Passive reduced-order models for interconnect simulation and their computation via Krylov-subspace algorithms

2003 ◽  
Author(s):  
R.W. Freund
Keyword(s):  
Krylov Subspace ◽  
Reduced Order Models ◽  
Reduced Order ◽  
Subspace Algorithms

scholarly journals Thermomechanical Model Reduction for Efficient Simulations of Rotor-Stator Contact Interaction

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
Nicolas Guérin ◽  
Anders Thorin ◽  
Fabrice Thouverez ◽  
Mathias Legrand ◽  
Patricio Almeida
Keyword(s):  
Krylov Subspace ◽  
Frictional Contact ◽  
Recent Literature ◽  
Unilateral Contact ◽  
Reduction Technique ◽  
Thermomechanical Coupling ◽  
Reduced Order Models ◽  
Thermomechanical Model ◽  
Reduced Order ◽  
Prediction Tools

Turbomachinery rotor–stator unilateral contact induced interactions play a growing role in lifecycle analysis and thus motivate the use of accurate numerical prediction tools. Recent literature confirmed by ongoing in-house experiments have shown the importance of thermomechanical coupling effects in such interactions. However, most available (possibly reduced-order) models are restricted to the sole mechanical aspects. This work describes a reduction technique of thermomechanical models involving unilateral contact and frictional contact occurrences between rotor and stator components. The proposed methodology is grounded on Guyan and Craig–Bampton methods for the reduction of the structural dynamics in conjunction with Krylov subspace techniques, and specifically the Craig–Hale approach, for the reduction of the thermal equations. The method has the capability to drastically reduce the size of the model while preserving accuracy. It stands as a reliable strategy to perform simulations of thermomechanical models with localized mechanical and thermal loads.

scholarly journals Thermomechanical Model Reduction for Efficient Simulations of Rotor-Stator Contact Interaction

2018 ◽  
Author(s):  
Nicolas Guérin ◽  
Anders Thorin ◽  
Fabrice Thouverez ◽  
Mathias Legrand ◽  
Patricio Almeida
Keyword(s):  
Krylov Subspace ◽  
Frictional Contact ◽  
Recent Literature ◽  
Unilateral Contact ◽  
Reduction Technique ◽  
Thermomechanical Coupling ◽  
Reduced Order Models ◽  
Thermomechanical Model ◽  
Reduced Order ◽  
Prediction Tools

Turbomachinery rotor-stator unilateral contact induced interactions play a growing role in lifecycle analysis and thus motivate the use of accurate numerical prediction tools. Recent literature confirmed by ongoing in-house experiments have shown the importance of thermomechanical coupling effects in such interactions. However, most available (possibly reduced-order) models are restricted to the sole mechanical aspects. This work describes a reduction technique of thermomechanical models involving unilateral contact and frictional contact occurrences between rotor and stator components. The proposed methodology is grounded on Guyan and Craig–Bampton methods for the reduction of the structural dynamics in conjunction with Krylov subspace techniques, and specifically the Craig–Hale approach, for the reduction of the thermal equations. The method has the capability to drastically reduce the size of the model while preserving accuracy. It stands as a reliable strategy to perform simulations of thermomechanical models with localized mechanical and thermal loads.

Reduced-order models of structures with viscoelastic components

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 1318-1325 ◽  
Author(s):  
Michael I. Friswell ◽  
Daniel J. Inman
Keyword(s):  
Reduced Order Models ◽  
Reduced Order
Sign in / Sign up

Export Citation Format

Share Document