1 Integrating Design with Simulation & Analysis Using SysML Status Update to SE DSIG on GIT SysML-related Efforts Russell Peak (presenter), Chris Paredis,

1

Integrating Design with Integrating Design with Simulation & Analysis Using SysML Simulation & Analysis Using SysML

Status Update to SE DSIG Status Update to SE DSIG on GIT SysML-related Effortson GIT SysML-related Efforts

Russell Peak (presenter),Russell Peak (presenter),Chris Paredis, Leon McGinnisChris Paredis, Leon McGinnis

Georgia Institute of Technology

Product & Systems Lifecycle Mgt. Center

www.pslm.gatech.edu

OMG Systems Engineering Domain Special Interest Group (SE DSIG) MeetingOMG Systems Engineering Domain Special Interest Group (SE DSIG) MeetingBurlingame CA Burlingame CA 2007-12-12 2007-12-12

Copyright © 2007 by Georgia Tech Research Corporation, Atlanta, Georgia 30332-0415 USA. All Rights Reserved. Permission to reproduce and distribute without changes for non-commercial purposes (including internal corporate usage) is hereby granted provided this notice and a proper citation are included.

2

AbstractWe provide an update on SysML-related activities at Georgia Tech. This presentation focuses on a project underway with Lockheed aimed at integrating design and engineering analysis using SysML. The primary objective is to define and demonstrate the methodology, tools, requirements, and practical applications for connecting a SysML system specification and design model with multiple engineering analysis and dynamic simulation models. This project employs excavators as a test case and contains several model types being interconnected with a system design model: fluid power (hydraulics), linkage dynamics, structural (FEA), cost, reliability, and factory flow.

CitationRS Peak, CJ Paredis, LF McGinnis (2007-12) Integrating Design with Simulation & Analysis Using SysML—Status Update to SE DSIG on GIT SysML-related Efforts. Presentation to OMG SE DSIG, Burlingame CA. http://eislab.gatech.edu/pubs/seminars-etc/2007-12-omg-se-dsig-peak/

Integrating Design with Simulation & Analysis Using SysML Integrating Design with Simulation & Analysis Using SysML Status Update to SE DSIG on GIT SysML-related EffortsStatus Update to SE DSIG on GIT SysML-related Efforts

3

““Wiring Together” Diverse Models via SysMLWiring Together” Diverse Models via SysML Level 2: Inter-Template Diversity Level 2: Inter-Template Diversity

Utilizes generalized MRA terminology (preliminary) [email protected] 2007-09

Simulation Templatesof Diverse Behavior & Fidelity

ECAD & MCAD Tools

Libraries & DatabasesClassification Codes, Materials,

Personnel, Procedures, …

CFDFlotherm, Fluent, …

General MathMathematica,

Maple, Matlab,…

Augmented Descriptive Models

EvacuationMgt.

DamagedStability

2D

Simulation Building Blocks

Tribon, CATIA, NX, Cadence, ...

Simulation Solvers

System DescriptionTools & Resources

3D

FEAAbaqus, Ansys,

Nastran, …

Operation Mgt. Systems …Propeller

Hydro-dynamics

Evacuation CodesEgress, Exodus, …

NavigationAccuracy

Systems & Software Tools

DOORS, Studio,

MagicDraw,Eclipse, …

…

Optimization Templates

…

Discrete EventArena, Quest, …

Tool AssociativityObject Re-use

LegendTool AssociativityObject Re-use

Legend

Naval Systems-of-Systems (SoS) Panorama—An Envisioned Complex Model Interoperability Problem Enabled by SysML/COBs/MRA

