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Ship, Yacht Design & Marine

Infinite Science Technologies provides to customers integrated design and engineering services in merchant and naval shipbuilding, Ship, Yacht Design and Marine Engineering projects of different types and tonnage. Starting from the birth of the idea to build a ship until the ship is put in service and afterwards in operations such as maintenance, repair or conversion during the ship's lifetime, Infinite Science Technologies fulfills to various engineering needs, timely and with high quality.

Infinite Science Technologies always cares about customer needs and requirements when developing new designs as well as some important aspects such as updated rules and regulations to be followed depending on ship type, physical conditions of the shipyard where the building will take place, specifications of material and equipment to be used in the ship and at last new trends and criteria which are followed and generally accepted in the World.

A] Basic Design Engineering:
A ship design project can be described as a set of processes that begins with a feasibility analysis, continues as conceptual and contractual design phases, connects with shipbuilding activities by production engineering and finally terminates after verification experiments and certification operations are finished. Within a ship design project various work disciplines such as naval architecture, mechanical engineering, industrial design, industrial engineering, electrical engineering, electronic engineering, architecture, etc. get together and a harmony, a strong collaboration environment should be maintained to achieve a successful project.

a) Conceptual Design:
Conceptual design phase includes a group of works and processes where all documentation that describes and guarantees the ship according to customer’s needs is generated. As a result of conceptual design phase it becomes possible to extract a preliminary material list, to calculate the cost of workmanship and therefore to form a preliminary approach about building cost estimation.

b) Contractual Design:
In a new ship building project the contractual design process is the most important design phase where all design calculations are carried out, final design and configuration decisions are made and a smooth building process with an end product delivery that would fulfil precisely the customer’s needs are guaranteed. Piping Systems
• Fire, Safety and Insulation Plans
• Access and Escape Plans
• Procurement List
• Docking Plan
• Production Block Plan
• Ship Model
• Heating, Ventilation and Air Conditioning (HVAC) Systems
• Capacity, Stability & Long. Strength Calculations

B] Production Engineering:
Production engineering process includes the preparation of all documents and information needed for building operations of the ship basic design is finished. At this stage a 3D CAD/CAM model which includes the ship’s general arrangement, structure, system components and material particulars in a database.

Infinite Science Technologies has a deep experience on the preparation of 3D production model of the ship with special CAD/CAM software applications on the basis of basic designs developed either in-house or by another design company. The main benefits of 3D production model for the building processes are cited below.

• Making an effective and efficient production planning.
• Using areas and volumes more efficiently and avoiding clashes by a strong coordination between different systems or disciplines.
• Creating opportunity to simulate the functions and improve the product.
• Allowing a more precise weight control.
• Keeping all material and particularity information of the ship in a single database and fast accessibility when needed.
• Getting more precise information for cost estimation and pricing.
• Producing more accurate and updated information for suppliers of material and equipment.
• Preventing material waste with correct procurement information.
• Fast and effective production of reports such as painting areas, weight and center of gravity information on the basis of ship’s part or block, list of steel plates and profiles which are important for production costing.
• Enabling product lifecycle management capability.

a) Hull Design:
For the ship whose structural scantling information is determined during contractual design process, structural elements such as shell expansion, deck construction, bulkheads together with stiffeners, brackets, webs, floors, girders, etc. are modelled with material specifications in 3D and in accordance with the block division plan. Afterwards following documents and information are prepared for the building of the ship’s hull structure;

• Assembly Chart
• Hull Workshop Drawings
• Nesting Drawings
• Profile Production Sketches
• Plate and Profile Bending Molds
• Jig Dimensions
• Material Lists
Infinite Science Technologies undertake hull design, 3D modeling, creation of production drawings and nesting.

• Hull design:
Creation of detailed models based on basic drawings. These facilitate block wise production and erection.

• Hull production drawings:
Creation of all sectional views such as side shell, deck, bulkheads etc.

• Hull 3D model:
Creation of 3D model with all information such as bevels, shrinkage, assembly, and identification of position numbers etc.

• Nesting of plates:
Creation of burning tapes, nesting production charts, NC-generic files, post-processor files and bending data.

b) Outfitting Design:
Outfitting production engineering includes all components except the hull structure of the ship. In the scope of this process 3D modelling of the following subsystems and equipment, installation of the equipment in relevant spaces, clash control and preparation of necessary production documents and in information are carried out.

In order to create 3D models of these systems with their components and prepare equipment foundations, equipment such as main engine, generator, pump, deck machinery, mooring equipment, switchboard, etc.

i) Detail Design & Production Documentation:
Infinite Science Technologies has wide expertise in the area of creation of 3D models and layouts of equipment, structures, machinery parts, piping, cable trays and HVAC systems.

• Equipment / Machinery room layouts
• Heating Ventilation & Air Conditioning (HVAC)
• Cabling
• Piping systems

ii) Interior & Exterior Design:
Infinite Science Technologies provides Interior & Exterior Design Services for Accommodation Areas, Inner & Outer Deck Areas, for Ship Building Industry.

