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Engineering software references

CAFE
ng.zine: System for concurrent and group design of engineering structures
CATIA – NAPA Integration for design of ship hull and internal sub-division
TVIX: Optimization tool for early design of stiffened and sandwich panels
Re-Mesher: specialized tool for fast and accurate re-mashing of an existing finite element model
Mesher: Tool for automated fine-mesh generation in finite element modeling
MGV VISUALIZER – CFD Pre-processor
MGV LINER – Digitalization of Scanned Hull Forms
FE-BOILER – STCALC
FE_BOILER – TUBE PLATE LAYOU
TOPLISE – Utilization and Maximization of Thermal Plant Efficiency
FE-BOILER – Cylindrical shell connections
LS-DYNA software for solving highly non-linear transient problems

CAFE is an innovative software for simple and rapid generation of ship concepts. The software relies on an easy-to-design logic which enables a user-friendly design environment. 3D ship and equipment models can be imported into the system. CAFE automatically generates classification drawings that include equipment arrangement.

CAFE is used by:

EU FP7 projects - ULYSSES and SAFEWIN
University of Rijeka, Croatia
Centre of Maritime Technologies, Hamburg, Germany
Aalto University, Helsinki, Finland
Naval Architecture Progress, Greece
De Naval ltd., Rijeka, Croatia
Intergraph Italia LLC, Italy
Bonum ltd., Zagreb, Croatia
Scops ltd., Zagreb, Croatia
NAP, Greece

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as2con is developing a specialized design system for concurrent and group design of engineering structures, at the moment concentrating on design of ships. The system enables real-time integration of various design tools through an XML based platform and parametric data base, allowing for concurrent design of various ship’s sub-systems. ng.zine allows therefore multi-designer environment. The control of such activity is conducted through a novel group design methodology based on multi-stakeholder decision making.

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as2con is developing a software tool for design and optimization of laser-welded sandwich panels and stiffened panels. This software tool, initiated at Helsinki University of Technology in 1995, is capable of rapid optimization of panel scantlings and geometry for minimum weight and minimum production costs, accounting for the imposed loads and strength. The tool is at the moment capable to consider basic pressure loadings and simply supported boundary conditions for the beam with two and three symmetric supports. The following core geometries are currently available: VF, V, T, I, O, C, X. The tool is simple to use in a manner of calculator returning the optimum panel design within a few seconds. User has to choose the type of profile for the core plate and to provide the minimum and maximum scantlings including the type of material usted. Additionally, if user is interested into production characteristics, it is necessary to input some production data, such as for instance cost for 1 m of welding. The tool can also consider the additional core material for sandwich panels, such as foams, balsa wood, etc. The tool is organized in several logical steps, including the definition of geometry, production parameters, loads and supports.


	Re-Mesher– specialized tool for fast and accurate re-mashing of an existing finite element model (2006)
		as2con has developed a computer program for fast and accurate re-meshing of an existing fine mash of finite elements. The main purpose of this software is to recreate the fine mesh into half, one third, one quarter or any other smaller size ratio of a new element dimension with respect to the original element size. It is all done within a few minutes of work. Usage of this software is very simple because all a user has to do is to define boundaries of box within which one wants the model to be re-meshed, and to specify the new element size. The software will re-mesh all the elements inside the defined box and also it will recreate transitional elements along the boundaries of the box. Therefore, a user does not have to create transitional elements from larger to smaller elements by redefining geometry an element by an element. This software saves an existing model and makes a new one with finer mesh so that a user can always keep both models. This software was also tested on LS-Dyna models and worked perfectly as shown in figures.
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as2con is developing a specialized tool for fast and accurate re-meshing of an existing finite element model. The main purpose of this software is to recreate the fine mesh into half, one third, one quarter or any other smaller size ratio of new element dimension with respect to the original element size. The usage of this tool is very simple as the user is only required to define a boundaries of a box within which the model needs to be re-meshed. Software will then automatically re-mesh all the elements inside the defined box, but what is important it will also recreate transitional elements along the boundaries of the box. Hence, the user is therefore not required to manually recreate the transitional elements between the original larger to new smaller elements. This software then saves a redefined model within a new file so that user can always return to the original models. This software was tested with LS-DYNA models for the numerical simulation of accidental loading on ship structures.

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MGV is a computer program developed in cooperation with Bureau Veritas, Paris and Faculty of Mechanical Engineering and Naval Architecture, Zagreb. The Moloh's purpose is a fast generation of hydrodynamic mesh for CFD analysis of ship and offshore structures. Also it is postprocessing visualization tool that can visualize element: types, groups, properties, normal verification etc. MGV uses OpenGL framework and XML database format.

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MGV Liner is a preprocessor for MGV. It does a fast and accurate digitalization of scanned hull form lines. It can make a conversion from jpg, gif, tiff, png and other graphical bitmap image formats to vector based graphics of ship hull form lines.

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STCALC is a integral part of FE-BOILER -> Fast and Easy Boiler Design, which is a computer application developed for SAACKE MARINE SYSTEMS, TPK-Nova Ltd. Zagreb. STCALC is a computer program module for strength calculation and classification of pressure vessels according to the following classification societies: DNV, GL, LR, BV, CCS, RMS, ABS and RINA. It has inbuilt chart assistant for reading diagrams provided by classification societies and a formatted report generator for classification approval. Report can be generated in MS Word or PDF. Also STCALC has preloaded material library for tube plates according to EN, DIN, NV etc.

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TUBE PLATE LAYOUT is a integral part of FE-BOILER -> Fast and Easy Boiler Design, which is a computer application developed for SAACKE MARINE SYSTEMS, TPK-Nova Ltd. Zagreb.TUBE PLATE LAYOUT is a program module for boiler tubes optimal distribution according to thermal calculation. Distribution can be achieved by setting the minimal boiler diameter or required number of tubes for distribution. After achieving optimal distribution, program uses it's interfaces to AutoCAD or Solid Works to automatically generate a drawing of such boiler and all the tubes involved without an user interference.

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TOPLISE is a computer application developed for Elektroprojekt Inc. Zagreb. It is based on PROTEUS FORTRAN solver developed by Gilbert Services Inc. with a purpose of thermal plant energy utilization and maximization of the complete system efficiency. This program is capable of using SI and US based units. Our company has reused the FORTRAN solver and developed a new graphical user interface. The new GUI has block based thermal elements such as turbines, heat exchangers, burners and other equipment that can be handled by drag and drop technique and also their parameter data can be easily accessed and changed by simple mouse actions.

LS-DYNA software for solving highly non-linear transient problems

as2con is an authorized agent and support of Livermore Software Technology Corp in Croatia for LS-DYNA, explicit finite element analysis software.

LS-DYNA capabilities