J. Glob. Power Propuls. Soc. 2017
DOI: 10.22261/5d19rh
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On the choice of contact parameters for the forced response calculation of a bladed disk with underplatform dampers

Abstract: Underplatform dampers (UPDs) are still in use to reduce the vibration amplitude of turbine blades and to shift the position of resonant frequencies. The dynamics of blades with UPDs is nonlinear and the analysis is challenging from both the experimental and the numerical point of view. A key point in obtaining a predictive numerical tool is the choice of the correct contact parameters (contact stiffness and friction coefficient) that are required as input to the contact model. The paper presents different appr… Show more

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Cited by 4 publications
(1 citation statement)
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“…8.5 N/μm vs. 30 N/μm for a 8 mm long contact). These predictions have been successfully validated both at damper [37] and at FRF level [34]. A possible explanation for this repeatable difference resides in the kinematics of the contact.…”
Section: Remark On Rolling Nonconforming Contactsmentioning
confidence: 67%
“…8.5 N/μm vs. 30 N/μm for a 8 mm long contact). These predictions have been successfully validated both at damper [37] and at FRF level [34]. A possible explanation for this repeatable difference resides in the kinematics of the contact.…”
Section: Remark On Rolling Nonconforming Contactsmentioning
confidence: 67%