Friction damping and forced-response of vibrating structures: An insight into model validation

• Published in: International journal of solids and structures Vol. 202; pp. 521 - 531
• Main Authors: Umer, Muhammad, Gastaldi, Chiara, Botto, Daniele
• Format: Journal Article
• Language: English
• Published: New York Elsevier Ltd 01.10.2020; Elsevier BV
• Subjects: Adequacy; Contact force; Contact force measurement; Dampers; Damping; Dry friction; Dynamic response; Fatigue failure; Fatigue tests; Friction; Friction damping; High cycle fatigue; Nonlinear dynamics; Test equipment; Test rig; Turbine blade vibrations; Turbomachinery; Under-platform damper; Nonlinear dynamics; Contact force measurement; Friction damping; Test rig; Under-platform damper; Turbine blade vibrations

Dry friction is widely incorporated in turbomachinery, in the form of under-platform dampers, to limit vibrations at resonance and reduce risks of high-cycle fatigue failures. Most of the test rigs that were used to investigate the behavior of under-platform dampers aim at evaluating the damper perf...