Proceedings of the 16th International Conference on Offshore Mechanics and Arctic Engineering, OMAE’97, Volume I: Part A: Offshore Technology, ISBN: 0-7918-1799-7, The American Society of Mechanical Engineers, New York, USA (summary)

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Volume 1. Part A

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P R O C E E D I N G S OF THE 16TH IIMTERNATIONAL C O N F E R E N C E ON

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OFFSHORE MECHANICS AND ARCTIC ENGINEERING

V O L U M E I — P A R T A

EDITED BY

S . CHAKRABARTI T . KINDSHITA

H. MAEDA C . ERTEKIN

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PROCEEDINGS QF THE i 6 T H INTERNATIONAL CONFERENCE ON

O F F S H O R E M E C H A N I C S ANO A R C T I C ENGINEERING

V O L U M E 1 — P A R T A

O F F S H O R E T E C H N O L O G Y

T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S

U N I T E D E N G I N E E R I N G C E N T E R / 3 4 5 E A S T 4 7 T H S T R E E T / N E W Y O R K , N E W Y O R K 1 0 0 1 7

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ISBN No. 0-7918-1799-7

Library of Congress Number 96-84846

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FOREWORD

O f f s h o r e d e e p w a t e r d e v e l o p m e n t is p r o g r e s s i n g i n f u l l s w i n g a l l o v e r t h e w o r l d . R e c o r d w a t e r d e p t h d r i l l i n g a n d p r o d u c t i o n is b e i n g o b s e r v e d at a s t e a d y p a c e . S t r u c t u r e s t h a t are r e c e i v i n g s p e c i a l a t t e n t i o n in t h e s e d e v e l o p m e n t s are t h e f l o a t i n g o f f s h o r e s t r u c t u r e s . T h i s t r e n d is c o n t i n u i n g i n t h i s y e a r ' s O f f s h o r e T e c h n o l o g y S y m p o s i u m . A l a r g e n u m b e r o f p a p e r s d e a l w i t h f l o a t i n g m o o r e d s y s t e m s , i n c l u d i n g risers a n d c a b l e s . O t h e r a r e a s r e c e i v i n g s p e c i a l i n t e r e s t at t h e s y m p o s i u m i n c l u d e o c e a n w a v e a n a l y s i s a n d h y d r o d y n a m i c a n a l y s i s . In g e n e r a l , t h e r e s p o n s e t h i s y e a r h a s b e e n q u i t e e n t h u s i a s t i c . A t o t a l of a b o u t 95 p a p e r s w i l l be p r e s e n t e d at t h e O f f s h o r e T e c h n o l o g y S y m p o s i u m . T h e s u b j e c t m a t t e r is v a r i e d a n d i n c l u d e s t h e f o l -l o w i n g t o p i c s : • O c e a n W a v e M e c h a n i c s • C o m p u t a t i o n s of H y d r o d y n a m i c F o r c e s • O f f s h o r e S t r u c t u r e s D e s i g n • S t r u c t u r a l M e c h a n i c s • Risers a n d C a b l e s • F l o a t i n g a n d M o o r e d S t r u c t u r e s • S h i p D y n a m i c s • J a c k e t s a n d T e n s i o n Leg P l a t f o r m s • O c e a n E n e r g y T e c h n o l o g y T h e d e v e l o p m e n t o f t h e s y m p o s i u m s e s s i o n s is a c u l m i n a t i o n o f e n t h u s i a s t i c , a n d v o l u n t e e r e f f o r t s of t h e s e s s i o n o r g a n i z e r s . T h i s y e a r t h e r e h a s b e e n a s p e c i a l e f f o r t p u t f o r t h b y t h e J a p a n e s e S e s s i o n O r g a n i z e r s . W i t h t h e h e l p of t h e i r r e v i e w e r s , t h e s e s s i o n o r g a n i z e r s h a v e e n s u r e d t h a t q u a l i t y p a p e r s a r e p r e s e n t e d at t h i s c o n f e r e n c e . T h e c o n f e r e n c e o r g a n i z i n g c o m -m i t t e e r e c o g n i z e s a n d a c k n o w l e d g e s t h e i r e f f o r t s . S. C h a k r a b a r t i T. K i n o s h i t a H. M a e d a ill