Accommodation-Interior Design:
• Accommodation Layout
• Cabin 6-Views
• Panelling, Lining , Insulation
• Strive constantly to be Techno-savvy
• 3D Views
• Ceiling installation drawings
• Floor installation Design
• Cabin Views
• Steel outfitting for ceiling & wall panel installation Design
• Furniture installation Design
• Wall panel installation Design
• Pilot & passenger seats Design

Exterior Areas:
• Exterior Views
• Ocean Engineering Structures Design
• Detailed drawings with indication of Equipment, Fittings & Furnishings etc
• Conceptual Exterior & Interior Layout Design

iii) 3D Modelling:
Infinite Science Technologies provides Interior & Exterior 3D Visualizations Services, for Shipbuilding Industry. The views indicate even the intricate level of detailing for exteriors as well as interiors.

• 3D modelling of equipment
• Modelling of a complete vessel
• 3D Views & Animations

C] CAE Analysis / Advanced Engineering Analysis:
Computer-aided Engineering Analysis can be described as the representation of a physical structure with a numerical mesh divided into elements of finite number and solution of differential equations belonging to a specific physical problem on this numerical mesh by using appropriate boundary conditions.

The effects of the CAE analysis on ship design processes and the benefits to ship-owners can be defined as follows,

• Ship’s structure can be optimized both in terms of robustness and weight.
• Critical areas or points of the ship can be determined. This allows to pay special attention on these areas during maintenance and thus the operational lifetime of the ship is increased.
• The underwater and surface hull form of the ship can be optimized in terms of resistance and propulsion. Fuel consumption and the diffusion of the greenhouse gases is decreased.
• Crew’s comfort is guaranteed with noise and vibration analysis.
• Equipment functionality analysis is carried out by mechanism simulations and absence of any function is avoided.

The advanced engineering analyses that are carried out by Infinite Science Technologies for ship design verification are categorized in following main groups.

a) Finite Element Method (FEM) Analysis:

FEM Analysis has become an integral part of structure design for offshore units. The usage of Load Resistance Factor Design (LRFD) in structure design has made it essential to simulate the structure behaviours under various loading conditions and check the true resistance of structure.

i) Local Structure Strength Analysis:
The 3D finite element model of a specific local structure of the ship is formed with fine mesh. The stress values created by the forces acting on this structure are calculated and structural strength analysis is carried out. Following studies are some examples for local structure strength analysis,

 Bearing capacity calculation and stress analysis of equipment foundations (Crane, machinery, mooring equipment, deck machinery, weapon, etc.)
 Fatigue analysis
 Linear and non-linear buckling analysis

ii) Local Structure Vibration Analysis:
Within the scope of local structure vibration analysis there are free vibration analysis and derricks and panel structures such as deck or bulkhead supported by stiffeners, webs and pillars.

iii) Thermal Analysis:
This category includes the analysis to find thermal distribution on the ship’s structure exposed to thermal loads due to high temperature values and the calculation of stress values created because of this thermal distribution. Thermal analysis are carried out especially for following ship types,

 Asphalt tankers with integrated tank structure
 Oil product tankers exposed to thermal loads
 LNG tankers carrying natural gas liquefied by refrigeration

iv) Global Ship Structure Strength Analysis:
Based on the type and structure of the ship a 3D finite element model of the global or her three compartments representing the ship is prepared. By calculating the force and moment values that are cited below and affecting the ship’s structure, the stress analysis of ship’s beam and her primary structural elements is carried out.

 Vertical still water and wave bending moment
 Still water and wave shear forces
 Horizontal bending moment
 Torsional moment
 Slamming forces
 Various internal and external loading combinations

v) Global Ship Vibration Analysis:
Following analysis are carried out by creating appropriate 3D finite element model of the ship taking the ship’s structure, her mass distribution and additional water mass into consideration.

 FREE VIBRATION ANALYSIS:
This analysis is carried out calculate the free vibration modes and shapes of ship in wet and dry conditions.

 FORCED VIBRATION ANALYSIS:
This analysis includes the study of response of the ship’s structure with damping against the unbalanced forces of main engine and frequency forces of propeller first and second blades acting on ship’s structure. As a result of this analysis the displacement, velocity and acceleration values of vibration originated in any part of the ship can be obtained.

b) Computational Fluid Dynamics (CFD) Analysis:
Infinite Science Technologies provides solutions to various fluid based engineering problems such as hull form optimization. By this method, variables like ship’s speed, the necessary power to achieve the required speed and the necessary fuel amount to get the needed power can be calculated and optimized in most economic and environment-friendly way. Infinite Science Technologies provides to its customer following engineering analysis services within the scope of a ship design project,

 Ship friction, form and wave resistance calculation
 Appendage resistance calculation
 Wake distribution on propeller plane
 Free surface flow and friction resistance
 Underwater and surface flow stream plots
 Calculation of propeller’s kt, kq and cavitation
 Propulsion test and calculation of propulsion parameters (effective wake, thrust deduction, relative rotative efficiency) with propeller
 Effect of the propeller on ship’s hull and noise induced by propeller
 Flow in ventilation ducts and ventilation simulation
 Calculation of hydrodynamic derivatives for maneuvering calculations.