Abstract: the present, China Institute of the shipyards and ship design commonly used CADDS5 and TRIBON software features and can be used in the field were discussed, and in practice the use of their advantages and disadvantages are reviewed, pointing out toward the ship design to make multi-platform, multi-unit, remote collaborative virtual digital design direction, design more effective conservation of resources, improve design accuracy and design efficiency and shorten the design cycle, it should be realized between the two software data to a shared Oracle or Step .
Key words: CADDS5; TRIBON; ship design
Production through the use of computer-aided design, ship production company shortened design cycle, improve design accuracy, to ship the labor-intensive work to knowledge-intensive work of transformation. In the domestic shipbuilding industry currently popular design software company TRIBON KCS Sweden and made in China POPS. Some large state-owned enterprises and research institutes are the PTC's CADDS5 software introduced to the shipbuilding industry to have achieved good results.
1 on the basic assessment of CADDS5 software
CADDS5 software is the U.S. PTC (Parameter Technology Cooperation) products. It is a universal three-dimensional mechanical design software, with full-featured, true three-dimensional modeling, database, opening up a number of advantages. The software modeling means abundant, especially in curves, surfaces fully functional. Use a very broad, almost mechanical design and analysis related to all fields to meet the various needs of users, such as surface modeling, piping and sampling, engineering design, cable laying, rice money, CNC machining, mold design, kinematic analysis, strength analysis, heat flow field analysis. Their widespread application aircraft, automobile, chemical, power, shipping and large industries such as Hydraulic 3D digitalization principle, production design and processing projects, especially in Korea and some French shipbuilding firm that software of more universal application.
Since the initial development of the software is not intended for ship design, shipbuilding, therefore compared to proprietary software in terms of TRIBON, CADDS5 specialized in shipbuilding capabilities in this field is relatively weak. However, it is itself CVMAC development platform, as well as its underlying database is based on the Oracle database features, so much development left to the user room. In some ways, necessary for its development, will make the software more in line with China's shipbuilding enterprises in production design and process standards used to make up for the software professional in the field of shipbuilding disadvantage of poor. For example, 611 to POPS software and CADDS5 integration, direct extraction of the Oracle database CADDS5 tube design data, generating a small tube ticket plan, the shipyard management to meet our processing needs.
2 on the basic assessment of TRIBON software
KCS TRIBON software is launched in Sweden a spear ship design software design software This software is modular, each module by shipbuilding experts and software designers to develop the. It includes the module production equipment, hull, pipes, equipment, base, air duct, cable, iron habitat equipment, interior and so on. Therefore, in terms of shipbuilding industry, the software more "say", but in fact such a corresponding relationship between the limit surface to further expand its use. It all menus and features are designed around the ship, virtually no other function. Therefore, it's advantage is specialized and targeted, involved in shipbuilding design of the professional, the system more compact. Its disadvantage is the narrow professional applications, functional limitations of large, poor ability to solve particular problems, and poor database open. As the system design are mostly shipbuilding expert, so the entire system topology of three-dimensional graphics modeling ability, a number of specific modeling problem of topological graph can not be well resolved.
3 from the shipbuilding industry to see the two software
Software can not do the absolute comparison between, a software good or bad than the other software, such evaluation is not objective is not scientific. Generally speaking, each software has its own advantages and features, of course, has its weak and inadequate. By CADDS5 and TRIBON two software applications, the feeling has its own unique advantages.
CADDS5 software is a common design platform, a large number of advanced computer-aided technology is introduced, therefore, it represents the current international trend of CAD software, versatility and professionalism is low, but it can address the special problems of the special product form. The software database open, and has a very good development platform, the modeling method is complete, the graphic file is independent and is based on the path to management. Therefore, its flexibility for the management of images, you can always add a graphics file in the project, can be Web-based Collaborative Design, which is its advantage. It also disadvantages mentioned above, less specialized shipbuilding. For instance, the hull module generates two-dimensional map is based on general mechanical drawing standards, drawing standards do not meet the hull; tube of small notes to go through plug-in processing. On such issues can be resolved through the secondary development.
TRIBON software is a versatile ship design to meet the design platform, its capabilities to meet the shipyard production process. However, their boats loaded module for device modeling, using the voxel construction method, therefore, poor equipment, realistic style. Also, because of their project managed by the document, the user at any time to the project Buneng Tianjiatuxing file, Yin Ci, more Kunnan remote collaboration, which Duiyuchuanbo Jianzaozhezhong more 鍝佺 of small batch production Fang Shi terms, do not seem particularly flexible even restricted the progress of the shipyard production design.