4

““Wiring Together” Diverse Models via SysMLWiring Together” Diverse Models via SysML Level 1: Intra-Template Diversity Level 1: Intra-Template Diversity

sxMosModel: MarginOfSafetyModel

allowable:

marginOfSafety:

determined:

effectiveLength:

mechanicalBehaviorModels:

material:

yieldStress:

name:

soi: Linkage

criticalCrossSection:

basicIsection:

flangeThickness:

webThickness:

shaft:

allowableInterAxisLengthChange:

uxMosModel: MarginOfSafetyModel

allowable:

marginOfSafety:

determined:

par [cbam] LinkagePlaneStressModel [Definition view]

deformationModel: LinkagePlaneStressAbb

rs1:

ws2:

ts2:

tf:

rs2:

ws1:

ts1:

nuxy:

wf:

tw:

ex:

force:

uxMax:

sxMax:

l:

linearElastic:

youngsModulus:

poissonsRatio:

flangeWidth:

sleeve1:

width:

outerRadius:

wallThickness:

sleeve2:

width:

outerRadius:

wallThickness:

condition: Condition

description:

reaction:

ts1

B

sleeve1

B

ts2

ds2

ds1

sleeve2

L

shaft

Leff

s

rib1 rib2

red = idealized parameter

MechanicalCAD model

CAE model (FEA)

Symbolic math models

[Peak et. al 2007]

5

Diverse Types of Relations ...Diverse Types of Relations ...(partially supported to date)(partially supported to date)

System ASystem A System BSystem B

a10 b9

a1 b1

a2

a3 b2

a4

a5[ i ] b3

a6 b4

a7 b5

b6

if a7 <= 10

if a7 > 10

a8 b7while a8 <= 50

a9 b8

b1 = a1 + a2

a4 < 100

b3 = AVG( a5 )

if (a6 <= 250) b4 = 250if (250 < a6 < 300) b4 = 300if( a6 > 300 ) b4 = a6

formula-based

equality

constraint

aggregate

buffered

selector

breaker

black-box

unidirectional[Tamburini, Peak, Paredis 2005]

6

SysML-Related Efforts at Georgia TechSysML-Related Efforts at Georgia Tech

• SysML Focus Area web page– http://www.pslm.gatech.edu/topics/sysml/ – Includes links to publications, applications,

projects, examples, etc.

• Selected projects– Deere: System dynamics (fluid power, ...)– Lockheed: System design & analysis integration – NASA: Enabling technology (SysML, ...)– NIST: Design-analysis interoperability (DAI)– TRW Automotive: DAI/FEA (steering wheel systems ... )

7

GIT-Lockheed SysML Project SynopsisGIT-Lockheed SysML Project SynopsisIntegrating System Design with Simulation and Analysis Using SysMLIntegrating System Design with Simulation and Analysis Using SysML

• Objective– Define & demonstrate the methodology, tools, requirements, and practical

applications for connecting a SysML system specification & design model with multiple engineering analysis & dynamic simulation models

• Period of Performance– August 1, 2007 through July 31, 2008

• Approach– Select one or more SysML modeling tools – Develop a system design model including electrical, mechanical, and software– Identify 3+ representative engineering analyses and associated analysis tools – Define methodology for integrating the system model with the analysis models – Define SysML and analysis tool requirements needed to support integration – Demo capability to integrate the system model with engineering analysis models – Identify key issues to address to further enhance this capability– Develop a roadmap for future work – Document results in a final report

8

GIT-Lockheed SysML Project Synopsis (cont.)GIT-Lockheed SysML Project Synopsis (cont.)Integrating System Design with Simulation and Analysis Using SysMLIntegrating System Design with Simulation and Analysis Using SysML

• Progress to Date (2007-11)– Project plan– SysML authoring tools selection

(EmbeddedPlus/Rational, MagicDraw)– Excavator as testbed problem – Initial iteration of high level excavator system model – Preliminary integration approach for system design & analysis models – Preliminary testbed environment

• Dig cycle simulation (Modelica)

• CAD/engineering analysis (NX, Ansys)

• Factory simulation (EM Plant)

9

GIT Modeling Environment GIT Modeling Environment for Excavator Test Casefor Excavator Test Case

Model Center

Reliability Model

Cost Model

Dig Cycle Model

Optimizer

ObjectiveFunction

Modelica

XaiToolsNo Magic / SysML

ExcavatorSystem Model

Factory CAD

Factory Layout

EM Plant / Factory Flow

ProcessSimulation

Process FlowTools

RSA/E+ / SysML

FactoryModel

Generic Tool BehaviorTool Types

RSA/E+ / SysML

ExcavatorExecutable Scenario

Operational Scenario

NX / MCAD Tool

CAD Model

2007-11-05

[WIP models]

