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Finite Element Modelling of Dynamic Contact Application for Blade Root Damping Estimation

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Computational Mechanics ’86

Summary

The problem of estimation of root-damping due to stick-slip in turbine blade vibration is addressed. Two-dimensional static and dynamic Finite Element approaches have been employed. An efficient static condensation technique is used for quasistatic analysis and the solution is obtained by performing a few iterations for the determination of unknown contact zone and forces. The method has been extended for the dynamic contact problem wherein an implicit time marching procedure using Wilson-θ method is employed. The efficient condensation and reduction technique considerably enhances the computational performance of the algorithm. Detailed parametric studies are reported for the damping behaviour of the blade root junction.

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References

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Author information

Authors and Affiliations

  1. Department of Applied Mechanics, Indian Institute of Technology, New Delhi, 110016, India

    C. V. Ramakrishnan

  2. Department of Mechanical Engineering, Aligarh Muslim University, Aligarh, U.P., India

    M. A. W. Usmani

Authors
  1. C. V. Ramakrishnan
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  2. M. A. W. Usmani
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Editor information

Editors and Affiliations

  1. Department of Nuclear Engineering, The University of Tokyo, 3-1, Hongo 7-chome, Bunkyo-ku, Tokyo 113, Japan

    Genki Yagawa

  2. Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, 225, North Avenue, Atlanta, GA, 30332, USA

    Satya N. Atluri

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© 1986 Springer Japan

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Ramakrishnan, C.V., Usmani, M.A.W. (1986). Finite Element Modelling of Dynamic Contact Application for Blade Root Damping Estimation. In: Yagawa, G., Atluri, S.N. (eds) Computational Mechanics ’86. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68042-0_51

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  • DOI: https://doi.org/10.1007/978-4-431-68042-0_51

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68044-4

  • Online ISBN: 978-4-431-68042-0

  • eBook Packages: Springer Book Archive

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