4 Setting out from the pipe system to see the two software
TRIBON software from version 4.0 to the computer workstation version of the M1, and medium-sized shipyard in China has been widely used as an aid for production design to improve the production efficiency. Its hull module and control system module integrated CAD / CAM capabilities. Hull module can be started on the design and conduct nesting design, CNC cutting machine for the next send material processing; tube tube processing module can extract information directly sent to CNC pipe bending machine manufacturer. Design module is concerned on the tube. As the pipe system is setting out a comprehensive project, it can not advance alone, must wait hull, equipment, cables, duct, base, etc. can be carried out almost complete, and in the design and also meet the various owners design change requests, and this inevitably resulted in the pipe system when laying a lot of changes. Is a two-dimensional semi-TRIBON software module in the pipe system in a quarter-screen all the lines we see are two-dimensional line segment, the pipeline changes the shape of space, and rotate through the two points in the adjustment screen will be able to achieve requirements. The illumination module can display the true three-dimensional tube shape, which provides designers with an intuitive tool for visual inspection. While the interference checking function for designers to further qualitative examination provided the tools to intervene, but did not provide quantitative analysis of interference inspection tools. For example, it can not measure the specified minimum distance between the models can not give the value of mutual interference pipe. Particularly worth noting that, TRIBON M1's new icon-based command allows designers to more easily study the X-ray features than the workstation version to be much stronger. It added a dynamic new roaming feature that can help designers to visit the cabin layout of the situation in the tube, allows designers to carry out a more reasonable design of the pipe laying. Meanwhile, the new provision of state in the X-ray tube function allows editing more intuitive design. But the PC version TRIBON introduced, it required the minimum memory configuration for the 512M, loaded the boat in the shipyard design, a segmented data are often more than 512M, therefore, the design of the boat loading often occur throughout the sub-data transfer people, the easy to cause system crashes phenomenon.
CADDS5 software in China although the just introduced into a ship design to, but its parameter (Parameter) and non-parametric (Explicit) design module for its more accurate to meet modern industrial production of "virtualization" design has been aroused the attention of ship designers. Strictly speaking, during the design of a ship, if the three-dimensional model was accurate, realistic, setting out the error rate control system can be greatly reduced, and that can be achieved without margin control system processing. This will increase productivity, reduce costs, shorten design and production cycle is critical. Because software is a true three-dimensional CADDS5 software, all of its models, including three-dimensional drawing of the auxiliary lines are, therefore, available when making pipe lofting three-dimensional coordinate system (relative coordinates, absolute coordinates) to control the shape of space pipeline, the pipeline changes when the space by changing the coordinates for the location and angle. But, after all, not special shipbuilding CADDS5 software, the changes of its pipeline system as TRIBON idea and means easy and fast. CADDS5 laying pipe system with intelligent features. For example, if the pipe system must complete the establishment of the Annex library, somewhere in the pipeline to join the adjustable size of the head, it can automatically adjustable, such as small diameter downstream end of the annex, including flanges, valves automatically adjust to the small diameter Duanxiang match, and can freely move in the pipeline attachment in TRIBON of these features was not available.
Another feature of CADDS5 Software is a powerful virtualization product design features that EPD CONNECT (Electrical ProductionDesign). Before you start EPD CONNECT first model (hull, pipes, electricity, wind, etc.) made assembly tree, and then start the mediator. At this time, three-dimensional model can be transferred to multi-angle of view, you can also do any rib is located at the split, and split some remove, easy to observe the situation in the cabin. In addition, it can calculate the space between any two models, the minimum distance.
The collision checking can be divided into static and dynamic collision checking Collision checking, static collision check can be conducted on the specified model checking, and the results reported by different colors to the designer. Dynamic collision checking is a space through a given path, the model of a particular device or other moving along this path, looking at it with the surrounding three-dimensional model of the impact of other conditions, and displayed the report to the designer. These are designers the means to check the collision, but also provide a basis for the design of dynamic interference detection results, work out the best route to install, and maintenance of hoisting equipment, laying the most economical way. For example, there may only need to cut a piece of steel plate, you can repair the equipment will need to secure hanging out and not run into other things, this maintenance program development and reduce maintenance costs is a practical significance.
5 Conclusion and Outlook
CADDS5 TRIBON software and digital design software for the ship to provide an effective platform, making the ship's design in a unified digital platform. However, due to data conversion interface between the two software is not perfect, the data between the two resources can not be fully shared. Meanwhile, the two software need to be their weakness also an upgrade in the future be addressed to achieve the software data to Oracle or Step sharing, so that ship design toward multi-platform, multi-unit, remote collaborative virtual digital design direction development of more effective energy conservation design resources, improve design accuracy and design efficiency and shorten the design cycle.
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