Experimental and Computational Investigations on Fixture Interference for BARC Systems

Abstract

For most dynamical systems, there is much uncertainty for boundary conditions between experiments, simulations, and service environments. The Box Assembly with Removable Component attempts to investigate these uncertainties to provide a higher degree of certainty in replicating service environment fixtures. This study investigates the previous nonuniformities in the literature between numerical simulations and experimental testing for the dynamical system and fixture interface. The common experimental setup is to attach the system directly to the fixture, allowing for heavy contact between the system and the fixture that corrupts the results. In this work, the experimental results are carried out by adding a spacer between these contact points to provide tests that better match numerical simulations and show the mismatch for past studies in the literature.KeywordsBox Assembly with Removable Component (BARC)Vibration fixtureModal analysisFixture interferenceExperimental testing