The following paper focuses on same-sign stiffness cross coupling from several viewpoints. First, the influence on rotordynamics is analyzed and discussed, followed by a discussion of how past experiments measuring cross-coupled forces on rotating components may have been in error due to an incomplete testing procedure. Finally, experimental tests are presented on a partitioned damper seal and the correct and complete experimental procedure for determining cross-coupled coefficients is described.
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The Influence of Same-Sign Cross-Coupled Stiffness on Rotordynamics
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Ertas, B., and Vance, J. (June 3, 2006). "The Influence of Same-Sign Cross-Coupled Stiffness on Rotordynamics." ASME. J. Vib. Acoust. February 2007; 129(1): 24–31. https://doi.org/10.1115/1.2346690
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