Combined Research and Curriculum Development
of Web Based Educational Modules on
Mechanical Behavior of Materials
R. Kriz*, D. Farkas**, R. Batra*, R. Levensalor***, and S. Parikh*
University Visualization and Animation Group (UVAG)
Virginia Polytechnic Institute and State University
* Engineering Science and Mechanics
** Materials Science and Engineering
*** Computer Science
U
V
A
G
International Conference on
Materials for Advanced Technologies
1 - 6 July 2001, Singapore
Organized by the Materials Research Society
Presentation Overview









U
V
A
G


Putting the CRCD Project in Context
CRCD Project Objectives
New technologies used in NSF-CRCD curriculum development
 Fully Immersive Virtual Environment: “CAVE ™”
 Collaborative Design Environments: Desktop to CAVE
Creating Shared Collaborative Virtual Environments
AtomView: Visualizing Nanostructure Simulation Results
CCC_atom: Collaborative AtomView
DIVERSE: Physics Based Simulations - Collaboration
Physics Based Simulation Collaboration w/o CAVE: NPIB
CRCD Classes: ESM/MSE4984 & EMS/MSE5984
 Lectures & Modules: Nano-, Micro-, Macro- scale
Observations & Conclusions
Recommendations & Future Work
Putting CRCD Project in Context
University Initiatives; Sponsors; Industrial Participation





University Visualization and Animation Group of the Advanced
Communications & Information Technology Center
Academic Research Infrastructure: Acquisition of a CAVE:
Breaking Research and Education Barriers by Developing
3-D Visualization Technology (NSF Grant CISE-9601874)
Combined Research and Curriculum Development:Computer
Simulation of Material Behavior - From the Atomistic to the
Continuum Level (NSF Grant EED-9700815)
Enabling Technologies - Data and Collaboration Team: Human
Computer Interaction and Visualization (NSF PACI)
“Scientific Modeling and Visualization Classroom”
(Visual Numerics, Inc. & Sun Microsystems, Inc., Foundation Grant)
U
V
A
G

Navy Collaborative Integrated Information Technology Initiative:
Collaborative Virtual Environments for C&C (ONR BAA 00-007)
CRCD Project Objectives:
• Develop modules for teaching senior and graduate level courses on
“Computer Simulation of Mechanical Behavior of Materials”
• Develop Java Web-based interactive modules
• Visual Numeric’s PV-Wave and JWave, (http://www.vni.com)
• VT’s Network Programming Interface Builder (NPIB)
(http://www.jwave.vt.edu/npib)
• Teach basics of mechanical behavior using research simulation code
• Students learn how macroscopic properties are controlled by
phenomena at the atomistic and microstructural levels
• Advanced visualization techniques, i.e. the “CAVE”, are used to
convey structure-property relationships at a fundamental level
U
V
A
G
University Visualization and Animation Group
of the
Advanced Communications & Information Technology Center
New technologies used in NSF-CRCD curriculum development:
- Fully Immersive Virtual Environment: “CAVE ™”
(NSF CISE: 9601874)
http://www.cave.vt.edu
- Collaborative Design Environments: (NSF & ONR)
U
V
A
G
Network Programming Interface Builder (NPIB)
CAVE Collaborative Console (CCC)
AtomView
CCC_atom
DIVERSE
Advanced Communications &
Information Technology Center
(ACITC)
VT-Collaboration on-campus
(Connecting desktop computers to the CAVE was critical)
University Visualization &
Animation Group (UVAG)
U
V
A
G
What is a CAVE?
U
V
A
G
Viewer immersed In 3D-structure.
Gives viewer unique perspective to study
3D structure - property relationships.
U
U
V
V
A
G
Shared Virtual Environments
(Connecting desktop computers to the CAVE was critical)
CAVERNsoft - Limbo: CAVE Collaborative Console (CCC)
http://www.sv.vt.edu/future/cave/software/ccc/
U
V
A
G
World-Wide Collaboration
Jason Leigh & Andrew Johnson
Electronic Visualization Lab, UIC
Remote Participants:
• Argonne National Lab
• IHPC, Singapore
• CRCACS, Australian NU
• IML, Tokyo Univ.
• CCPO, Old Dominion Unv.
• NCSA, UIUC
• UVAG, Virginia Tech
• Northwestern Univ.
U
V
A
G
Collaborative
Awareness Tools
Kevin Curry
Class Project, 1998:
Computer- Supported
Cooperative Work
M.S. Thesis, 1999:
“Supporting Collaborative
Awareness in Tele-Immersion”
U
V
A
G
I hear you. You hear me. But where
are you and what are you looking at?
Recorder
Awareness
Participants
U
V
A
G
Created voice command
interface, but users
preferred menus
AtomView
NCSA-VT: J. Shalf / R. Kriz
With AtomView material
scientists can analyze and
interpret physics based
simulation results
U
V
A
G
Physics based
Simulation
Models
U
U
V
V
A
A
G
G
Two users in CCC_atom viewing a
Large Ni-Al B2 simulated structure.
AtomView Modes:
• Scale Model
• Scale Atoms
• Navigate
• Play animation
CCC features not shown:
• Shared views
• Jump next to
• Tether to
• Record play
U
V
A
G
Crane Ship 6-DOF
DIVERSE Applications:
http://www.diverse.vt.edu
Physics Based Simulations
I-Dock 6-DOF
Haptic Feedback
NUWC/NRL CONRAY
Undersea Acoustic 3-DOF
Multi-parameter: Bottom Bounce
U
V
A
G
D. Bevan, Biochemisty
L. Watson, Computer Sci
R. Kriz & S. Parikh, ESM
U
V
A
G
Application of Visualization and Haptic
Feedback to Enhance Molecular Docking
http://www.sv.vt.edu/future/cave/resprj/idock/idock.html
Beowulf Cluster
Future Simulations
Desktop
Physics-based simulation model
of acoustic bottom bounce
Desktop< -> I-Desk <-> CAVE
I-Desk
CAVE
U
V
A
G
http://www.sv.vt.edu/future/cave/resprj/navciiti/nuwc_task2-1/
Collaboration w/o CAVE
Combined Research
Curriculum Development
http://www.jwave.vt.edu/crcd
Network Programming
Interface Builder (NPIB)
http://www.jwave.vt.edu/npib/
NPIB is a rapid application
development tool that researchers
and educators can use to create,
maintain, and archive numerous
parametric studies based on their
legacy computer simulations
U
V
A
G
Example: 3D Wave Surface
Working “Real-Time” Archive
U
V
A
G
Submit
email notifies user
simulation completed
Results Viewed at Desktop
U
V
A
G
Results.html
Results Viewed
In the CAVE
CRCD Classes: ESM/MSE - 4984 & 5984
Nano-scale:

