In-depth | CAD/CAM
Colin Sear and Paul Moscrop (BAE Systems
Maritime Submarines) explained that BAESS is the design/technical authority for the 7 Astute Class submarines and the industry lead for the design of a new generation of submarines to carry the UK’s nuclear deterrent. This Trident successor is to be on patrol by 2028 with a planned date for starting construction of 2016. Te concept stage is complete and in May BAE Systems was awarded the design contract based on the selected option. FORAN’s role in this project is to integrate the design process with Product Lifecycle Management (PLM) soſtware, improve CAD/Visualisation, graphical data exchange and electrical cable management (auto-routeing of electrics is being investigated). Tere will be some 1.5 million components and some 2,000 users, in various locations, will need access to the data. Rakesh Roy of the Vedam Design and
Technology Consultancy, India, noted that due to the cyclical nature of ship design, more design work is being contracted out by shipyards. One project may involve several agencies and each agency may interact with several projects. Interacting with different shipyards and suppliers with different internal systems requires an Integrated Document Management Tool (IDMT) and Vedam have created this as a simplified version of PLM. IDMT is an intelligent tool to handle documents, data, information, notes and revisions, operating smoothly across the involved parties and integrated with the design tools used without burdening the design team. Te FORAN 3D model will provide the base line design with production drawings as an output. Carlos Gonzalez (SENER) said V70R2.0
is to include a new module FNEST including multi windows, automatic cutting sequence and fully customisable labelling. Te new version removes all the previous limits on maximum number of parts, bridges, text and cutting path length. Whilst the initial release will cover plate nesting only, later versions will have profile, panel and strip nesting. Norberto Fiorentino (SENER- Argentina)
described how FORAN had been used in the repair (following a major fire in 2006/7) and modernisation of the icebreaker, ARA Almirante Irizar. Tis ship is nearly 15,000 tonnes displacement with a length overall of nearly 120m. It is an icon for the Argentinian people. Laser scanning of the existing ship was used with results exported to FORAN using a specially developed tool, keeping survey
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time to a minimum. Te scanning provided the ship configuration with positions of pipes and cables etc. Other details on material and so on were input. Te removal of damaged material and the rebuilding was carried out afloat. Tis required constant monitoring of strength and stability. Virginia Marcos (SENER) explained the new
features being built into FCABLE. Basically these are visual assistance, using colour coding, to aid cable routeing, virtual routeing to speed up the routeing process and automation of calculations on electrical balance and the sizing of generators. Sergey Tolstoguzov (Design Group Ricochet,
St. Petersburg) said that his company had completed 17 projects using FORAN since 2002. V70R1.0 is used on new work. He described the design of a replica of Peter the Great’s battleship Goto Predestinatzia (1702) being built as a museum ship. LOA is 36m and beam 9.5m. Te ship is to be classed by the Russian River
Registry and to meet modern requirements the hull will be in steel (superstructure and masts
but will be incorporated later. Reports can be in various formats including EXCEL and WORD. Antonio Valderrama (SENER) said that a
new module FSYSD, available in a few months, will replace three older modules related to diagrams. FSYSD is completely new, working in a new 2D environment and with an intuitive use interface, but providing easy transition from existing legacy data. It will provide bi-directional information flow between 2D diagrams and the 3D model and be integrated with FDEFIN and FCABLE. Anwarul Azeem (Drydocks World – Dubai)
described how his company had customised FORAN’s FREPORT to create a series of reports to meet their specific needs and for use in related systems. Then Rafael de Gongora (SENER)
Jim McLauchlan spoke about the use of FORAN for warships
in wood) and steel ropes will be used. FORAN is being used for the hull and superstructure forms, 3D modelling of the hull’s structure, special steel forced frames modelling, workshop drawings, together with nesting and cutting files. Tere was one problem, they could not create NC programs for an adze! Guangwu Liu (SENER) described a new
integrated module for naval architectural calculations (FBASIC) for use in early design stages. It will include hydrostatics, cross curves, tonnage and freeboard, loading conditions, longitudinal strength and intact stability, manoeuvring and seakeeping. In stability, for instance, user or standard (eg. IMO or naval) stability criteria can be used. Not all the advances planned will be available in V70R2.0
reviewed the challenges facing FORAN and the way they are being tackled. Shipbuilding is increasingly competitive and globalised so that improvements in processes, in cost savings and overall productivity are very important. SENER must keep pace with the developments in ship design (the need for cleaner ships and changes in IMO regulations), ship construction (automation of processes and use of robotics) and in IT soſtware and hardware. Tere is a need to foresee what the future holds – whilst some changes may not be economic today they may become so tomorrow. As a measure of SENER’s commitment the investment in FORAN has doubled between 2006 and 2012. Many changes will be introduced in V70R2.0 due to be launched in November 2012 but improvement is a continuous feature of FORAN. Luis Garcia (SENER) gave the closing speech.
With fewer contracts from the domestic market, SENER is expanding internationally with new companies in the Far East. Over the next few years efforts in FORAN will concentrate on concept and initial design and on technologically complex ships. He thanked those present for helping to
make FORUM 2012 such a success. He felt heartened by the attendance in spite of the general economic environment. It was with some sadness that he announced his intention to retire in just over a year’s time so that he could devote more time to his family. Fourteen countries were represented
by some 92 delegates and speakers. The meeting showed how FORAN is developing in response to the needs of its customers and the industry. NA
The Naval Architect September 2012
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