SCHOOL OF INFORMATION UNIVERSITY OF MICHIGAN NEESgrid: The national collaboratory for earthquake engineering Thomas A. Finholt School of Information University.

SCHOOL OF INFORMATION UNIVERSITY OF MICHIGAN

NEESgrid: The national collaboratory for earthquake engineering

Thomas A. FinholtSchool of InformationUniversity of Michigan


Outline The field of earthquake engineering

The George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES)

NEESgrid – cyberinfrastructure for earthquake engineers

Challenges and prospects


The field of earthquake engineering


Bhuj, India. One of the towers of this apartment complex totally collapsed,and the central stairway leaned on another building of the complex.

Photo courtesy of Dr. J.P. Bardet, University of Southern Californiahttp://geoinfo.usc.edu/gees/RecentEQ/India_Gujarat/Report/Damage/Bhuj/Bardet_Feb18.html


The earthquake engineering community

Research– University-based– Funded by NSF and industry– Focus on simulation

• Physical models (e.g., reduced scale specimens)• Numerical models (e.g., finite element analysis)

Practice– Professional firms– Structural engineering (e.g., earthquake remediation)– Formulation of uniform building codes– Lifelines (e.g., ensure survival of roads, gaslines,

power distribution)


Shake table: Nevada, Reno


Reaction wall: Minnesota


Centrifuge: UC Davis


Wave basin: Oregon State


The George E. Brown, Jr. Network for Earthquake Engineering

Simulation (NEES)


George E. Brown, Jr. Network for Earthquake Engineering Simulation NSF Major Research Equipment and Facility

Construction award (MRE) $82 million, 2001-04

– $10 million for system integration (NCSA, ANL, USC-ISI, Michigan, Oklahoma)

– $2 million for consortium development (CUREE)– $60 million for new equipment sites

• 3 shake tables (Buffalo, Nevada-Reno, UCSD)• 2 centrifuges (RPI, UC Davis)• 5 reaction walls (Berkeley, Buffalo, Colorado, Illinois, Lehigh,

Minnesota)• 3 field test (Texas, UCSB/USC/BYU, UCLA)• 1 lifeline (Cornell)• 1 tsunami (Oregon State)


http://nees.org/EQ/sites/images/RPI-A72.tif

http://nees.org/EQ/sites/images/OSU_96c.jpg


NEESgrid – cyberinfrastructure for earthquake engineers


The Atkins report: A brief summary

Nothing tends so much to the advancement of knowledge as the application of a new instrument.

Sir Humphrey Davy

Quotation source: Thomas Hager, Force of Nature, Simon and Schuster, New York, 1995, p 86Image source: Sir Thomas Lawrence, circa 1821, National Portrait Gallery, London


Researchers

DataFacilities

Synchronized dataSynchronized data and imagesData discovery

Automatic archivingSimulation codesHybrid experiments

TeleoperationTeleobservation

Synchronous communicationAsynchronous communication

All via high-performance

networks


Technology involved Telecontrol and data transmission (USC ISI and ANL)

– NTCP– Globus/OGSI

Collaboration services (Michigan)– CHEF/Sakai

Telepresence systems (ANL) Electronic lab notebook (ANL, PNNL) Data and metadata

– Data repository (NCSA)– Project browser (Michigan)– Metadata description (Stanford, USC)

Numerical simulation (UCB, Mississippi State) Deployment, operations, and support (NCSA) Videoconferencing (Internet2 Commons) Prototyping (Washington University)


NEESgrid interface

gx

Multi-Site, On-Line Simulation Test (MOST)July 2003

UIUC

Experimental Model

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f1

m1

NCSA Computational Model

m1

f1f2 f2

Colorado

Experimental Model

gx

SAC Consortium Benchmark Structure

Multi-Site, On-Line Simulation Test (MOST)

ColoradoColoradoExperimental Model

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F2

F1

e

gx

=

gx

f1, x1

UIUCUIUC Experimental Model

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NCSANCSA

Computational Model

SIMULATIONSIMULATION

COORDINATORCOORDINATOR

NEESpop NEESpop

NEESpop

UIUC MUST-SIM•Dan Abrams•Amr Elnashai•Dan Kuchma•Bill Spencer• and othersColorado FHT•Benson Shing•and others


MOST Column Test Specimens

Illinois Test Specimen

Colorado Test Specimen


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UIUC

Colorado

MOST participants over time (CDT)Start time Sever reboot

800 steps in viewer

Test completed


Post-experiment rating of MOST success (n=22)

2

12

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1 1

0

5

10

15

Very success ful Success ful Neutral Unsuccess ful Veryunsuccess ful

NEES MCU Usage

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200

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Feb

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Michigan / USC

Total

Use of H.323 videoconferencing

UNR Demob c d

a = initial ES-TF meeting; b = ES-TF meeting time changed; c = succession to new ES-TF chair; d = change to biweekly ES-TF meetings

a NSF LAN meetings


Challenges and prospects


Challenges Costs incurred by developers are often borne

by users– Generalized solutions can be too heavy

Inertia– Research practices evolve more slowly than

technologies

Cultural conflicts– Engineering perspectives VS. computer science

perspectives


Prospects

Attempts to apply new technology are often framed in terms of familiar technology

First efforts are often awkward hybrids

It is hard to know where the seeds of greatness might lie...

Source: American Automobile Manufacturers Association, http://www.automuseum.com/carhistory.html

Charles King’s “horseless carriage” (1896) Detroit, Michigan


Relevant URLs

neesgrid.org

nees.org

www.scienceofcollaboratories.org

crew.umich.edu

si.umich.edu

SCHOOL OF INFORMATION UNIVERSITY OF MICHIGAN NEESgrid: The national collaboratory for earthquake engineering Thomas A. Finholt School of Information University.

Documents

minnesota slide

reno slide

london slide

earthquake engineering

uc davis slide

power distribution slide

tsunami oregon state

simulation physical