10

Excavator Test CaseExcavator Test CaseTop-Level System BreakdownTop-Level System Breakdown

11

Excavator Operational DomainExcavator Operational DomainTop-Level Context ModelTop-Level Context Model

12

Excavator Operational DomainExcavator Operational DomainTop-Level Use CasesTop-Level Use Cases

13

Excavator Dig CycleExcavator Dig CycleActivity DiagramActivity Diagram

14


Model Center

Reliability Model

Cost Model

Dig Cycle Model

Optimizer

ObjectiveFunction

Modelica



Factory CAD

Factory Layout


ProcessSimulation

Process FlowTools

RSA/E+ / SysML

FactoryModel


RSA/E+ / SysML



NX / MCAD Tool

CAD Model

2007-11-05

15

Cost Aspects

Behavior Aspects

Excavator Analysis/Simulation ModelsExcavator Analysis/Simulation ModelsProblem DefinitionProblem Definition

VariousTopologies

Multi-Attribute Utility TheoryReliability Aspects

Stakeholder Concerns Integration of Concerns about System Aspects

Evaluation of Preferences

System Architectures

Analysis

Analysis

Analysis

Simulation

Simulation

Simulation

Multi-Body Dynamics,Hydraulics, ...

[Paredis et al. 2007]

16

Dynamic Physics-Based Behaviors Dynamic Physics-Based Behaviors HydraulicsHydraulics

• Open-source• High fidelity

• Nonlinear fluid models• Thermal models

• Hierarchical• Multi-disciplinary

Modelica Dynamic Behavioral Model

• Graphically represented via ISO 1219

17

LSMechanical Interface

Mechanical Interface



Engineering Schematic

Hydraulic Circuit DiagramHydraulic Circuit DiagramPressure-Compensated, Load-Sensing Excavator—ISO 1219 notationPressure-Compensated, Load-Sensing Excavator—ISO 1219 notation

18

SysML Schematic (ibd) — Basic ViewSysML Schematic (ibd) — Basic ViewPressure-Compensated, Load-Sensing ExcavatorPressure-Compensated, Load-Sensing Excavator






19

SysML Schematic (ibd) — Detailed ViewSysML Schematic (ibd) — Detailed ViewPressure-Compensated, Load-Sensing ExcavatorPressure-Compensated, Load-Sensing Excavator

ibd [Block] Simple Excavator [Hydraulic System Hxx]

: FD Pump

pn: AXD

MechJunction.s

FluidJunction.p

: Diesel Engine

pn: Cummins242

MechJunction.s

FluidJunction.c

: Vented Reservoirpn: TNK-2

FluidJunction.t

FluidJunction.t

2B: Rubber Hose

pn: Hose1

FluidJunctionFluidJunction

FluidJunction.t

MechJunction.bElecJunction.a

: Heat Exchanger

pn: HXB-3

FluidJunction.cFluidJunction.h

: Thermostatic Control Valve

pn: STAT3A

FluidJunction.2FluidJunction.1

: Filter

pn: Fil1b5

FluidJunction.b

FluidJunction.a

Ref: Doc Exx[Electrical System]

: Pressure Relief Valve


Can use a specific name for usage in the schematic, if like parts exist

Vendor or In-house PN

: Air Separator

pn: AS1FluidJunction

A1: Check Valve

pn: CHK1


A1: Servo Valve 5/3

pn: sv1

FluidJunction.2

FluidJunction.5


FluidJunction.4

A1: Actuator

pn: DBL21

FluidJunction.aMechJunction.r

FluidJunction.b

Ref: Doc Mxx[Mechanical System]

A2: Check Valve

pn: CHK1


A2: Servo Valve 5/3

pn: sv1

FluidJunction.2

FluidJunction.5


FluidJunction.4

A2: Actuator

pn: DBL21


FluidJunction.b

M1: Check Valve

pn: CHK1


M1: Servo Valve 5/3

pn: sv1

FluidJunction.2

FluidJunction.5


FluidJunction.4

M1: Motor

pn: DBL21


FluidJunction.b






20

Excavator Case StudyExcavator Case StudyNative Tool Models: ModelicaNative Tool Models: Modelica

Sw ingMotor

B

BoomCylR

B

BucketCyl

B

ArmCyl

B

Boo

mC

ylL

B

TP

LSB

TP

LSB

TP

LSB

TP

LSB

TP

LS

max

ma...

max1

ma...

max2

ma... max3

ma...

