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An Improved Method for Parametric Model Order Reduction by Matrix Interpolation

  • Ying Liu
  • Huanyu Du
  • Hongguang LiEmail author
  • Fucai Li
  • Wei Sun
Original Paper
  • 6 Downloads

Abstract

Background

Parametric model order reduction (PMOR) can effectively reduce analysis time and memory cost for finite element models. However, the calculation precision of the previous methods is not usually high enough.

Purpose

In this paper, an improved method is presented to approximate parametric models with higher accuracy.

Method

First of all, Krylov subspace projection-based method generally adopted in model order reduction (MOR) is introduced. Based on that, the method to adjust the local reduced-order models (ROMs) is described briefly. Then an approach to interpolate the compatible ROMs on the tangent space is presented in detail and the calculation flow chart for parametric model order reduction (PMOR) of finite element models is provided.

Results and Conclusion

In the end, the analysis results for the moving coil of electrical-dynamic shaker demonstrate that the generated parameterized ROM can approximate the direct ROM with higher fidelity than the original method.

Keywords

Parametric model order reduction Interpolation Matrix manifolds Complex model Electrical-dynamic shaker 

Notes

Acknowledgements

This project is supported by National Natural Science Foundation of China (Grant no. 11427801).

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Copyright information

© Krishtel eMaging Solutions Private Limited 2019

Authors and Affiliations

  • Ying Liu
    • 1
  • Huanyu Du
    • 1
  • Hongguang Li
    • 1
    Email author
  • Fucai Li
    • 1
  • Wei Sun
    • 2
  1. 1.Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghaiChina
  2. 2.School of Mechanical Engineering and AutomationNortheastern UniversityShenyangChina

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