Practical Aspects of Perturbed Boundry Condition (PBC) Finite Element Model Updating Techniques

Paper #:
  • 971958

Published:
  • 1997-05-20
Citation:
Yang, M., Allemang, R., and Brown, D., "Practical Aspects of Perturbed Boundry Condition (PBC) Finite Element Model Updating Techniques," SAE Technical Paper 971958, 1997, https://doi.org/10.4271/971958.
Pages:
9
Abstract:
The perturbed boundary condition (PBC) model updating procedure has been developed to correct the finite element model [1]. The use of additional structural configurations adds more experimental information about the system and so better updating results can be expected. While it works well for simulated examples, practical limitations and additional requirements arise when it is used to update engineering structures. In this paper, the merits and the practical limitations of the techmques will be discussed in depth through the updating of a simulated system where the “measured” data is generated by computer and a real test structure where the experimentally measured data is noisy and distorted due to leakage. Useful suggestions and recommendations are drawn to guide the model updating of practical engineering structures.
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