Feb. 19, 2008 CU-NEES 2008 FHT Workshop 1 Distributed Testing at CU-NEES Using OpenFresco and SIMCOR Gary Haussmann

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 2 Outline Distributed Testing –Who's in charge? –Issues and limitations OpenFresco –In analysis –In testing SIMCOR –Connecting to a test site Sample Testing Configurations

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 3 Distributed Testing Physically distant sites cooperate to perform a test Combine resources and equipment Relevant position/force data sent over Internet

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 4 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

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 5 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

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 6 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

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 7 OpenFresco Components Site –Local or Client & Server Element –Truss, Frame, TwoNode Setup –OneActuator or multi-DOF –Handles transforms Control –Talk to your equipment

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 8 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

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 9 SIMCOR Modules Analysis Modules –ABAQUS, FE-DEAS, etc. Control Modules –LabView –OpenFresco1D –MATLAB

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 10 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

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 11 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)‏

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 12 Local-Only Test “Server” and “Client” are the same machine Use a fake specimen with SimUniaxialMaterial

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 13 Local-Only Hybrid Test Client/Server on Same Machine Live Actuator Movement

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 14 Distributed Dry Run Analysis at one site, specimen at another Specimen is simulated with SimUniaxialMaterial

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 15 Distributed Hybrid Test Multi-site Live Actuators UIUC, SIMCOR Berkeley, OpenFresco

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 16 Multi-Site Testing Three sites CU, LeHigh, U. of Connecticut U-Conn performs analysis CU, LeHigh drive “specimens”

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 17 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

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 18 Multi-Site Testing Test Results Two Specimen Errors

Feb. 19, 2008 CU-NEES 2008 FHT Workshop 19 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