© copyright qinetiq limited 2009 1 introduction to paramarine: hull generation advanced hullform...

© Copyright QinetiQ Limited 2009

1

Introduction to Paramarine:Hull Generation

Advanced Hullform Generation within Paramarine


Hull Generator:

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Contents of this presentation

• Key Features

• Requirements

• Overview

• Hullform Synthesis

• Hullform Surface Analysis

• Examples


Hull Generator:

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• Key Features

• Requirements

• Overview



• Examples


Hull Generator: Key Features

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• Rapid and accurate surface generation

• Flexibility to model complex free-form geometry

• Intuitive Graphical User Interface

• Ability to create parametric surfaces & hull forms

• Quickly adjustable


Hull Generator:

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• Key Features

• Requirements

• Overview



• Examples


Hull Generator: Requirements

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• User Requirements- Ease of use- Flexibility- Robust- Parametric- Importing Images

• Software Requirements- Surface checks- Degeneracy- Construction of sheet or solid bodies- Knot vector, control point weights- Paramarine object design


Hull Generator: Example Designs

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Yacht hull and upperworks Tanker hull


Hull Generator:

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• Key Features

• Requirements

• Overview



• Examples


• Define shape driving curves

Hull Generator:


• Define shape driving curves• Insert curves as necessary to provide accurate definition of surface

Hull Generator:


• Define shape driving curves• Insert curves as necessary to provide accurate definition of surface• A surface can then be created

Hull Generator:


• Define shape driving curves• Insert curves as necessary to provide accurate definition of surface• A surface can then be created• And ultimately a solid

Hull Generator:


Hull Generator:

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• Key Features

• Requirements

• Overview



• Examples


Hull Generator: XT Curves Constraints

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bead

copy

interpolateinterpolate

knuckleinterpolatestraight


Hull Generator: XT Surfaces – Subdivision

Regular Subdivision Irregular Subdivision


Hull Generator:

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• Key Features

• Requirements

• Overview



• Examples


Hull Generator: Shape Analysis – Curvature Lines

Curvature Lines for Section Curves

Curvature Lines for an individual XT Curve


Hull Generator:

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• Key Features

• Requirements

• Overview



• Examples


Hull Generator: Examples


Hull Generator: Parametric Concept Design - Surface Ship

Initial shape of a parametric hull


Hull Generator: Parametric Concept Design - Surface Ship

The same hull after modifying transom width, flare, and parallel midbody


Hull Generator: Parametric Concept Design - Submarine

• Complex Curvature




• Parametrically adjustable





• High Quality Solids






• High Accuracy in Analysis






• High Accuracy in Analysis

• Quickly adjustable

• Design Change ImpactAssessment


Hull Generator: Recreation of existing designs

Offset Data Bitmaps located in 3D space


Texture maps

• Import pictures into graphics pane

• Scale, rotate or shear

• Set picture datum

• Pictures are orthogonal on graphics pane

• Sketch around pictures and save hours © Earthrace


Earthrace Case Study


Analysed in HYDRODYNA (Hydrodynamic software) by Frazer-Nash Consultancy


Hull Generator: Is this the end of the Story?

• Solid Body hull forms can be analysed using the full extent of Paramarine naval architecture modules

• Hull forms can be exported to external programs for further analysis, HYDRODYNA/CFD, Abaqus CAE, Fredyn, FORAN etc

Hull FormGeneration

Stability

and

Hydrostatics

StructuralAnalysis

Modelling

Powering

Parasolid

Design forProduction

Early StageDesign

Manoe-uvring

RadarCross

Section

Blast & Fragmentation

Endurance

Seakeep-ing

Ultimate Strength

PressureHull

Strength


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Thank you for watching.

If you would like further information please contact [email protected]

© copyright qinetiq limited 2009 1 introduction to paramarine: hull generation advanced hullform...

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copyright qinetiq limited

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