Research |
Period |
Researcher(s) |
Outline |
Plan |
2002 |
1. Development of simulation performance of ships
in sea conditions |
3 |
1 |
M. Miyata S. Orihara |
Ship performance at sea is investigated during the whole life
of the ship by a simulation technique using CFD to design ships securing safety
and economy. |
2. Development of an optimization technique for
an automatic ship hull design system |
3 |
1 |
M. Miyata |
Ship design and drawings are still complicated and using highly
sophisticated techniques to have competitive power in the marine industry. In
addition to investigating CAD and CFD, the combination of modeling and optimization
of an intelligence system is conducted to solve the problem. |
3. Development of a dynamic simulation model on
the transport flow of commodities |
3 |
1 |
M. Miyata |
Road, harbor and ship facilities for the transport of commodities
in Japan are customarily produced as transport means without intention to be scientifically
logical. The productivity of the domestic transport of Japan is 65% of that of
USA. Simulation techniques of the network and flow in the transportation system
are formulated in a discrete form. Then, the flow network and hardware of the
transportation system are optimized. |
4. Ship design and its operation in the domestic
transport system of commodities |
2 |
2 |
H.Yamato S. Shirayama H. Masuda I. Watanabe H.
Andoh Y. Yamauti |
Mathematical programming and simulation based on evaluation
of the domestic maritime line will pertain to designing domestic routes, ships,
types and operation. |
5. Basic research on the application of a visualization
method for a design system |
2 |
2 |
S. Shirayama H. Andoh H. Masuda H. Yamato I. Watanabe
K. Saitoh |
Integration of design of and analytical systems on structure
and fluid elements is very important in the ship production process. However,
integration is seldom used in the process in spite of the necessity of applying
intelligent visualized information. How to feedback the results of intelligent
information to the design system remains a problem. |
6. Basic research on the design system of a the
network |
2 |
2 |
H.Yamato S. Shirayama H. Andoh H. Masuda |
Basic CAD architecture applied to shipbuilding networks that
mainly consists of cooperative work is discussed. |
7. Total safety assessment of ships |
5 |
4 |
H. Yamato |
It is necessary to establish an assessment system with minimum
cost to maintain and improve safety and the environmental level of ships. Therefore,
construction of a safety assessment system, construction and consolidation of
a database system, and utilization of accident information will be undertaken.
The results of FSA (Formal Safety Assessment) in Japan will be recommended to
IMO at an appropriate time. |
8. Application of wearable computers in shipyards |
2 |
2 |
H. Yamato H. Masuda S. Shirayama S. Enomoto N.
Mishida |
The combination of a wearable computer and communication system
will be constructed. Now, a measuring and monitoring system will be constructed. |
9. Maritime transportation in Indonesia |
2 |
2 |
H.Yamato Suprayogi |
A design method for a maritime transportation network in Indonesia
is discussed using a mathematical model method, in particular, by integral numbers
and simulation. This work is in cooperation with Hiroshima University and part
of a fund from the Japan Society for the Promotion of Science. |
10. The boundary streamline method |
2 |
2 |
S. Shirayama Suprayogi |
A boundary streamline method is good for visual representation
and strongly correlates with separation the flow at the stern of a ship and generating
a vortex in the wake. It provides useful information on improving ship hull design.
