Post on 31-Dec-2015
description
Grid Based Distributed Hybrid Testing
Mobin Ojaghi, Javier Parra-Fuente, Kashif Saleem,
Anthony Blakeborough, Martin S. Williams.
Department of Engineering Science, University of Oxford.
Paper 798 11.9.07
Theme
Grid technology applied to earthquake engineering testing to facilitate distributed hybrid testing.
UK-NEES (UK Network for Earthquake Engineering Testing)
Overview Earthquakes and earthquake engineering testing Hybrid testing Pseudo-dynamic and fast/real time hybrid testing Distributed hybrid testing NEES and UK-NEES Proposed architecture Grid architecture example Future work Related work
Earthquakes
Sumatra
Earthquake and
Tsunami of 2004
Kobe 1995
Northridge 1994
Earthquake Engineering Testing
Large scale
Numerical
Hybrid
pseudo-dynamic
fast/real time
Distributed hybrid testing
Large Scale Testing
Hybrid Testing
NEES
NEES Partnership with National and International Initiatives
UK-NEES
Tele-observation
Tele-participation
Tele-operation
Distributed hybrid testing
On-line data access
UK-NEES Components
Hybrid TestingNode
Hybrid TestingNode
Grid ServicesGrid Services
NTOP ServerNTOP Server
Grid PortalGrid Portal
User InterfaceUser Interface
Simmulation Programs
Simmulation Programs
Video ServerVideo Server
DataAcquisition
DataAcquisition
Collaboratione-mail, VTC, web pages
Collaboratione-mail, VTC, web pages
Local Video Processor(Internet Appliance)
Local Video Processor(Internet Appliance)
RemoteCollaborator
RemoteInvestigator
NEESPOP
Tele-Presence and Video Servers
(live)Video Streams
Data
NEES Equipment
Local Storage
Video
Video
Video
Data
Cameras
Equipment Specialist
(live)Data
Data and Video
Collaboration Services
Operation and Control lines
Hybrid TestingNode
Hybrid TestingNode
Grid ServicesGrid Services
NTOP ServerNTOP Server
Grid PortalGrid Portal
User InterfaceUser Interface
Simmulation Programs
Simmulation Programs
Video ServerVideo Server
DataAcquisition
DataAcquisition
Collaboratione-mail, VTC, web pages
Collaboratione-mail, VTC, web pages
Local Video Processor(Internet Appliance)
Local Video Processor(Internet Appliance)
RemoteCollaborator
RemoteInvestigator
NEESPOP
Tele-Presence and Video Servers
(live)Video Streams
Data
NEES Equipment
Local Storage
Video
Video
Video
Data
Cameras
Equipment Specialist
(live)Data
Data and Video
Collaboration Services
Operation and Control lines
NEES Equipment: Test Specimen, actuators, sensors, hydraulic controls, etc.
Data Acquisition System (DAQ): Acquires data from research Equipment.
NEES “Point of Presence” (NEES POP): Provides a home for NEES grid services at the equipment site.
Hybrid Testing Node: Synchronizes and runs the geographically distributed hybrid tests.
Distributed Hybrid Test Architecture
Physical Model Node Architecture
Structure of a 5-floor Building Set Up for Hybrid Testing
No
de
1
Node 3
Node 2
Numerical substructurePhysical substructure
Earthquake
No
de
1
Node 3
Node 2N
od
e 1
Node 3
Node 2
Numerical substructurePhysical substructure
Numerical substructurePhysical substructure
Earthquake
Data Simulation of Physical Component
vsignumvcF
Nonlinear Viscous Damper
Hybrid Testing Architecture Developed
Response from 5th Floor to El-Centro NS Earthquake
Storey drift is directly related to damage
Future Work
Distributed Hybrid Testing Architecture
Related Work
Grid technology in related projects
US-NEES
NZ-NEES
JST (Japanese Science and Technology)
International Solid Earthquake Research Virtual Observatory (ISERVO)
Conclusions Grid architecture allows expensive physical
equipment located in different sites to work together to develop bigger distributed simulations, much larger than could be carried out due to cost and space limitations in any one lab.
UK-NEES is the first grid network to be created in the UK to enable distributed hybrid testing. The grid architecture shown enables connection of heterogeneous hardware platforms at different nodes and user friendly software will allow viewing and participation in testing offering a smooth running solution for collaborative distributed testing.