The system parameter uncertainties are investigated using the stochastic finite element method (SFEM) for mid-frequency range vibration. The feasibility and development of a general purpose probabilistic framework with its application to large-scale built-up systems are demonstrated. The approach overcomes the need to determine the joint statistics of natural frequencies and made shapes by avoiding the modal superposition approach.

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Conference 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and Exhibit Technical Papers
Sarkar, A. (A.), & Ghanem, R. (R.). (2001). Mid-frequency structural dynamics with parameter uncertainty. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (pp. 2037–2046).