Therefore, it is necessary to show boundary streamline with accuracy. The CFD
calculation indicates the problem of different patterns with the available visual
software. This study performs a simulation analysis, and a high accurate boundary
streamline method will be developed. |
11. The CAD system for the specification and installation
of shipbuilding design with built-in intelligence |
2 |
1 |
H.Yamato H. Masuda S. Shirayama H. Andoh M. Satoh
T. Karasawa |
In ship design in the initial stage, it is usual to use a
handbook or a design manual as stored data. This study develops this function
for the future by using computers as an effective way to store digital data. |
12. Construction of a bridge work assistant system
by a dynamic work flow management system |
2 |
1 |
H. Andoh |
In ship navigation, it is necessary to obtain overall information
of physical objects. Then, to control the ship correctly, a system considering
individual work as well as team-work should be constructed. This study adds to
the navigation information gained by ARPA and ECDIS, performs information processing
of conversation between crew members crews and analyses crew work position at
the bridge to develop a work monitoring technique by computer. Objects and resources
are evaluated based on the information acquired. Through the analysis, a work
assistant system for ship navigation is developed. |
13. Development of a numerical estimation method
for floe (floating ice) movement |
3 |
3 |
H. Yamaguti |
A flow of floes is simulated numerically with a new floe model
formulated with discrete-type characteristics. The simulation technique can be
applied to floe movement from a global scale to a small, regional scale with suitable
accuracy and calculation time. The combination effect of floe and sea-water is
also calculated. |
14. Development and application of GIS (Geographic
Information System) for polar environment engineering |
4 |
4 |
H. Yamaguti |
GIS (Geographic Information System) for polar environment
engineering is developed to input data into the system. Floe data monitored by
artificial satellite can estimate the floe movement by a computer prediction program
with a linkage of software already developed. The change and assessment system
of the environmental effect on the polar region is constructed for prediction. |
15. Development of a numerical model for unsteady
cavitation flow |
2 |
1 |
T. Kawamura |
A numerical model of unsteady cavitation flow model is developed
for a propeller and a two-dimensional blade. |
16. Water treatment by water jet cavitation |
4 |
3 |
T. Kawamura |
Super sonic induced by cavitation breaks down harmful organic
compounds such as PCB into harmless elements in water. This study applies collapsing
energy of cavitation using water jet to discompose organic material when a bubble
in the jet cavitation collapses. The generation mechanism of shock pressure wave
is investigated when water is jetted. |
17. Application of a microscopic approach to the
destruction mechanism |
5 |
1 |
H. Yoshinari S. Kaneda A. Morita |
To clarify the mechanism of ductile, tensile and fatigue destruction,
this study investigates the behavior of destruction to a micro scale smaller than
crystal scale. |
18. Assessment of destruction strength for welded
steel structures |
3 |
1 |
H. Yoshinari S. Kaneda |
The safety assessment of destruction on welded steel structures
with flaws is evaluated experimentally and analytically. Also, it is discussed
in view of reliability engineering. |
19. The stop mechanism of high speed brittle crack
propagation |
3 |
2 |
H. Yshinari S. Kaneda |
The stop mechanism model of brittle crack propagation is constructed
on a crystal scale level based on local stress theory. The stop behavior of crack
propagation is performed, especially for steel structures. |
20. Development technique for a large-scale model |
5 |
5 |
T. Nomoto |
The SODAS system was developed based on results that were
used for system development for CIM in shipbuilding, and has been performed for
the past ten years. Reviewing the process, a development technique of for large-scale
systems is discussed in general. This study performs a conversion from the development
of a shipbuilding system to study for system development. |
21. Application of a product model |
5 |
5 |
T. Nomoto |
It is important to construct a model of production in system
development for CIM in shipbuilding. After constructing a product model, it is
necessary to use the model effectively. Integration of FEM analysis, CAE system
and the simulation system have been discussed. A system to improve the accuracy
of product and safety information of factory is investigated to integrate the
systems. |
22. Information acquisition of design and production
for shipbuilding CIM |
5 |
4 |
T. Nomoto |
Modeling in shipbuilding has been performed to apply CIM to
shipbuilding by integrating CAD and CAM. The system model from design to the manufacturing
stage in the shipbuilding industry in general was developed in view of the product
model and its function. Reviewing this, the system now needs to be reconsidered
considering reconstructing process information. |
23. Divided command design policy (top down design
policy) in the production system |
5 |
2 |
K. Aoyama |
System design and the construction of a product and intricate
systems that are composed of many elements are investigated. The fundamental concept
of design is to decompose design policy that is an expansion of top down design.
