In a companion paper, a method is presented to analyze the dynamic behavior of a structural system consisting of a main structure and strongly coupled, multiply connected substructures. Lagrange’s equations are used to develop a characteristic equation for connected substructures in terms of substructure impedances and mobilities. A frequency window method is used to reduce the complexity of the problem by a decomposition of the impedance and mobility functions into dominant and higher-order rational expressions. From the reduced problem, simple expressions for the modal properties are developed using matrix algebraic methods, which provide insight into the resonance characteristics of the connected substructures. Onemode windows were discussed in detail and examples were presented. In the present paper the theory is extended to multiple-mode windows.
Frequency Window Method for Strongly Coupled and Multiply Connected Structural Systems: Multiple-Mode Windows
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Min, K., Igusa, T., and Achenbach, J. D. (June 1, 1992). "Frequency Window Method for Strongly Coupled and Multiply Connected Structural Systems: Multiple-Mode Windows." ASME. J. Appl. Mech. June 1992; 59(2S): S244–S252. https://doi.org/10.1115/1.2899497
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