Nonlinear velocity compensation for effective force testing

J. Zhao, Catherine E French, Carol K Shield, Thomas A Posbergh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


The use of velocity feedback correction with phase compensation for successful implementation of effective force testing (EFT) is discussed. The flow to be compensated is determined as the product of the actuator piston area and the measured velocity of the piston or the structure to which it is attached. The servovalve should be sized such that its maximum spool opening during the test is within 80% of its full capacity. The results suggest that velocity response spectra can be used to estimate the required maximum spool opening for a specific structure tested for a specific earthquake ground acceleration record.

Original languageEnglish (US)
Title of host publicationProceedings of the 2003 ASCE/SEI Structures Congress and Exposition
Subtitle of host publicationEngineering Smarter
EditorsL.N. Lowes, G.R. Miller
Number of pages5
StatePublished - Dec 1 2003
Event2003 ASCE/SEI Structures Congress and Exposition: Engineering Smarter - Seattle, WA, United States
Duration: May 29 2003May 31 2003


Other2003 ASCE/SEI Structures Congress and Exposition: Engineering Smarter
Country/TerritoryUnited States
CitySeattle, WA


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