- Volume 38 Issue 9
DOI QR Code
Comparison of Projection-Based Model Order Reduction for Frequency Responses
주파수응답에 대한 투영기반 모델차수축소법의 비교
- Won, Bo Reum (Coastal Development and Ocean Energy Research Division, KIOST) ;
- Han, Jeong Sam (Dept. of Mechanical Design Engineering, Andong Nat'l Univ.)
- Received : 2014.02.24
- Accepted : 2014.07.25
- Published : 2014.09.01
This paper provides a comparison between the Krylov subspace method (KSM) and modal truncation method (MTM), which are typical projection-based model order reduction methods. The frequency responses are compared to determine the numerical accuracies and efficiencies. In order to compare the numerical accuracies of the KSM and MTM, the frequency responses and relative errors according to the order of the reduced model and frequency of interest are studied. Subsequently, a numerical examination shows whether a reduced order can be determined automatically with the help of an error convergence indicator. As for the numerical efficiency, the computation time needed to generate the projection matrix and the solution time to perform a frequency response analysis are compared according to the reduced order. A finite element model for a car suspension is considered as an application example of the numerical comparison.
Supported by : 안동대학교
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