Abstract
The hybrid finite-element analysis combines conventional finite-element analysis with energy finite-element analysis for midfrequency computations. A hybrid FEA fomulation has been published for systems with excitation applied on long members. [N. Vlahopoulos and X. Zhao, ‘‘A Basic Development of a Hybrid Finite Element Method for Mid-Frequency Computations of Structural Vibrations,’’ AIAA J. 37(11), 1495–1505 (1999).] In this presentation, theoretical developments associated with applying the excitation on short members will be discussed. Validation cases will be presented for several systems by comparing analytical solutions to hybrid FEA results. It will be demonstrated that the resonant behavior of the short members and the interaction between long and short members are captured correctly by the hybrid FEA. [Work supported by the Automotive Research Center established at the University of Michigan by the US Army Tank Automotive Command.]
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