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Practical Aspects of Perturbed Boundry Condition (PBC) Finite Element Model Updating Techniques
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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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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.Also In
References
- Yang, M. Brown D.L. “Model Updating Techniques Using Perturbed Boundary Condition (PBC) Testing Data,” Proceedings of the 14th International Modal Analysis Conference 776 782 1996
- Lammens, S. Brughmans M. Leuridan J. Sas P. “Updating of Dynamic Finite Element Models Based on Experimental Receptances and the Reduced Analytical Dynamic Stiffness Matrix,” Proceedings of 1995 SAE N&V Conference Traverse City, MI 117 126 1995
- Yang, M. Brown D.L. “An Improved Procedure for Handling Damping During Finite Element Model Updating,” Proceedings of the 14th International Modal Analysis Conference 576 584 1996
- Yang, M. Brown D.L. “SVD/QR Based Model Error Indicator Function,” Proceedings of the 15th International Modal Analysis Conference Orlando, FL Feb. 1996