
long-standing research of a number of specialists in this field. It
includes empirical and semiempirical methods of onboard vibration and
noise prediction. The initial investigation of the ship screw propeller as
one of the most important sources of onboard vibration and noise has been
performed. The characteristics of some ship structure elements have been
researched in order to optimise vibration and noise reduction methods.
Also, the initial investigation of simultaneous effect of vibration and
noise on humans has been made.
Keywords: ship vibration, ship noise, semi-empirical prediction method, propeller excitation, model-based prediction, torsinal vibration, propeller noise, sound propagation and radiation, human susceptibility to vibration and noise
Research goals: The aim of the research is to develop a more
accurate and reliable ship vibration calculation empirical method based on
the measurement data collected and systemised in Brodarski Institute.
Investigate, develop and apply an optimal model-based prediction method
for propeller induced hull pressure forces. Develop full scale measuring
techniques, to obtain model scale-full scale correlation, investigate
optimal correlation parameters and establish data base of measuring
results. Develop statistical signal processing methods for propeller
induced hull pressure signal. Perform model scale and full scale
measurements, and investigate relevant parameters of model scale-full
scale correlation. Improve the method for the calculation of shafting
torsional vibration onboard for all types of radial engines and various
shafting-propulsor combinations. Investigate theoretically and
experimentally propulsor acoustical characteristics on smaller ships, as
well as acoustical characteristics of ship structure in order to define
propulsor design requirements and optimise sound protection methods.
Investigate multifrequency and multidirectional effect of vibration on
humans as well as combined effect of onboard vibration and noise.
Investigate structure and passengers shock loading of a free-falling
lifeboat. Propose a method for calculating the parameters relevant for the
lifeboat designing.
COOPERATION - INSTITUTIONS
Name of institution
: FAKULTET STROJARSTVA I BRODOGRADNJE Type of institution: University/Faculty Type of cooperation: Joint publishing of scientific papers City: 10000 - Zagreb, Croatia Other information about the project.