Design in general starts from a conceptual design or a basic design then gradually
progresses to a detailed product, giving concrete parts information. This design
flow does not admit the idea that all information of each component and manufacturing
stage of the completed product can be decomposed. The design flow of each stage
is considered as added suitable information and necessary and sufficient conditions
are decided as the need arises. Integrating information among elements will improve
the design of the system and make it more sophisticated. |
24. Construction of top down design tool aiming
to assist an artificial satellite in the initial stage |
5 |
2 |
K. Aoyama |
As the performance and cost of a product are almost always
determined in initial stage of design, overall judgement is required from a number
of points of view. To assist design in the initial stage, it is necessary to have
an integrated environment. An information model or target design parts should
be presented as a substance and an attribute. The design assistant system and
its environment are proposed through an information model visually combined by
the designer. The function of a large-scale artificial satellite system is closely
connected with the substance of the satellite itself, the launching rocket and
the ground control system. The top down design system in the design of a satellite
with a process manager who can assist the design on a trial and error basis in
design and analysis is applied in the initial design stage. |
25. Management of interface information in module
design |
5 |
3 |
K. Aoyama |
Module design is focused on as the tendency from mass production
with few kinds to small-scale production with many kinds, and the life cycle of
a product is considered. In module design, in addition to the combination of the
module to manufacture a product, it is important to consider interface connection
between each module. However, there is no design assist system to control the
connection of interfaces in an integrated manner at present. This study concentrates
on the potential of a real module design and a computer assisted system. |
26. Construction of a knowledge management system
in safety information |
3 |
1 |
K. Aoyama |
About 2000 workmen die a year through accident in Japan. Safety
consciousness and risk assessment is important due to the global establishment
of ISO12100. As it is important to secure safety at the production site especially
in the manufacturing and construction industries, there is no trial to investigate
the work safety in advance using a computer system. Targeting large-scale products
such as ships a steel structures, the basic concept of an assistant system with
appropriate measures for risk and a prototype system constructed by the author
are investigated. The system defined as assisted design is also developed, effectively
utilizing combined information aiming at risk assessment and work safety. |
27. A factory planning assistant system at each
stage and factory simulation |
3 |
3 |
K. Aoyama |
To realize productive activity effectively, it is necessary
to obtain planning information on production. Howevergenerating planning information
should focus on various products and consider restriction on manufacturing flow
in the factory. Planning information also requires skill. In the initial stage
of design, it is very important to draw up a suitable, realizable plan. |
28. Systematization of inherent technical skill
in production |
3 |
1 |
S. Taketi |
In the recent manufacturing industry, there is a serious problem
of skill transmission. This study clarifies the metrics of manufacture (a mathematical
model of economical and analytical estimation referring to productivity, determination
of quality assurance and acquisition of productive data in a manufacturing system).
In addition, best practice by skillful technicians is clarified, and there is
an overview of a new manufacturing system different from conventional methods.
Then, the systematization of skill transmission is established. |
29. Ocean storage of carbon dioxide |
5 |
1 |
H. Suzuki K. Enomoto |
To curb global warming, the possible separation and collection
techniques for carbon dioxide, a global warming gas, is discussed. A proof experiment
is planned. In the experiment, the design of a deep sea piping system to lead
carbon dioxide from an experimental ship to the sea bottom targets technical problems
of strength, behavior and installation. |
30. Basic research on a damage diagnosis system
for large structures |
3 |
2 |
H. Suzuki N. Oka |
Maintaining the integrity of large structure systems, enormous
efforts are concentrated on inspecting damage in every part of a structure. Basic
research is conducted on the ejection of elastic waves into the structure material
that makes it possible to detect the scale of damage and the location through
the transmission behavior of elastic waves. |
31. Analysis of shaft flexure behavior and control
of a deep sea riser system |
4 |
1 |
H. Suzuki K. Enomoto |
In Japan, there is a project to use a deep sea digging technique
extending down to 4,000 m that will be the deepest world record. A riser utilized
in the digging system relatively weakens the strength of a structure. This is
because of shaft and flexure vibration. This is a serious problem in riser design.
Analysis and control methods of this system are discussed. |
32. The optimized structure of the semi submersible
mega float |
3 |
1 |
H. Suzuki N. Oka |
Response characteristics of a submersible mega float are basically
clear and performance has confirmed even under rough sea conditions. However,
the optimization of the structure has not been discussed. This research discusses
form of the structure, the size of components and system installation in view
of floating shape asymmetry or disproportion. |
33. Floating wind farms |
3 |
1 |
H. Suzuki N. Oka |
As wind conditions are stable at sea, the generation of electricity
by floating wind farms looks very promising. A floating wind farm is inexpensive
to transport and install. On the other hand, the expense of a floating system
is a disadvantage. The application of SPAR to an effective float form and ideas
for optimization are discussed. |
34. Exploitation of methane hydrate |
2 |
1 |
H. Suzuki K. Enomoto |
Promised sea areas for exploiting methane hydrate are located
in the south sea trough in the Pacific Ocean. As the sea of the site is rough
because it is a typhoon route and due to the flow effect of the Kuroshio sea current,
strict regulation is required in the design of the system. The endothermic reaction
of methane hydrate and that its reaction is fundamentally ineffective are discussed.
The system should be small and lightweight, with good cost performance and high
efficiency. |