BpclsPump

circuitTank

accumulator

constantSpeed

Sw ingFl... BoomCyl... BoomCyl...

BoomCyl...

ArmCylB... ArmCylR... BucketC... BucketC...

sw ingComma...

boomCommand

armCommand

bucketCommand

BoomCyl...

hydraulics

world

x

y

Dig Cycle

environment

p_amb = 101325

T_amb = 288.15

Mechanical model of complete...

Bas

e

r={.

..n=

{0,..

.S

win

...

Car

riage

r={-

0.16

4,1.

...a

b

Boom

r={7.11,0,0}a b

b2_rr={2.85,1....

a b

b1_r

r={.

655,

....

ab

b4y

r={0

,.21.

..a

bb4xr={-.92...

abb3

r={4.22,1.3...a bcyl2f

cyl1

...

m=...

bC...

m=...

bB...

b1_l

r={.

655,

....

ab

cyl1

_l

b2_lr={2.85,1.18,...

ab

Armr={3.654,...

a b

m=...

bArm

Arm1r={0.49...a b

JointR...n_a={...Arm2

r={2.97,0....a b

cyl3f

m=5

0

bB...

p10r={.52...

n={...Ar...

Arm... Buc...

n={...Bu...

Boo...

n={...Bo...

Boo...

brakeS...

c...c...

c...c...

c...

c...

B...B...

fram

e_...

bra...

Multi-Body System Dynamics Model(linkages, ...)

Hydraulics Model

21

Excavator Hydraulics SubsystemExcavator Hydraulics SubsystemDesign Structure ModelsDesign Structure Models

22

Hydraulics Subsystem Simulation ModelHydraulics Subsystem Simulation ModelSimulation Component Connectivity AspectsSimulation Component Connectivity Aspects

23


Model Center

Reliability Model

Cost Model

Dig Cycle Model

Optimizer

ObjectiveFunction

Modelica



Factory CAD

Factory Layout


ProcessSimulation

Process FlowTools

RSA/E+ / SysML

FactoryModel


RSA/E+ / SysML



NX / MCAD Tool

CAD Model

2007-11-05

24

Factory/Mfg Modeling & Simulation Using SysMLFactory/Mfg Modeling & Simulation Using SysML[McGinnis et al. 2007]

SysML State Diagram

SysML Sequence Diagram

XML Parser

Discrete Event Simulation

25


Model Center

Reliability Model

Cost Model

Dig Cycle Model

Optimizer

ObjectiveFunction

Modelica



Factory CAD

Factory Layout


ProcessSimulation

Process FlowTools

RSA/E+ / SysML

FactoryModel


RSA/E+ / SysML



NX / MCAD Tool

CAD Model

2007-11-05

26

SysML parametrics execution via composable objects (COBs) for graph management and math/FEA solving via web services.

Composable Objects (COBs)

COB Services (constraint graph manager, including COTS solver access via web services)

Xa

iTo

ols

Fra

me

Wo

rk™

Ansys(FEA Solver)

Native Tools Models

Traditional COTS or in-house solvers

SysML Authoring Tools

Parametrics plugin

COB Solving & Browsing

COB API

...

Plugins Prototyped by GIT(to SysML vendor tools)1) Artisan Studio [2/06]2) EmbeddedPlus [3/07]3) NoMagic [12/07]*

Mathematica(Math Solver)

Enabling Executable SysML ParametricsEnabling Executable SysML ParametricsGIT GIT XaiToolsXaiTools Prototype Status Prototype Status

Execution via API messages

or exchange files

Xa

iTo

ols

Sys

ML

To

olk

it™

...

...

