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CU-NEES

VIEWS: 1 PAGES: 19

									     Distributed Testing at CU-NEES
     Using OpenFresco and SIMCOR


                Gary Haussmann


                                                                             NEES at CU1
                                                                                       Boulder
                                                                              01000110 01001000 01010100
Feb. 19, 2008    CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                        Outline
• Distributed Testing
     – Who's in charge?
     – Issues and limitations
• OpenFresco
     – In analysis
     – In testing
• SIMCOR
     – Connecting to a test site
• Sample Testing Configurations
                                                                                 NEES at CU2
                                                                                           Boulder
                                                                                  01000110 01001000 01010100
Feb. 19, 2008        CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Distributed Testing
• Physically distant
  sites cooperate to
  perform a test
• Combine
  resources and
  equipment
• Relevant
  position/force data
  sent over Internet
                                                                                NEES at CU3
                                                                                          Boulder
                                                                                 01000110 01001000 01010100
Feb. 19, 2008       CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                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
                                                                                NEES at CU4
                                                                                          Boulder
                                                                                 01000110 01001000 01010100
Feb. 19, 2008       CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                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
                                                                                  NEES at CU5
                                                                                            Boulder
                                                                                   01000110 01001000 01010100
Feb. 19, 2008         CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
           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                                          NEES at CU6
                                                                                          Boulder
                                                                                 01000110 01001000 01010100
Feb. 19, 2008       CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
           OpenFresco Components
• Site
     – Local or Client & Server
• Element
     – Truss, Frame, TwoNode
• Setup
     – OneActuator or multi-DOF
     – Handles transforms
• Control
     – Talk to your equipment
                                                                                 NEES at CU7
                                                                                           Boulder
                                                                                  01000110 01001000 01010100
Feb. 19, 2008        CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                  SIMCOR
            Simulation 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

                                                                                NEES at CU8
                                                                                          Boulder
                                                                                 01000110 01001000 01010100
Feb. 19, 2008       CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                SIMCOR Modules
• Analysis Modules
     – ABAQUS, FE-DEAS, etc.
                          SIMCOR Process


• Control Modules
     – LabView
                                                LabView
                                                                                                  LabView
                                                Module




     – OpenFresco1D
     – MATLAB
                             SIMCOR            OpenFresco                                        OpenFresco
                            Integration          Module                                            Server




                                                FE-DEAS                                           FE-DEAS
                                                 Module                                           Instance




                                                                                    NEES at CU9
                                                                                              Boulder
                                                                                     01000110 01001000 01010100
Feb. 19, 2008      CU-NEES 2008 FHT Workshop        The George E Brown, Jr. Network for Earthquake Engineering Simulation
          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
                                                                                       10
                                                                              NEES at CU Boulder
                                                                               01000110 01001000 01010100
Feb. 19, 2008     CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                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)




                                                                                        11
                                                                               NEES at CU Boulder
                                                                                01000110 01001000 01010100
Feb. 19, 2008      CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Local-Only Test
• “Server” and “Client” are the same
  machine
• Use a fake specimen with
  SimUniaxialMaterial




                                                                                       12
                                                                              NEES at CU Boulder
                                                                               01000110 01001000 01010100
Feb. 19, 2008     CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Local-Only Hybrid Test
• Client/Server on Same Machine
• Live Actuator Movement




                                                                                           13
                                                                                  NEES at CU Boulder
                                                                                   01000110 01001000 01010100
Feb. 19, 2008         CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Distributed Dry Run
• Analysis at one site, specimen at another
• Specimen is simulated with
  SimUniaxialMaterial




                                                                                         14
                                                                                NEES at CU Boulder
                                                                                 01000110 01001000 01010100
Feb. 19, 2008       CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Distributed Hybrid Test
• Multi-site
• Live
  Actuators
• UIUC,
  SIMCOR
• Berkeley,
  OpenFresco




                                                                                           15
                                                                                  NEES at CU Boulder
                                                                                   01000110 01001000 01010100
Feb. 19, 2008         CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Multi-Site Testing
• Three sites
• CU, LeHigh, U.
  of Connecticut
• U-Conn performs
  analysis
• CU, LeHigh drive
  “specimens”


                                                                                        16
                                                                               NEES at CU Boulder
                                                                                01000110 01001000 01010100
Feb. 19, 2008      CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                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
                                                                                        17
                                                                               NEES at CU Boulder
                                                                                01000110 01001000 01010100
Feb. 19, 2008      CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                Multi-Site Testing
• Test Results
• Two Specimen Errors




                                                                                        18
                                                                               NEES at CU Boulder
                                                                                01000110 01001000 01010100
Feb. 19, 2008      CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation
                  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

                                                                                        19
                                                                               NEES at CU Boulder
                                                                                01000110 01001000 01010100
Feb. 19, 2008      CU-NEES 2008 FHT Workshop   The George E Brown, Jr. Network for Earthquake Engineering Simulation

								
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