Dynamic Characteristics of Blade with Viscoelastic Damping Block Based on Complex Eigenvalue Method
Joint Authors
Han, Qingkai
Wang, Jiao
Zhang, Yue-hao
Yu, Tao
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-05
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
A novel method for vibration suppression is proposed, adding a viscoelastic damping block to the root of the blade.
The dynamical equation for a rotational viscoelastic damping block-blade (VE-blade) in a centrifugal force field and aerodynamic force field is established to calculate the dynamical natural frequency and responses of the VE-blade.
Complex modulus model is applied to represent the constitutive law of viscoelastic material and shear force acting on the VE-blade formulates the effect of viscoelastic damping at the root interfaces.
The dynamical equation of the system is established and the Galerkin method is used to discretize the partial differential equations to a 3-DOF system so as to compute the dynamic natural frequencies and responses of the VE-blade.
Then the differential equations of motion with 3-DOF are numerically solved by using complex eigenvalue method.
A cantilever VE-blade is simplified according to testing the first three natural frequencies of the real blade to obtain geometric parameters of cantilever beam.
The effects of various parameters including thickness, storage modulus, loss factor of viscoelastic damping block, and rotating speed on natural frequency and modal damping ratio of VE-blade are discussed in detail.
American Psychological Association (APA)
Wang, Jiao& Zhang, Yue-hao& Yu, Tao& Han, Qingkai. 2018. Dynamic Characteristics of Blade with Viscoelastic Damping Block Based on Complex Eigenvalue Method. Shock and Vibration،Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215299
Modern Language Association (MLA)
Wang, Jiao…[et al.]. Dynamic Characteristics of Blade with Viscoelastic Damping Block Based on Complex Eigenvalue Method. Shock and Vibration No. 2018 (2018), pp.1-16.
https://search.emarefa.net/detail/BIM-1215299
American Medical Association (AMA)
Wang, Jiao& Zhang, Yue-hao& Yu, Tao& Han, Qingkai. Dynamic Characteristics of Blade with Viscoelastic Damping Block Based on Complex Eigenvalue Method. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215299
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215299