Next-Generation

Spreadsheet

TLEA

FLL

COTS =commercial-off-the-shelf

(typically readily available)

2007-12 Status- Examples working from IS07 Parts 1 & 2 papers (see next slide)- Prototype being scaled and hardened for industrial usage

27

Simulation-Based Design Using SysMLSimulation-Based Design Using SysML

Part 1: A Parametrics PrimerOMG SysML™ is a modeling language for specifying, analyzing, designing, and verifying complex systems. It is a general-purpose graphical modeling language with computer-sensible semantics. This Part 1 paper and its Part 2 companion show how SysML supports simulation-based design (SBD) via tutorial-like examples. Our target audience is end users wanting to learn about SysML parametrics in general and its applications to engineering design and analysis in particular. We include background on the development of SysML parametrics that may also be useful for other stakeholders (e.g, vendors and researchers).

In Part 1 we walk through models of simple objects that progressively introduce SysML parametrics concepts. To enhance understanding by comparison and contrast, we present corresponding models based on composable objects (COBs). The COB knowledge representation has provided a conceptual foundation for SysML parametrics, including executability and validation. We end with sample analysis building blocks (ABBs) from mechanics of materials showing how SysML captures engineering knowledge in a reusable form. Part 2 employs these ABBs in a high diversity mechanical example that integrates computer-aided design and engineering analysis (CAD/CAE).

The object and constraint graph concepts embodied in SysML parametrics and COBs provide modular analysis capabilities based on multi-directional constraints. These concepts and capabilities provide a semantically rich way to organize and reuse the complex relations and properties that characterize SBD models. Representing relations as non-causal constraints, which generally accept any valid combination of inputs and outputs, enhances modeling flexibility and expressiveness. We envision SysML becoming a unifying representation of domain-specific engineering analysis models that include fine-grain associativity with other domain- and system-level models, ultimately providing fundamental capabilities for next-generation systems lifecycle management.

CitationPeak RS, Burkhart RM, Friedenthal SA, Wilson MW, Bajaj M, Kim I (2007) Simulation-Based Design Using SysML. INCOSE Intl. Symposium, San Diego.

Part 1: A Parametrics Primer http://eislab.gatech.edu/pubs/conferences/2007-incose-is-1-peak-primer/

Part 2: Celebrating Diversity by Example http://eislab.gatech.edu/pubs/conferences/2007-incose-is-2-peak-diversity/

Part 2: Celebrating Diversity by Example These two companion papers present foundational principles of parametrics in OMG SysML™ and their application to simulation-based design. Parametrics capabilities have been included in SysML to support integrating engineering analysis with system requirements, behavior, and structure models. This Part 2 paper walks through SysML models for a benchmark tutorial on analysis templates utilizing an airframe system component called a flap linkage. This example highlights how engineering analysis models, such as stress models, are captured in SysML, and then executed by external tools including math solvers and finite element analysis solvers.

We summarize the multi-representation architecture (MRA) method and how its simulation knowledge patterns support computing environments having a diversity of analysis fidelities, physical behaviors, solution methods, and CAD/CAE tools. SysML and composable object (COB) techniques described in Part 1 together provide the MRA with graphical modeling languages, executable parametrics, and reusable, modular, multi-directional capabilities.

We also demonstrate additional SysML modeling concepts, including packages, building block libraries, and requirements-verification-simulation interrelationships. Results indicate that SysML offers significant promise as a unifying language for a variety of models-from top-level system models to discipline-specific leaf-level models.

28

Flap Linkage Mechanical PartFlap Linkage Mechanical PartA simple design ... a benchmark problem.A simple design ... a benchmark problem.

Background

This simple part provides the basis for a benchmark tutorial for CAD-CAE interoperability and simulation template knowledge representation. This example exercises multiple capabilities relevant to such contexts (many of which are relevant to broader simulation and knowledge representation domains), including:

• Diversity in design information source, behavior, fidelity, solution method, solution tool, ...• Modular, reusable simulation building blocks and fine-grained inter-model associativity

See the following for further information: - http://eislab.gatech.edu/pubs/conferences/2007-incose-is-1-peak-primer/ - http://eislab.gatech.edu/pubs/conferences/2007-incose-is-2-peak-diversity/

ts1

B

sleeve1

B

ts2

ds2

ds1

sleeve2

L

shaft

Leff

s

rib1 rib2

red = idealized parameter

29

Design-Simulation Knowledge GraphDesign-Simulation Knowledge GraphFlap Linkage Panorama—A Benchmark Design-Analysis Interoperability ProblemFlap Linkage Panorama—A Benchmark Design-Analysis Interoperability Problem

