Modelling the nonlinear behaviour of an underplatform damper test rig for turbine applications
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- 作者：L. Pesaresia ; luca.pesaresi12@imperial.ac.uk" class="auth_mail" title="E-mail the corresponding author ; L. Sallesa ; A. Jonesb ; J.S. Greenb ; C.W. Schwingshackla
- 关键词：Damper model ; Friction damping ; Turbine blade vibrations ; Nonlinear dynamics ; Bladed discs ; Passive control
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2017
- 出版时间：15 February 2017
- 年：2017
- 卷：85
- 期：Complete
- 页码：662-679
- 全文大小：3138 K
文摘
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Double blade underplatform damper test rig for turbine applications.
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Nondimensional parameters defined to mimic the dynamics of a real turbine blade.
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Advanced modelling approach based on an FE explicit model of the damper and a dense grid of 3D friction contact elements.
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New insights into the required contact pressure distribution accuracy and harmonics required for correct predictions.
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Experimentally validated UPD modelling approach achieved.