| Research |
Period |
Researcher(s) |
Overview |
| Plan |
2002 |
| 1. The buckling / plastic collapse of structural
material caused by repeated tension, compression and shearing loads |
5 |
5 |
M. Fujikubo D. Yanagihara |
Research on buckling / plastic collapse of panels and reinforcing
plates caused by tension, compression and shearing loads inside is conducted.
A dynamic model to simplify calculation is established. |
| 2. Structural collapse caused by ocean waves and
performing a safety assessment of large floating structures |
3 |
2 |
M. Fujikubo S. Okazawa D. Yanagihara |
Through experiments and analysis, the pattern of structural
collapse of the large floating structures caused by ocean waves is explained.
Using a lifecycle cost-minimizing concept that considers damage risk, target safety
levels are established. |
| 3. Construction of the ultimate strength analysis
system of large template bone structural systems by idealizing a structural element
method |
3 |
3 |
M. Fujikubo S. Okazawa D. Yanagihara |
A new idealized structure element that can accurately recreate
the buckling behavior of the partial and whole continual warp-proof panel is developed.
The ultimate strength analysis system for hulls and large floating structures
is developed. |
| 4. Plastic instability analysis of tensile steel
with the Eulerian Hydrocode |
3 |
1 |
S. Okazawa M. Fujikubo |
A finite element analysis code is developed that makes Hydrocode
developed by the Eulerian notation possible. Using the analysis code, plastic
instability analysis of constriction, shear zone and rupture of tensile steel
is conducted. |
| 5. Buckling and breaking strength of GFRP-made
panels |
3 |
3 |
D. Yanagihara M. Fujikubo |
Regarding demolition by delamination of the GFRP-made panel
and stiffener panel after buckling, conditions of cause and development of delamination,
and an evaluation system of ultimate bearing force are clarified. |
| 6. Developing a new propeller for extreme conditions |
4 |
4 |
Y. Doi |
Focusing on fin motion and using numerical simulation, the
mechanism of how ripple deformation generates propulsion is clarified. The possibility
of developing a new propeller is examined. |
| 7. Coastal erosion by the wake of a ship |
3 |
2 |
Y. Doi H. Rikuda |
The non-linear characteristics of wake in restricted waters,
and the mechanism of coastal erosion by the ship's wake are clarified. |
| 8. Motion characteristics and fluid dynamics of
a new oyster raft |
3 |
2 |
K. Kose Y. Doi H. Rikuda |
Regarding new oyster rafts whose floating body is divided
into surface and underwater parts, the characteristics of motion and fluid dynamics
of the raft are clarified. The mechanism of demolition of the raft and drop of
oysters from the raft in high waves is clarified. |
| 9. Developing a simulation model for the dynamic
analysis of benthic organisms inhabiting beaches and tidal flats |
3 |
2 |
H. Rikuta Y. Doi |
Based on fieldwork, the relationship between water property
flux in the beach and tidal flats and the level of biodiversity and activity is
investigated. A simulation to project activity of benthic organisms is developed. |
| 10. Developing an ocean and atmospheric environment
simulation model for the Setouchi area |
2 |
1 |
H. Rikuta Y. Doi |
High-resolution topography of surface and seabed are analyzed.
A simulation to project the environment using a local weather model in combination
with an oceanographic model is developed. |
| 11. Developing a unified solution in the gas-liquid-solid
complex |
3 |
1 |
H. Rikuta Y. Doi |
A numerical simulation technique that can handle gas, liquid
and solids in a common way is developed. Whether it can be applied to complex
fluid analysis is reviewed. |
| 12. International logistics |
3 |
1 |
K. Mori T. Yamada |
Targeting East Asian region, the current state of freight
transport between Japan and East Asia is examined. By assessing transport efficiency
and environmental burden, research on the optimum transport system is conducted. |
| 13. Technology transfer |
3 |
1 |
K. Mori |
Moving the operation bases of production and waste treatment
overseas is one of the ultimate forms of logistics. A survey on technology transfer
concerning overseas operation bases is conducted. |
| 14. The propeller for an aerogenerator |
4 |
1 |
K. Mori H. Iwashita |
A new model of propeller for the smalldistributed aerogenerator
is developed. |
| 15. An urban distribution system |
2 |
2 |
K. Mori T. Yamada |
Urban transport system evaluation techniques are developed
that take into account analysis techniques of urban distribution and transportation,
and logistical activity. Feasible urban logistics plans are established. |
| 16. Stress revaluation in hull panel structure |
3 |
1 |
M. Kitamura K. Hamada M. Yamamoto |
Even with the extensive finite element method, it is difficult
to obtain sufficient accuracy for complex structures. This research includes improving
the accuracy of panel structure analysis by using the stress reevaluation method,
known as the SPR (Superconvergent Patch Recovery) Method. |
| 17. The optimum design for vessel structure |
4 |
3 |
M. Kitamura K. Hamada M. Yamamoto |
This research applies genetic algorithms, which model the
law of survival of the fittest, into optimum design of vessel structure. To evaluate
constraints such as stress and displacement, a more flexible design system using
the finite element method is researched and established. |
| 18. The characteristics of steel and aluminum
alloy materials that undergo repetitive and extensive deformation, and the crack
strength of welded structure materials. |
3 |
3 |
M. Yamamoto M. Kitamura |
The mechanical properties and the stress-deformation link
when generic rolled steel and aluminum alloy materials used for large welded structure
are under repetitive and extensive plastic strain are quantitatively clarify.
The crack strength of welded structure materials that undergo repetitive and extensive
deformation is also clarified. |
| 19. Developing a method to analyze temperature
and plastic deformation. Establishing an evaluation system for the occurrence
of hot cracks. |
3 |
1 |
M. Yamamoto M. Kitamura K. Hamada |
The range of application of laser welding is expected to expand.
Through experiments and the finite element method, this research will clarify
the occurrence of hot cracks of laser-welded spots. Safety and reliability evaluation
standards for laser-welded spots in severe environments are also established. |
| 20. An expression method used in shipbuilding
CIM |
5 |
5 |
K. Hamada |
The structure and its expression method used in shipbuilding
CIM considering scalability, reusability and elicitation of information are examined. |
| 21. A joint design support system |
4 |
2 |
K. Hamada M. Kitamura M. Yamamoto |
The design and production support system that enables comprehensive
management of decision-making flow on welding and joint design is examined. A
prototype system that provides adequate welding/joint information for each phase
of design and production flow by repeating the generation and evaluation of welding/joint
design is developed. |
