ATCx2016 shipbuilding seminar NAPA presentation (English)
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Transcript of ATCx2016 shipbuilding seminar NAPA presentation (English)
1 © NAPA
NAPA Steel and HyperWorkswill break new ground for structure design
Takashi MurakamiNAPA Japan Ltd.
5th August 2016
2 © NAPA
Agenda
Brief introduction of NAPA Group
FE Analysis in ship design process
Efficiency gain with NAPA & HyperWorks
Update info. of NAPA Designer & Drafting
Conclusion remarks
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5
3 © NAPA
NAPA Group
Software house for maritime
Founded in Finland, 1989
12 countries, 180 employees globally
95% of ships are designed using NAPA
Installed on over 2,000 vessels
Owned by ClassNK from 2014
4 © NAPA
NAPA Group
Designsupporting solutions
Operationsupporting solution
Lines
Hydrostatics / Hydrodynamics
Structure Design
Final Booklet
...
Performance Monitoring
Voyage Optimization
Electric Logbook
Loading Computer
...
5 © NAPA
NAPA Design Solutions
Naval Architecture
Basic design moduleLines, Hydro, Compartment Arr. etc.
3D
Model
43users
NAPA Steel
Structure design moduleDrawing, Weight, Structure Study etc.
14users
Japan
Japan
* Number of users is counted organization-based
6 © NAPA
NAPA Steel
Lines
Compartment
Weight, welding
Rule calc.PrimeShip data linkage
FE meshPrimeShip data linkage
HCSR
Analysis
3D model
Block div.
3 sides alignment
Vibration, Acoustic
Builder’s check
Stiff. Landing
Customization
IGES export Production design
Data takeover
* All features are used in actual design project
NAPA Steel
CAD export
7 © NAPA7 © NAPA
FE Analysis in ship design process
8 © NAPA
Rule
Dimensions
Hydro
Arrangement
E/R, M/E
Power
Speed
FOC
etc...
FEA in ship design process
Hull form Contract
Spec
GA
Accom. layout
ER layout
Trim
Stability
Long. strength
Maker list
etc...
Detail
Structure
Detail shape
Strength
• Rules
• FEA
Vibration
Steel weight
Outfitting
Piping
Electrics
Market Owner Class
Construction
Production
Steel order
Mech. order
Final Drw.
Final booklet
Factory
NAPA Naval Architecture
NAPA Steel
9 © NAPA
FEA is getting important
FEA: Increasing importance & workload
Stricter rules
HCSR
Rising CAE
Simulation-
based design
Front-loadedChanging design
process to
reduce cost
Breakaway from “Experience-based engineering”
10 © NAPA
General FEA process
Pre ProcessingData preparation
Main ProcessingMake matrix and computation
Post ProcessingDecision making by designer
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11 © NAPA11 © NAPA
Efficiency gain
with NAPA and HyperWorks
12 © NAPA
Discussion of better FEA process
Specific requirement in ship design
3D model utilization
13 © NAPA
Characteristics of ship design
Curved geometry Geometry of hull surface
Stiffened plate Shell mesh at molded surface
Plate thickness
Stiffener scantling
Stiffener idealization
Build-to-order industry Strict process control is needed
Never postpone a delivery!
Class approval Detailed assessment rules
Easy to standardize the
working process
14 © NAPA
Meshing of curved surface
NAPA makes FE mesh of curved hull form, easily
15 © NAPA
Stiffener idealization
PBEAM(for coarse Mesh)
Web as CQUAD(for fine mesh)
Shell only meshing(for very fine mesh)
One NAPA Steel model
16 © NAPA
Opening idealization
One NAPA Steel modelNo opening
Omit element
Rectangle shape
Reduce thickness(CSR-T)
17 © NAPA
3D model utilization
Amend many times
until class approval
ProductionDetailStructureBasic
Not planned 3D based design will increase workload
NAPA Hull form, Arrangement
3D CAD Drawing, Weight
HyperWorks HCSR, Vibration etc...
PrimeShip Rule calc.
Production 3D
Working plan
Master drawing
Outfitting
Piping
How many 3D
models are needed...
Give me a break.
18 © NAPA
NAPA Design Solutions
Project start
Displacement
CFD
Arrangement
Capacities
Loading Condition
StabilityIntact, Damage,
Probabilistic
Second generation
Long. Strength
Free form deformation
Power, EEDI
SeakeepingManeuvering
Hull form
Naval Architecture
19 © NAPA
NAPA Design Solutions
CAD export
Weight, Welding
Final bookletStatutory Compliance Manager
Production fairingHull Surface Editor
3D CAD I/FDXF, IGES, CADMATIC, Tribon
Slipway launchingLaunching Manager
Class rules calc.Data linkage
FE meshData linkage
FEA assessment
Structure
Inclining testInclining Test Manager
Feedback to design
Operation
NAPA Steel
20 © NAPA
NAPA Steel reduces FEA workload
NAPA Steel Model FE Mesh
If you have NAPA Steel model, you already have FE model
21 © NAPA
NAPA FEM is auto-meshing
NAPA: Auto meshingIn many cases, minor modification and
adding boundary condition are needed
Advanced mesh editingHyperMesh can handle huge FE
model easily and quickly
BDF
22 © NAPA
FEA with NAPA & HyperWorks
Improved Pre ProcessingEfficient preparation of FE model in ship design
Main ProcessingMake matrix and computation
Post ProcessingDecision making by designer
●
●
Boundary Condition
Adjustment
Nodes
Elements
Ship Designspecialty
Simulationspecialty
Material
23 © NAPA
Summary
FEA: Increasing importance & workload
Efficient FEA process, NAPA to HyperWorks
Unique requirement in ship design
Reduce repeating simple task, focus on DESIGNwith NAPA & HyperWorks
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3
24 © NAPA24 © NAPA
Appendix
Update info. Of NAPA Designer & Drafting
NAPA Shipping Solution
25 © NAPA
Latest news of NAPA Designer
Redesigned NAPA modeling tool Windows based software redeveloped from scratch
Latest ver.2016.2 can handle stiffener, seam, openings
NAPA Designer
26 © NAPA
Latest news of NAPA Designer
Surface Object modeling Plate and Primary supporting member
Compatible with traditional NAPA
Structure member modeling Modeling for approval drawing
GUI based modeling
Easy modeling, easy learning Batch process, copy, reflect, etc...
User can control smart naming rule
27 © NAPA
Latest news of NAPA Drafting
Seamless linkage from NAPA to AutoCAD Powered by AUTODESK AUTOCAD® OEM
From ver.2016.2, NAPA works with best CAD system
NAPA Drafting
28 © NAPA
Latest news of NAPA Drafting
2D sliced from 3D 3D model based 2D drawing
2D follows 3D modification
(User can control the updating lines)
3D model based annotations
Designed for ship designer X, Y, Z section and projection drawing
Shell expansion
Save as DWG User can utilize the drawing data as usual AutoCAD
29 © NAPA
FYR: NAPA Shipping Solutions
Loading Computer
Planning Monitoring Follow-up
Voyage Reporting Performance Analysis
NAPA Office (Web Portal)
Voyage Optimization
Departure Arrival
Real Time Monitoring
30 © NAPA