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O F F S H O R E T E C H N O L O G Y S Y M P O S I U M

P R O G R A M C O M M I T T E E

Christian Aage, Technical University of Denmarl<, Lyngby, Denmark

A. V. IVI. Arunachalam, Wiser Associates, Inc., St. J o h n ' s , N e w f o u n d l a n d , Canada Michael M. Bernitsas, University of M i c h i g a n , A n n A r b o r , M i c h i g a n , USA Dario Boote, University of Genoa, Genoa, Italy

J a m e s N. Breklce, Stewart Technology Associates, Houston, Texas, USA

Subrata K. Chakrabarti, Chicago Bridge and Iron Technical Services Co., Plainfield, Illinois, USA R. Cengiz Ertekin, University of Hawaii at Manoa, H o n o l u l u , Hawaii, USA

John S . Leonard, Shell E&P Technology Co., Houston, Texas, USA

T. Kinoshita, University of Tokyo, Tokyo, Japan

Denby G . Morrison, Shell E&P Technology Co., Houston, Texas, USA

Dag Myrhaug, Norwegian University of Science and Technology, T r o n d h e i m , N o r w a y

M . Teresa Pontes, Instituto Nacional de Engenharia e Tecnologia Industrial, Lisbon, Portugal H. Ronald Riggs, University of Hawaii at M a n o a , H o n o l u l u , Hawaii, USA

Thomas E. Schellin, Germanischer Lloyd, H a m b u r g , Germany Paul S . Schofield, W . S. Atkins, Woodcote Grove, Surrey, England Jesper Skourup, Danish Hydraulic Institute, H o r s h o l m , Denmark Krish P. Thiagarajan, Australian Maritime College, Tasmania, Australia

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O F F S H O R E T E C H N O L O G Y S Y M P O S I U M

LIST O F R E V I E W E R S

C. Aage R. Hosoda Y. Matsuda P. C. Smedes A. A d a m s H. Hotta T. Matsui B. Sortland S. Arai

T. Arima

T. Ikebuchi K. Matsumoto C. Stansberg S. Arai

T. Arima _{Y. Ikeda} _{M. Merrifield} _{M . Sterndorff} W. Bao K. Ikegami S. Miyajima H. Sundararaghavan

R. F. Beck Y. Inoue B. M o l i n H. Suzuki H. Bingham Y. Ito D. Morrison K. Suzuki W. Blendermann D. Karunakaran S. Naito S. Tabeta P. Blume M.-Kashiwagi M. Nakamura K. Takagi L. Cavaleri K. Kato S. Okubo T. Takahashi X. Che N. Kato N. Okumura S. Takase G. Clauss S. Kato H. Oliveira-Pires J. Takashima C. D'Mello H. Kawabe K. Otsuka T. Takeuchi A. Dumont M. H. Kim M. Ozaki K. Tanizawa

K. J . Eidsvik T. Kinoshita B. Padmanabhan 1. Tatsumi H . E n d o T. Kiyokawa M. Perlin B. Teng C. Ertekin M. Kobayashi A. Phadke S. Togawa K. A. Fames T. Komuro D. J . Pizer A. W. Troesch J. Falnes H. Konishi H. R. Riggs T. Ura A. Falcao W. Koterayama K. Saito S. W a n g S. Fyfe K. Kudo T. Saito 1. Watanabe A. Ghorbani T. Kumagai A. Sakamoto N. W i l l i a m s G. Giles Y. Kyozuka T. E. Schellin S. Yamaguchi S. Hara B. Lau P. Schofield H. Y a m a m o t o N. Haritos J . Leonard W. E. Schott H. Yokota

