Modeling system dynamic coupling in powertrain-like structures

Ren Pan, Teik C. Lim, Keith A. Hollman, Rodney C. Glover, David S. Totten

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


The feasibility of applying a dynamic sub-structuring approach to model and analyze the vibration response of critical automotive components in its coupled vehicle state is examined using an idealized beam-flange-plate system. The beam-flange component is regarded as the primary component of interest while the plate is assumed to be the base structure. Both modal and spectral-based formulations are considered, which account for the true dynamic coupling/interaction between the component of interest and base structure. For the modal-based sub-structuring approach, a unique modeling scheme that utilizes a set of multi-point constraint equations for representing the transformation matrix between the modal coordinates of the base structure and the physical coordinates of the primary component is applied. On the other hand, the spectral-based approach relies on the frequency response functions of the base structure directly to predict the overall system response spectra. The former method is generally found to work well in systems with lightly damped, well-separated resonances, while the latter one can be used to analyze structures with higher modal density and damping characteristics.

Original languageEnglish (US)
JournalSAE Technical Papers
StatePublished - 2001
Externally publishedYes
EventNoise and Vibration Conference and Exposition - Traverse City, MI, United States
Duration: Apr 30 2001May 3 2001

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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