Structural and Multidisciplinary Optimization

, Volume 34, Issue 2, pp 139–149

Reduction of vibration level in rotordynamics by design optimization

Research Paper

DOI: 10.1007/s00158-006-0065-3

Cite this article as:
Strauß, F., Inagaki, M. & Starke, J. Struct Multidisc Optim (2007) 34: 139. doi:10.1007/s00158-006-0065-3

Abstract

We focus on the reduction of the vibration level of rotors by optimizing the shape of the body. The target is to reduce rotor weight and rotor vibrations leading to higher efficiency and less noise. We consider a finite element discretization of the rotor using a Rayleigh beam model which includes rotary inertia and gyroscopic moments leading to nonself-adjoint systems. We present a general algebraic framework for this case. The mass function is the objective function of the optimization problem and constraints are set on the nonlinear and nonconvex functions of critical speed and unbalanced response. For the numerical solution, algorithms belonging to the class of sequential convex programming are applied for the example of a turbocharger. A remarkable reduction of mass of an initially given prototype could be achieved while significantly reducing the unbalanced response and raising the critical speeds.

Keywords

Rotating machinery Gyroscopic systems Vibration level Shape optimization Sequential convex programming 

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  1. 1.Institute of Applied MathematicsUniversity of HeidelbergHeidelbergGermany
  2. 2.Computing CenterUniversity of KarlsruheKarlsruheGermany
  3. 3.Toyota Central R&D Labs., Inc.NagakuteJapan
  4. 4.Department of MathematicsTechnical University of DenmarkKongens LyngbyDenmark

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