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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2

3

4

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

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●

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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2

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