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Distributed Testing at CU-NEES Using OpenFresco and SIMCOR

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Gary Haussmann. Distributed Testing at CU-NEES Using OpenFresco and SIMCOR. Outline. Distributed Testing Who\'s in charge? Issues and limitations OpenFresco In analysis In testing SIMCOR Connecting to a test site Sample Testing Configurations. Distributed Testing.

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Presentation Transcript
outline
Outline
  • Distributed Testing
    • Who\'s in charge?
    • Issues and limitations
  • OpenFresco
    • In analysis
    • In testing
  • SIMCOR
    • Connecting to a test site
  • Sample Testing Configurations

CU-NEES 2008 FHT Workshop

distributed testing
Distributed Testing
  • Physically distant sites cooperate to perform a test
  • Combine resources and equipment
  • Relevant position/force data sent over Internet

CU-NEES 2008 FHT Workshop

who s in charge
Who\'s In Charge?
  • Someone has to be “in charge”
    • Start/stop the test at a single site
    • Send requests, get data from “satellite” locations
  • Typically the primary analysis site is in charge
    • But analysis may be “subcontracted”
    • Satellite sites only perform physical manipulation

CU-NEES 2008 FHT Workshop

issues and limitations
Issues and Limitations
  • Timing of overall test
    • Typically implicit in data transfer
    • Usually not real-time (speed of light)‏
  • Software and Protocols
    • One protocol is enough
    • Software versioning
  • Check the Network
    • Firewalls, filters, can cause problems
    • Bandwidth usually not an issue

CU-NEES 2008 FHT Workshop

openfresco a summary
OpenFresco: A Summary
  • No analysis in OpenFresco
    • Mostly networking and Some Instrumentation
    • Designed to be used with analysis tool (OpenSEES etc.)‏
  • Combine various objects to achieve the behavior you want
    • Remote or local hybrid test
    • Various element types
    • Various actuator configurations

CU-NEES 2008 FHT Workshop

openfresco components
OpenFresco Components
  • Site
    • Local or Client & Server
  • Element
    • Truss, Frame, TwoNode
  • Setup
    • OneActuator or multi-DOF
    • Handles transforms
  • Control
    • Talk to your equipment

CU-NEES 2008 FHT Workshop

simcor simulation coordinator
SIMCORSimulation Coordinator
  • Built using MATLAB
    • Inherent access to MATLAB functionality
    • MATLAB-based GUI during test
  • Not analysis tool
    • Embed analysis as a module
    • ABAQUS, FE-DEAS, OpenSEES, etc.
  • Configure Modules for Various Protocols
    • LabView module
    • OpenFresco1D module
    • OpenSEES analysis module

CU-NEES 2008 FHT Workshop

simcor modules
SIMCOR Modules
  • Analysis Modules
    • ABAQUS, FE-DEAS, etc.
  • Control Modules
    • LabView
    • OpenFresco1D
    • MATLAB

CU-NEES 2008 FHT Workshop

openfresco or simcor
OpenFresco or SIMCOR?
  • Previous software experience
    • OpenSEES or TCL: OpenFresco
    • MATLAB: SIMCOR
  • Legacy analysis results
    • MATLAB: SIMCOR
    • OpenSEES: OpenFresco
    • ABAQUS, FE-DEAS: SIMCOR
  • CU NEES Site
    • Both SIMCOR and OpenFresco installed
    • OpenFresco controller “default”
    • Access with either tool

CU-NEES 2008 FHT Workshop

a series of tests
A Series of Tests
  • Perform tests of ever-increasing complexity
  • Local-only with simulated specimen
  • Local-only with actual specimen
  • Distributed with simulated specimen(s)‏
  • Distributed with actual specimen(s)‏

CU-NEES 2008 FHT Workshop

local only test
Local-Only Test
  • “Server” and “Client” are the same machine
  • Use a fake specimen with SimUniaxialMaterial

CU-NEES 2008 FHT Workshop

local only hybrid test
Local-Only Hybrid Test
  • Client/Server on Same Machine
  • Live Actuator Movement

CU-NEES 2008 FHT Workshop

distributed dry run
Distributed Dry Run
  • Analysis at one site, specimen at another
  • Specimen is simulated with SimUniaxialMaterial

CU-NEES 2008 FHT Workshop

distributed hybrid test
Distributed Hybrid Test
  • Multi-site
  • Live Actuators
  • UIUC, SIMCOR
  • Berkeley, OpenFresco

CU-NEES 2008 FHT Workshop

multi site testing
Multi-Site Testing
  • Three sites
  • CU, LeHigh, U. of Connecticut
  • U-Conn performs analysis
  • CU, LeHigh drive “specimens”

CU-NEES 2008 FHT Workshop

multi site testing1
Multi-Site Testing
  • U-Conn runs OpenSEES 1.7.4/OpenFresco 2.5 client
  • CU runs OpenFresco/xPC Module server
  • LeHigh run OpenFresco/SCRAMnet Module server
  • Network Transfer and Campus Firewalls
    • Manually open a port via paperwork
    • Find an open port to use

CU-NEES 2008 FHT Workshop

multi site testing2
Multi-Site Testing
  • Test Results
  • Two Specimen Errors

CU-NEES 2008 FHT Workshop

conclusion
Conclusion
  • Use OpenFresco or SIMCOR for distributed Hybrid Tests
  • CU-NEES Support Distributed Tests via OpenFresco Server
  • Testing Process
    • Start simple, local
    • Check network connections
    • Switch to live specimens

CU-NEES 2008 FHT Workshop

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