J. Heatherington X. Liu T. Shimizu T. W. Yung T. Hiraishi H. Maeda B. C. Simonsen

T. W. Yung

T. Hirayama K. Masuda

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C O N T E N T S

HYDRODYNAMIC F O R C E S

Vortex Flow A r o u n d a Square Cylinder M o v i n g A l o n g a Circular Orbit

Koji Otsuka, Yuji Anada, and Yoshiho Ikeda 1

Wave Forces on Horizontal Members of Marine Structures

Mohammad Saeed Seif and Yoshiyuki Inoue 7

The Irregular Breaking Wave Forces on Vertical Wall

Yu-cheng Li, Da-zhong Liu, Shiao-Jun Su, and

Gui-ping Qi 13

Wave-Induced Soil Response at the Tip of a Breakwater

D. S. Jeng 23

Investigation Into the Dynamics of Two-Part and Multiple T o w Configurations

Susantha D. Ranmuthugala and Brendan J. Anderson 31

Evaluation of Second-Order Forces on an Array of Truncated Cylinders by a Semi-Analytical Method

J. B. Huang and R. Eatock Taylor. 401

Wave Forces on Large A x i s y m m e t r i c Floating Bodies in Weak Current

Tetsuya Matsui and Sang Yeob Lee 39

Steady Drift Forces and Yaw M o m e n t Due to Waves W i t h S l o w Current

Takeshi Kinoshita and Weiguang Bao 47

Scour A r o u n d a Large Vertical Circular Cylinder in Waves

fi. M. Sumer and J. Freds0e 57 Hydrodynamic Loading on a Compliant Cylinder

T. P. Somasundaran, C. P. Vendhan, and

V. G. Idichandy 6 5

An Experimental Study of Hydroelastic Instability of Flexible T o w e d Underwater Cylindrical Structures

K. Sudarsan, S. K. Bhattacharyya, and C. P. Vendhan 73

FLOATIISIG AND MOORED S Y S T E M S

Numerical Analysis of a Floating Breakwater's Performance

K. Murali and J. S. Mani 3 5 3

Full Scale Decay Test of a Moored Tanker: Measurement Procedure of Surge D a m p i n g

Kazuo Nishimoto, José A. P. Aranha, Joao P. J. Matsuura, Fernando Kaster, Hitoxi Namba, and

Isaias Q. Masetti 81

Coupled Analysis of Vessel Motions and M o o r i n g and Riser System D y n a m i c s

Harald Ormberg, Ivar J. Fylling, Kjell Larsen, and

Nils S0dahl 9 1

NFEM Approaches f o r Calculating Fishing Gear as a System of Flexible Lines

Harald Tronstad and Carl M. Larsen I O I

On a Dynamic Positioning System for Offshore Platform

Katsuro Kijima and Yoshitaka Furukawa 109

Dynamic Response Characteristics of a Floating Type of Cylindrical Shell Structure Subjected to Seaquakes

Tadahiro Fukusumi and Kaoru Kusakabe 117

M o o r i n g System Optimization for Vessel in Waves

U. Bulgarelli, A. Carcaterra, M. Landrini, and

^ " 9 " ' 125

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Wave Exciting Forces on IVlultiple Floating Bodies of Semisubmersible Type in Multi-Directional Irregular Waves

Hyo-Jae Jo, Ja-Sam Goo, and Kyung-Tae Kim 135

Dynamics of a Floating Vessel Moored to an Articulated T o w e r

e. Vijily and C. Ganapathy S S I

Turret Requirements and Design for PETROBRAS FPSOs

Déborah M. Mattos, Marina B. Fachetti, and

Arney M. Silva ''45

Preliminary Design of a DICAS M o o r i n g System f o r the Brazilian Campos Basin

Luis 0. Garza-Rios, Michael M. Bernitsas, Kazuo Nishimoto, and

Isaias Q. Masetti 153

Hydraulic Model Tests on a Tugboat Support Type Automatic Installation System for Caissons W i t h Antirolling Boards

hiaruo Yoneyama, Satoru Shiraishi, Kengo Nazato, and

Hidetoshi Takahashi 163

Experimental Study on the Motion Sickness of Human Exposure t o

Simulative Motions of a Floating Ocean Structure in Aspect of Physiological Phenomena

Kenichi Noguchi, Takeshi Goto, and Kazuo Yana 171

The Position-Keeping Performance of a Turret-Moored Tanker Assisted by Dynamic Positioning System