Material Model ABB:

Continuum ABBs:

E

One D LinearElastic Model

T

G

e

t

material model

polar moment of inertia, J

radius, r

undeformed length, Lo

twist,

theta start, 1

theta end, 2

r1

12

r3

0L

r

J

rTr

torque, Tr

x

TT

G, r, , ,J

Lo

y

material model

temperature, T

reference temperature, To

force, F

area, A

undeformed length, Lo

total elongation,L

length, L

start, x1

end, x2

E

One D LinearElastic Model

(no shear)

T

e

t

r1

12 xxL

r2

oLLL

r4

A

F

edb.r1

oTTT

r3

L

L

x

FF

E, A,

LLo

T, ,

yL

Torsional Rod

Extensional Rod

temperature change,T

cte,

youngs modulus, E

stress,

shear modulus, G

poissons ratio,

shear stress, shear strain,

thermal strain, t

elastic strain, e

strain,

r2

r1)1(2

EG

r3

r4Tt

Ee

r5

G

te

1D Linear Elastic Model

material

effective length, Leff

linear elastic model

Lo

Extensional Rod(isothermal)

F

L

A

L

E

x2

x1

youngs modulus, E

cross section area, A

al1

al3

al2

linkage

mode: shaft tension

condition reaction

allowable stress

stress mos model

Margin of Safety(> case)

allowable

actual

MS

Analysis Templatesof Diverse Behavior & Fidelity

(CBAMs)MCAD Tools

Materials LibrariesIn-House, ...

FEAAnsys

Abaqus*

CATIA Elfini*

MSC Nastran*

MSC Patran*

NX Nastran*

...

General MathMathematica

Matlab*

MathCAD*

...

Analyzable Product Model(APM)

Extension

Torsion

1D

1D

Analysis Building Blocks(ABBs)

CATIA, NX,Pro/E*, ...

Analysis Solvers(via SMMs)

Design Tools

2D

flap_link

critical_section

critical_simple

t2f

wf

tw

hw

t1f

area

effective_length

critical_detailed

stress_strain_model linear_elastic

E

cte area

wf

tw

hw

tf

sleeve_1

b

h

t

b

h

t

sleeve_2

shaft

rib_1

material

rib_2

w

t

r

x

name

t2f

wf

tw

t1f

cross_section

w

t

r

x

R3

R2

R1

R8

R9

R10

6R

R7

R12

11R

1R

2

3

4

5

R

R

R

R

name

linear_elastic_model

wf

tw

tf

inter_axis_length

sleeve_2

shaft

material

linkage

sleeve_1

w

t

r

E

cross_section:basic

w

t

rL

ws1

ts1

rs2

ws2

ts2

rs2

wf

tw

tf

E

deformation model

x,max

ParameterizedFEA Model

stress mos model


allowable

actual

MS

ux mos model


allowable

actual

MS

mode: tensionux,max

Fcondition reaction

allowable inter axis length change

allowable stress

ts1

B

sleeve1

B ts2

ds2

ds1

sleeve2

L

shaft

Leff

s

rib1 rib2

material

effective length, Leff

deformation model

linear elastic model

Lo

Torsional Rod

G

J

r

2

1

shear modulus, G

cross section:effective ring polar moment of inertia, J

al1

al3

al2a

linkage

mode: shaft torsion

condition reactionT

outer radius, ro al2b

stress mos model

allowable stress

twist mos model


allowable

actual

MS


allowable

actual

MS

allowabletwist

Linkage Extensional Model

Linkage Plane Stress Model

Linkage Torsional Model* = Item not yet available in toolkit—all others have working examples 2007-04

Parts LibrariesIn-House*, ...

LegendTool AssociativityObject Re-use

30

Flap Linkage Implementation in MagicDrawFlap Linkage Implementation in MagicDraw2007-12: Working demo includes parametrics solving via GIT 2007-12: Working demo includes parametrics solving via GIT XaiToolsXaiTools™™

WIP implementation of FlapLinkage APM as described in IS07 Part 2 paper [Peak et al. 2007]

31

SysML-Related Efforts at Georgia TechSysML-Related Efforts at Georgia Tech

• SysML Focus Area web page– http://www.pslm.gatech.edu/topics/sysml/ – Includes links to publications, applications,

projects, examples, etc.

