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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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Distributed Testing at CU-NEES Using OpenFresco and SIMCOR

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Gary haussmann

Gary Haussmann

Distributed Testing at CU-NEESUsing OpenFresco and SIMCOR

CU-NEES 2008 FHT Workshop


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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