A5066008066- Structural Integrity and Reliability Analysis
- Fluid Dynamics Simulations and Interactions
- Structural Load-Bearing Analysis
- Fatigue and fracture mechanics
- Concrete Corrosion and Durability
- Structural Response to Dynamic Loads
- Structural Health Monitoring Techniques
- Ship Hydrodynamics and Maneuverability
- Structural Behavior of Reinforced Concrete
- Engineering Structural Analysis Methods
- Corrosion Behavior and Inhibition
- Metal Forming Simulation Techniques
- Composite Structure Analysis and Optimization
- Wave and Wind Energy Systems
- Mechanical Behavior of Composites
- Probabilistic and Robust Engineering Design
- High-Velocity Impact and Material Behavior
- Geotechnical Engineering and Underground Structures
- Engineering Applied Research
- Mechanical stress and fatigue analysis
- Structural Analysis of Composite Materials
- Structural Engineering and Vibration Analysis
- Numerical methods in engineering
- Structural Analysis and Optimization
- Vibration and Dynamic Analysis
Osaka University
2015-2024
Osaka City University
2016
Hiroshima University
1999-2009
Marymount University
1991-2001
The University of Tokyo
1997
A simple method for estimating the ultimate strength of rectangular plates under combined biaxial and shear loads is proposed. Although numerous studies have been conducted to predict plates, most conventional methods rely on empirical approaches that involve plastic correction elastic buckling or curve fitting through nonlinear finite element analysis (NLFEA) experimental test results. For a more rational design hull structures, it important develop an estimation with theoretical basis...
Abstract In order to clarify and visualize the real state of structural performances ships in operation establish a more optimal, data-driven framework for ship design, construction operation, an industry-academia joint R&D project on digital twin structures (DTSS) was conducted Japan. This paper presents major achievements project. The DTSS aims grasp stress responses over whole structure waves by data assimilation that merges hull monitoring numerical simulation. Three methods, namely,...
Very Large Floating Structure (VLFS) is a unique concept of ocean structures primary because their unprecedented length, displacement cost and associated hydroelastic response. International Ship Offshore Structures Congress (ISSC) had paid attention to the emerging novel technology launched Special Task Committee investigate state art in technology. This paper summarizes activities committee. A brief overview VLFS given first for readers new subject. History, application uniqueness with...
This paper presents a benchmark study on the ultimate limit state analysis of stiffened plate structure subjected to uniaxial compressive loads, initiated and coordinated by ISSC 2022 technical committee III.1-Ultimate Strength. The overall objective is establish predictions buckling collapse strength structures loads. Participants were asked perform for full-scale reference experiment steel utilizing any combination class rules, guidelines, numerical approaches simulation procedures as they...
SUMMARY This paper presents fracture mechanics analysis using the wavelet Galerkin method and extended finite element method. The is a new methodology to solve partial differential equations where scaling/wavelet functions are used as basis functions. In solid/structural analyses, domain divided into equally spaced structured cells scaling periodically placed throughout domain. To improve accuracy, superposed on within region having high stress concentration, such near hole or notch. Thus,...
Dynamic collapse behavior of a ship's hull girder in waves is investigated; post-ultimate strength the focus. Firstly, simulation method proposed. Assuming that plastic hinge formed during girder, whole ship modeled as two rigid bodies connected amidship via nonlinear rotational spring. The behavior, such reduction load carrying capacity due to buckling and yielding, reflected model. Hydrodynamic loads are evaluated by using strip theory account for effect large deformations on loads. A...
The objective of this study is to propose an analysis method ultimate hull girder strength under combined bending and torsion. modelled by a series thin-walled beam elements the average stress–average strain relationship plate stiffened panel axial loads considering effect shear stress implemented in elements. First, torsional moment applied model for whole within elastic range. Then, cross-sections calculated applying Smith's warping stresses. proposed simplified progressive collapse tests...
This paper discusses the influence of rotation neutral axis on residual hull girder strength asymmetrically damaged ships under longitudinal bending. Progressive collapse analysis cross section is performed applying Smith's method for biaxial bending problem. An explicit expression location including its given as a function curvatures. The procedures progressive are presented several loading and constraining conditions. A series bulk carriers double-hull tankers having collision damages at...
AbstractA series of experimental investigations on the post-ultimate strength collapse behaviour a ship's hull girder under whipping loads are presented. It is follow-up study authors based numerical simulations. One important conclusions previous work that given same magnitude loads, extent smaller for with shorter duration. For validation, scale model ratio 1/100, which follows law similitude in ultimate bending as well geometry employed tank tests. The produced by dropping mass object....
Abstract The detection of changes in the dynamic behavior structures is an important issue structural safety assessment. development methods assumes greater significance case offshore platforms because inherent problems are compounded by harsh environment. Here, we describe instrumented physical model for health monitoring jacket-type structure and results tests several different damage scenarios. In a comparative investigation two methods, discuss difficulties implementing techniques...