• Selected projects– Deere: System dynamics (fluid power, ...)– Lockheed: System design & analysis integration – NASA: Enabling technology (SysML, ...)– NIST: Design-analysis interoperability (DAI)– TRW Automotive: DAI/FEA (steering wheel systems ... )

32

AbstractThis document formulates a vision for advanced collaborative engineering environments (CEEs) to aid in the design, simulation and configuration management of complex engineering systems. Based on inputs from experienced Systems Engineers and technologists from various industries and government agencies, it identifies the current major challenges and pain points of Collaborative Engineering. Each of these challenges and pain points are mapped into desired capabilities of an envisioned CEE System that will address them.

Next, we present a CEE methodology that embodies these capabilities. We overview work done to date by GIT on the composable object (COB) knowledge representation as a basis for next-generation CEE systems. This methodology leverages the multi-representation architecture (MRA) for simulation templates, the user-oriented SysML standard for system modeling, and standards like STEP AP233 (ISO 10303-233) for enhanced interoperability. Finally, we present COB representation requirements in the context of this CEE methodology. In this current project and subsequent phases we are striving to fulfill these requirements as we develop next-generation COB capabilities.

CitationDR Tamburini, RS Peak, CJ Paredis, et al. (2005) Composable Objects (COB) Requirements & Objectives v1.0. Technical Report, Georgia Tech, Atlanta. http://eislab.gatech.edu/projects/nasa-ngcobs/.

Associated Project

The Composable Object (COB) Knowledge Representation: Enabling Advanced Collaborative Engineering Environments (CEEs). http://eislab.gatech.edu/projects/nasa-ngcobs/.

Composable Objects (COB) Requirements & ObjectivesComposable Objects (COB) Requirements & Objectives

33

AbstractSysML holds the promise of leveraging generic templates and processes across design and simulation. Russell Peak joins us to give an update on the latest efforts at Georgia Tech to apply this approach in various domains, including specific examples with a top-tier automotive supplier. Learn how you too may join this project and implement a similar effort within your own company to enhance modularity and reusability through a unified method that links diverse models. Russell will also highlight SysML’s parametrics capabilities and usage for physics-based analysis, including integrated CAD-CAE and simulation-based requirements verification. Go to www.omgsysml.org for background on SysML—a graphical modeling language based on UML2 for specifying, designing, analyzing, and verifying complex systems.

Speaker BiosketchRussell S. Peak focuses on knowledge representations that enable complex system interoperability and simulation automation. He originated composable objects (COBs), the multi-representation architecture (MRA) for CAD-CAE interoperability, and context-based analysis models (CBAMs)—a simulation template knowledge pattern that explicitly captures design-analysis associativity. This work has provided the conceptual foundation for SysML parametrics and its validation.

He teaches this and related material, and is principal investigator on numerous research projects with sponsors including Boeing, DoD, IBM, NASA, NIST, Rockwell Collins, Shinko Electric, and TRW Automotive. Dr. Peak joined the GIT research faculty in 1996 to create and lead a design-analysis interoperability thrust area. Prior experience includes business phone design at Bell Laboratories and design-analysis integration exploration as a Visiting Researcher at Hitachi in Japan.

CitationRS Peak (2007) Leveraging Simulation Templates & Processes with SysML: Applications to CAD-FEA Interoperability. Developing a Design/Simulation Framework, CPDA Workshop, Atlanta.

http://eislab.gatech.edu/pubs/conferences/2007-cpda-dsfw-peak/

Leveraging Simulation Templates & Processes with SysMLLeveraging Simulation Templates & Processes with SysML Applications to CAD-FEA InteroperabilityApplications to CAD-FEA Interoperability

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Integrated System Design and Analysis Models Integrated System Design and Analysis Models Benefits of SysML-based Template ApproachBenefits of SysML-based Template Approach

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Documents

1 Integrating Design with Simulation & Analysis Using SysML Status Update to SE DSIG on GIT SysML-related Efforts Russell Peak (presenter), Chris Paredis,