Journal of Mechanical Science and Technology

, Volume 32, Issue 12, pp 5831–5838 | Cite as

A dynamic substructuring-based parametric reduced-order model considering the interpolation of free-interface substructural modes

  • Jaehun LeeEmail author


A parametric reduced-order model (PROM) was developed by using a free-interface coupling method. For dynamic substructuring, the accuracy of the free-interface assembly is generally higher than that of the fixed interface one in a low frequency range, since it considers free-interface normal modes and rigid-body modes of each substructures. Therefore, by using the free-interface coupling method, we can enhance the accuracy of the PROM developed previously, in particular, the one formulated with a primal assembly. One important characteristic to retain the efficiency of PROM in the free-interface assembly is that the interpolation of substructural modes should be discriminated considering the characteristics of the modes. In the present work, we newly suggest a strategy for interpolating free-interface mode according to the change of parameter values. To verify the accuracy of the proposed PROM, we investigated the accuracy of the eigenvalues with a high-dimensional parametric input space.


Component mode synthesis Free-interface assembly Dynamic substructuring Interpolation Parametric reduced-order model 


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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mechanical EngineeringKyungnam UniversityChangwonKorea

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