Hyun J. Kim, Yoon S. Won, and Hang S. Choi 179

Experimental Research on the Dynamic Behaviour of M o o r i n g Lines

Liviu I. Crudu, Dan Constantin C. Obreja, and

Liviu Dan D. Stoicescu 187

Comparative Study on the M o t i o n Characteristics of Different Types of Floating Offshore Structures

Kenji Kato, Tetsuya Matsui, and Yongho Rha 195

A u t o m a t e d Optimization of Deepwater Mooring System Design

Ivar J. Fylling 203

Aspects of Non-Linear Three-Dimensional M o o r i n g Line Dynamics

Adrian D. Connaire and J. F. McNamara 211

A Comparative Study of the Conventional and Taut-Leg Mooring Systems

Marcelo R. Martins, Hernani L. Brinati, and

Bernardo L. R. Andrade 221

Organized Transitions and Routes to Chaos in a M o o r e d Ocean Structural S y s t e m

Solomon C. S. Yim, Huan Un, and Oded Gottlieb 2 2 9

The M o t i o n and M o o r i n g Line Loads of a Moored Semi-Submersible in Waves

Xiaohong Chen and Xianglu Huang 235

SHIP DYNAMICS

Nonlinear Predictions of Ship Motions and Wave Loads for Structural A n a l y s i s

l^oe/-M/n Lin, Yung-Sup Shin, Jin-Sug Chung, Sheguang Zhang, and

Nils Salvesen 243

Hydrodynamic Analysis of Non-Wallsided Floating Body by Time-Domain M e t h o d

Duan Wenyang and Dai Yishan

Nonlinear Responses of Multiple Floating Systems

Yoshiyuki Inoue and Mohammad Saeed Seif 2 5 9

A Deterministic and Probabilistic Fatigue Analysis of a Bulk Carrier Structure

Purnendu K. Das, John S. Spencer, Alaa E. Mansour, and

Hsaro-Hsin Chen 417

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Calculation of Stress Resultants and an Estimation o f t h e Strength of Thin Shells Under Follower Loads

Thomas George and Hiroo Okada 269

Material D a m p i n g Property of Mild Steel SS400B

Sadayoshi Chiaki, Yoshiteru Tanaka, Naoki Osawa, and

Kiyoshi Hashimoto 277

A Consideration on the Structural Response Under Sloshing Loads

Katsuya Umemoto, Takao Yoshikawa, Hodaka Shimizu, and

Akio Murakami 261

FIXED O F F S H O R E S T R U C T U R E S

Flow Shielding and Blocking in Steel Platforms W i t h Dense Conductor Arrays

N.-E. Ottesen Hansen and H. Nedergaard 285

Field Measurements of Wave Pressure Distribution Near a Pairof Piles

J. S. Mani

Evaluating Simplified Analysis Approaches for Estimating ttie L^^^ Capacities of Gulf of Mexico Jacket-Type Platforms

James D. Stear and Robert G. Bea 293

Lateral Load Sharing in Piles for Jacket Structures

S. Narasimha Rao and V. G. S. T Ramakrishna 3 0 7

DESIGN AND OPERATION OF OFFSHORE S T R U C T U R E S

The O p t i m u m Design of a Stepped Pipe String With Vibration Absorbers for Mining Manganese Nodules in the Deep Sea, With Consideration for Reducing Its M a x i m u m Axial Stress

Gang Cui and Kazuo Aso 21s

Design Study of a Semisubmersible Floating Produciïon Systeni for Deepwater Field

Tetsuya Yasuda, Christian V. Wolff, and Akitoshi Ando. 3 9 3

Fieldbus and Intelligent Devices for Oil Production Plants

Masahiro Kojima, Teruhiro Oshima, Takashi Ikeda, and Akio Tanabe

The W a r p i n g Torsion Bar Model o f t h e DifferentiaïÏÏuadr'aturë Element Method

Chang-New Chen

Experimental Analysis of Third Order Forces on TLP

Shunji Kato and Bin Teng

Feasibility Study for Deepwater Development Offshore'lndonesia

Jun Mikami and Abdul Wahab 273

Author Index

425

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