Lecture Topics:







Micro-scale:

Crystal bonding
Crystal structures
Crystal mechanical behavior
Dislocations
Fracture
Fracture at Interfaces







Atomistic 2-Modules:


Lecture Topics:
Ni-Al grain boundary crack
Vacancy in Iron


Interface cracks
Anisotropy
Laminates
Free-Edge problem
Interface singularities
Ply crack singularities
Cracks homogenous:
isotropic-anisotropic
Wave propagation:
Isotropic-Anisotropic











Microscale 21-Modules:




Anisotropic polar plots
Cijkl Tensor glyphs
Laminated plate analysis
Fem of Free-Edge







Woven & Nonwoven
FEM with & w/o ply crack

U
V
A
G
Macro-scale:

Lecture Topics:
Woven & Nonwoven
Stroh’s solution Free-Edge
Stroh’s solution Ply-Crack
Singular FEM Mode-I&II
FEM circular hole
Wave propagation 1-D / 2-D
Stress
Equilibrium
Strain
Material characterization
Boundary conditions
Work External Forces
Minimum Potential Energy
Uniqueness Theorem
Axial bar deformation
Beam bending terminal couples
Continuum 2-Modules:


Stresses thick walled cylinders
Brittle-Ductile transition
Nanoscale:

Lecture Topics:







Atomistic 2-Modules:


U
V
A
G
Crystal bonding
Crystal structures
Crystal mechanical behavior
Dislocations
Fracture
Fracture at Interfaces
Ni-Al grain boundary crack
Vacancy in Iron
CRCD Classes: ESM/MSE - 4984 & 5984
Microscale:

Lecture Topics:








Interface cracks
Anisotropy
Laminates
Free-Edge problem
Interface singularities
Ply crack singularities
Cracks homogenous:
Isotropic-Anisotropic
Wave propagation:
Isotropic-Anisotropic

Microscale 21-Modules:




Anisotropic polar plots
Cijkl Tensor glyphs
Laminated plate analysis
FEM of Free-Edge

U
V
A
G

FEM with & w/o ply crack






Woven & Nonwoven
Woven & Nonwoven
Stroh’s solution Free-Edge
Stroh’s solution Ply-Crack
Singular FEM Mode-I&II
FEM circular hole
Wave propagation 1-D / 2-D
CRCD Classes: ESM/MSE - 4984 & 5984
Macrooscale:

Lecture Topics:











Continuum 2-Modules:


U
V
A
G
Stress
Equilibrium
Strain
Material characterization
Boundary Conditions
Work External Forces
Minimum Potential Energy
Uniqueness Theorem
Axial bar deformation
Beam bending terminal couples
Stresses thick walled cylinders
Brittle-Ductile transition
CRCD Classes: ESM/MSE - 4984 & 5984
Bridging the length scales: nano-, micro-, macro-scale
U
V
A
G
Bridging the length scales:
nano-, micro-, macro-scale
Louisiana State University
Computing in Science & Engineering, “Multiscale Simulation of Nanosystems”,
A. Nakano, et al., pp 56-66, July/August 2001
U
V
A
G
Observations & Conclusions
• We have finished building over 25 educational modules on
mechanical behavior spanning the length scale from nano to
macro and taught an undergraduate and graduate class on
“Computer Simulation on Mechanical Behavior of Materials”
• A well documented User’s Guide on NPIB1.6 can now be used
by other educators and researchers to create their own modules
or improve on existing modules
• Virtual and collaborative design environments have been
at best working prototypes that are too difficult to use by
the engineering design community
• Easier to use API’s are needed so that scientists and engineers
can build their own applications based on physics and content
U
V
A
G
Recommendations & Future Work
• Because of delays in constructing the ACITC the two CRCD
classes did not fully utilize the SMVC or CAVE technologies.
These classes will be taught again with full access to facilities
and improved collaborative desktop to CAVE software.
• Continue to improve on existing modules on crack propagation
that demonstrate bridging the length scale from nano to macro.
These and other CRCD modules will be used in other ESM and
MSE classes designed for distance learning off-campus.
• Move the CRCD Web-site from the existing Sparc10 Ultra Webserver to the SGI Origin 2000 desk-side Web-server and link
NPIB simulation models to VT’s Sun E-65000, Beowulf Cluster
200 CPUs, and the new College of Engineering SGI 3400 rack.
U
V
A
G