P1986-2
UDC 629.12:534:532 Keywords:ships, shi]ihuiiding. vibration, noise (sound), hydrodynamics
V T T S Y M P O S I U M 68
T H E 4TH MARINE TECHNOLOGY SYMPOSIUM
Ship Vibration, Noise & Hydrodynamics
Espoo, January 13-14, 1986
Organized by
The Technical Research Centre of Finland (VTT),
Ship Laboratory
Reprint, April 1988
V A L T I O N T E K N I L L I N E N TUTKIMUSKESKUS
STATENS TEKNISKA FORSKNINGSCENTRAL
T E C H N I C A L RESEARCH CENTRE OF F I N L A N D
Espoo 1986
JSBN 9 5 1 - 3 8 - 2 6 7 8 - 3 ISSN 0 3 5 7 - 9 3 8 7
Copyright © Valtion teknillinen tutkimuskeskus ( V T T ) 1986
J U L K A I S I J A - U T G I V A R E - P U B L I S H E R
Valtion teknillinen tutkimuskeskus ( V T T ) , Vuorimiehentie 5, 02150 Espoo puh. vaihde (90) 4561, teleks 122972 vttha sf
Statens tekniska forskningscentral ( V T T ) , Bergsmansvagen 5, 02150 Esbo tel. vaxel (90) 4561, tele.x 122972 vttha sf
Technical Research Centre of Finland ( V T T ) , Vuorimiehentie 5, S F - 0 2 1 5 0 Espoo, Finland phone internat. + 358 0 4561, tele.x 122972 vttha sf
V T T , Laivatekniikan laboratorio, Tietotie 1, 02150 Espoo puh, vaihde (90) 4561
V T T , Skeppstekniska laboratoriet, Dat.ivagen 1, 02150 Esbo tcL vaxel (90) 4561
V T T , Ship Laboratory, Tietotie 1, S F - 0 2 1 5 0 Espoo, Finland phone internat. + 358 0 4561
3
-FOREWORD
VTT Ship L a b o r a t o r y has t r a d i t i o n a l l y h e l d seminars f o c u s i n g on some areas among i t s f i e l d s o f a c t i v i t y on r o u g h l y b i a n n u a l b a s i s . The f o u r t h one documented 1n t h i s volume was devoted p a r t l y t o v i b r a t i o n and n o i s e problems and p a r t l y t o hydrodynamics, w h i c h has been o n l y s p a r s e l y c o v e r e d i n e a r l i e r seminars i n t h e s e r i e s .
A l s o t h i s t i m e we had the p r i v i l e d g e o f h a v i n g some d i s t i n g u i s h e d a u t h o r s f r o m t h e i n d u s t r y t o round o f f the t r e a t m e n t o f the themes, which i s hereby acknowledged. My s i n c e r e thanks are a l s o d i r e c t e d t o a l l t h e a u t h o r s and p a r t i c i p a n t s w h i c h c o n t r i b u t e d t o an s u c c e s s f u l e v e n t . H o p e f u l l y these p r i n t e d p r o c e e d i n g s w i l l f u r t h e r d i s s e m i n a t e the r e s u l t s o f work p r e s e n t e d . Espoo, June 13, 1986 J u h a n i S u k s e l a i n e n D i r e c t o r o f the L a b o r a t o r y
5
-CONTENTS
page
FORWARD 3 SOLUTION OF SHIP VIBRATION PROBLEMS - CURRENT SITUATION 7
AND FUTURE PROSPECTS M a t t i . K. Hakala
SUBSTRUCTURE SYNTHESIS IN THE DYNAMIC ANALYSIS OF SHIP 35 STRUCTURES
Seppo Ki'vimaa
MODELLING OF THE SURROUNDING WATER IN SHIP VIBRATION 73 CALCULATIONS
Paul K l i n g e
TORSIONAL AND LATERAL VIBRATION CALCULATIONS OF PROPELLER 93 SHAFTING
Pekka Koskinen Markku Juntunen
PREDICTION METHODS FOR NOISE TRANSMISSION IN SHIPS 115 P e r t t i Hynna
NOISE PROBLEMS FROM SHIPYARDS' POINT OF VIEW 131 Markku V a h t e r i
THE DESIGN OF CONTRA-ROTATING PROPELLERS 147 Pyry V a i n i o
Jarmo S a v i k u r k i Jaakko V . Pylkkanen
A CONCEPT FOR THE APPROXIMATIVE DESIGN OF WAKE ADAPTED 189 HEAVILY LOADED PROPELLER IN EFFECTIVE WAKE FIELD
Jaakko V . Pylkkanen
A THREE DIMENSIONAL SHIP MOTION CALCULATION METHOD - 217 COMPARISON WITH EXPERIMENTS
Seppo Kalske
SPEED ANO MANOEUVRING TRIAL MEASUREMENTS 245 H a r t t i H e i k k i l a
Jukka Tuovinen
THEORETICAL SOLUTIONS OF SOME PARTICULAR PROBLEMS OF SHIP 259 HYDRODYNAMICS
J e r z y Matusiak
RESISTANCE AND PROPULSION CHARACTERISTICS OF SIMPLIFIED 275 HULL FORMS
