P1992-10
lb. V . ScheepsbouwküRek
Technische Hogeschool
The 5th Marine Technology
Symposium
Noise & Vibration, Winter Navigation,
Hydrodynamics
V A L T I O N T E K N I L L I N E N TUTKIMUSKESKUS STATENS TEKNISKA FORSKNINGSCENTRAL TECHNICAL RESEARCH CENTRE OF F I N L A N D
UDC 629.12:534
629.07?:532.5 Keywords:
ships, noise (sound), vibration, ice navigation, hydrodynamics
VTT SYMPOSIUM 92
The 5th Marine Technology Symposium
Noise & Vibration, Winter Navigation, Hydrodynamics
Espoo, January 11-12,1988
Organized by
The Technical Research Centre of Finland (VTT),
Ship Laboratory
VALTION TEKNILLINEN TUTKIMUSKESKUS
STATENS TEKNISKA FORSKNINGSCENTRAL
TECHNICAL RESEARCH CENTRE OF FINLAND
Espoo 1988
ISBN 951-3&-3304-6 ISSN 0357-9387
Copyright © Valtion teknillinen tutkimuskcskus (VTT) 1988
JULKAISIJA - UTGIVARE - PUBLISHER
Valtion tcknillinen tutkimuskcskus (VTT), Vuorimiehentie 5,02150 Espoo puh. vaüide (90) 4561, teleksi 122972 vttha sf
Statens tekniska forskningscentral (VTT), Bcrgsmansvügcn 5, 02150 Esbo tel. vaxel (90) 4561, telex 122972 vttha sf
Technical Research Centre of Finland (VTT), Vuorimiehentie 5, SF-O2150 Espoo, Finland phone internat. + 358 0 4561, telex 122972 vttha sf
VTT, Laivatekniikan laboratorio, Tietotie 1,02150 Espoo puh. vaihde (90) 4561, telekopio (90) 464 424
VTT, Skeppstekniska laboratoriet, DatavSgen 1,02150 Esbo tel. vSxel (90) 4561, telefax (90) 464 424
VTT. Ship Laboratory, Tietotie 1, SF-02150 Espoo, Finland phone internat. + 358 0 4561, telefax + 358 0 464 424
3
-FOREWORD
T h i s v o l u m e c o n t a i n s t h e p a p e r s p r e s e n t e d a t t h e f i f t h V T T - M a r i n e T e c h n o l o g y Symposium, w h i c h was h e l d on 12 and 13 J a n u a r y 1988 i n H a n a s a a r i , E s p o o . T h e s y m p o s i u m c o v e r e d c u r r e n t r e s e a r c h w o r k on s h i p s t r u c t u r e s a s w e l l a s i n h y d r o d y n a m i c s .
The f i r s t day was d e v o t e d p a r t l y t o r e s e a r c h on a c o u s t i c and v i b r a t o r y p r o p e r t i e s o f s h i p s t r u c t u r e s . T h e m a i n e m p h a s i s , h o w e v e r , was l a i d upon s t r u c t u r a l p r o b l e m s c o n n e c t e d t o i c e n a v i g a t i o n . A c o n s i d e r a b l e p a r t o f t h e o n g o i n g w o r k i n t h i s a r e a h a s b e e n s u p p o r t e d by t h e T e c h n o l o g y D e v e l o p m e n t C e n t e r T E K E S , w h i c h i s h e r e b y g r a t e f u l l y a c k n o w l e d g e d .
The theme o f t h e s e c o n d day was h y d r o d y n a m i c s . T h e m a i n a r e a s c o v e r e d w e r e s e a k e e p i n g , m a n o e u v r i n g a n d p r o p e l l e r s . A d d i t i o n a l l y a p r e s e n t a t i o n was made on p o s s i b l e new a t t r a c t i o n s f o r c r u i s e v e s s e l s . U n f o r t u n a t e l y some u n e x p e c t e d d i f f i c u l t i e s h a v e d e l a y e d t h e p u b l i c a t i o n o f t h e s e p r o c e e d i n g s , I h o p e , h o w e v e r , t h a t t h i s v o l u m e w i l l f u r t h e r d i s s e m i n a t e t h e w o r k p r e s e n t e d . E s p o o , November 11, 1988 J u h a n i S u k s e l a i n e n
5
-CONTENTS
page
FOREWORD 3 SOUND RADIATION AND TRANSMISSION LOSS OF SHIP STRUCTURES 7
P e r t t i Hynna
FAST SINE SWEEP EXCITATION I N SHIP VIBRATION TESTING 25 Ismo Vessonen
ANALYSIS OF PERMANENT DEFLECTION ON SHIP SHELL PLATING 43 K a i K a t a j a m a k i
ACTUATING FORCES IN CONTROLLABLE PITCH PROPELLERS 73 J a r i K o s k i k i v i
TESTS OF PROPELLER ICE LOADS I N LABORATORY AND FULL SCALE 105 M a t t i J u s s i l a
ICE LOAD MEASURING SYSTEM FOR LONG TERM MEASUREMENTS 123 Pekka K o s k i n e n
SHIP MAIN DIMENSIONS AND THE SEAKEEPING PERFORMANCE 133 Tuomo K a r p p i n e n
H e i k k i H e l a s h a r j u T i m o A i t t a
ON THE DEVELOPMENT OF FAIRWAY ANO SHIP MODELS TO SHIP- 169 HANDLING SIMULATOR
M a r t t i H e i k k i l a
NEW ATTRACTIONS ON SMALL CRUISE VESSELS 191 M a r 1 - H e l e n a H o i k k a
SOME ASPECTS OF MOTION DYNAMICS OF UNDERWATER VEHICLES 207 Seppo K a l s k e
RECENT DEVELOPMENTS I N SEAKEEPING MODEL TESTING AT THE 259 SHIP LABORATORY
J e r z y M a t u s i a k
PARAMETER VARIATION AS AN OPTIMIZATION TOOL OF DUCT- 285 PROPELLER UNITS
