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Development of Method of Analysis of Sound Propagation Based on Parabolic Equation Method
Sound Propagation Parabolic Equation Method
2009/8/19
Recently, we developed program of sound propagation in ocean water using the parabolic equation (PE) method based on wave theory. This method accurately analyzed long-range sound propagation in deep w...
Free Surface Potential Flow around Multi-Hulls in Shallow Water Using a Potential Based Panel Method
Wave Making Resistance Lifting Body Shallow Water Free Surface Boundary Element Method Sinkage and Trim
2009/5/18
The present paper investigates the shallow water effect on the hydrodynamic characteristics of lifting body such as wave resistance, sinkage and trim using a potential based boundary element method. T...
Study on Evaluation of Fatigue Strength Based on Modified Miner’s Rule
Wave-Induced Load Fatigue Damage Modified Miner’s Rule Correlation Coefficient Reliability Analysis
2009/5/12
In case of evaluating fatigue strength the fatigue damage based on modified Miner’s rule is often used. This fatigue damage is simply calculated if the distribution of stress response is assumed to ob...
Wave Making Resistance of Ships in Shallow Water Based on Second Order Free Surface Condition with Sinkage and Trim Effects
Resistance Boundary Element Method Shallow Water Morino Perturbation Method Free-Surface Flow
2009/5/12
The problem of free surface potential flow around a ship in shallow water is subjected to linearized form of free surface condition and kinematic conditions on the body and bottom surface. The solutio...
Prediction of Maneuvering Hydrodynamic Forces and the Steering Motions Based on the Oblique Hydrodynamic Forces
Oblique Hydrodynamic Forces a Component-type Mathematical Model Hydrodynamic Characteristics Estimation of Hydrodynamic Forces Maneuvering Motion
2009/5/12
The authors had developed a component-type mathematical model of hydrodynamic forces acting on a ship hull in steering motion that is deduced from the simplified vortex model. This mathematical model ...
A Study of Thermal Stress Based on Metabolic and Radiation Heat for Improvement of Working Environment in Exposed Spaces(Part 1 Aspects of summer heat and storage of body heat)
Thermal Stress Metabolic Heat Radiation Heat Exposed Spaces
2009/4/30
As a recent tendency to take high interest in the environmental problem, the time has come to reconsider the present working conditions. The thermal environment at an exposed working place in a hot se...
Ship-Maneuvering Control System Design Based on the Root-Locus Technique
Root-Locus Technique Ship-Maneuvering PID
2009/4/29
The PID control theory is very often used in practice in the field of shipbuilding; it is not an exaggeration to say that the use of other control theories is rare. Even though the theory possesses a ...
An Automatic Berthing Control System Design Which Is Based on Learning Feed-Forward Control
Automatic Berthing Control System Design Learning Feed-Forward Control
2009/4/29
In previous papers 1, 2, 3, 4, 5), the author demonstrated the application of the learning feed-forward control (LFFC) system for multivariable systems and the effectiveness of the LFFC system by on-b...
A Study of Thermal Stress Based on Metabolic and Radiation Heat for Improvement of Working Environment in Exposed Spaces
Thermal Stress Metabolic Radiation Heat Working Environment Exposed Spaces
2009/4/29
In a hot season with skylight, the storage of body heat during an operation at an exposed working place causes the deteriorating work efficiency and the physiological defect. Therefore, it is necessa...
A Design of the Liner Ship based on the Logistic Trend Prediction between China and Japan
Liner Ship Logistic Trend Prediction China and Japan
2009/4/29
Recently the amount of trade between China and Japan has been increasing. The trade value has grown by about 920% from 18.2 billion dollar in 1990 to 168 billion dollar in 2004. This paper presents a...
Constraint Loss Correction for Assessment of Brittle Fracture Initiation in Residual Stress Field Based on the Weibull Stress Criterion
Constraint Loss Correction Brittle Fracture Initiation Residual Stress Field Weibull Stress Criterion
2009/4/24
This paper studies the method for estimating the welding residual stress effect on brittle fracture of structural steel based on the Weibull stress criterion. Using wide plate (WP) specimens with and ...
Development and Demonstration of CAD/CFD/Optimizer Integrated Simulation-Based Design Framework by Using High-Fidelity Viscous Free-Surface RaNS Equation Solver
CAD/CFD/Optimizer Integrated Simulation-Based Design Framework High-Fidelity Viscous Free-Surface RaNS Equation Solver
2009/4/23
This paper, for the first time, describes development and demonstration of a CAD/CFD/optimizer-integrated simulation-based design (SBD) framework by introducing an advanced CAD system direct control a...
Development of Time Domain VIV Response Analysis Method Based on Measured VIV Hydrodynamic Force
Time Domain VIV Response Analysis Method Measured VIV Hydrodynamic Force
2009/4/21
A time domain analysis method of Vortex Induced Vibration (VIV) was developed for risers and towing pipes with curvature. Risers are increasingly installed in deepwater and catenary shape is used util...
Method for Predicting CTOD Fracture Toughness Transition Temperature from Charpy Impact Test Based on Fracture Mechanics Analysis
Predicting CTOD Fracture Toughness Transition Temperature Charpy Impact Test Fracture Mechanics Analysis
2009/4/7
This paper presents a method for predicting the CTOD fracture toughness transition temperature TiCTOD for structural steels from Charpy impact toughness TiCharpy. TiCTOD and TiCharpy are defined as th...
Method for estimation of fracture toughness from machined-notch specimen based on the Weibull stress criterion
Kenji Sakano Daisuke Watanabe
2009/3/30
A method for the estimation of the CTOD fracture toughness δc from toughness results of bend specimens with a machined notch has been studied. The Weibull stress criterion is adopted as a brittle frac...