NASA NTRS · 19710000411
Frame modal analysis
Abstract
Computer model calculates natural frequencies and modal displacements of three-dimensional frame structures, and generates stiffness and mass matrices. Structures may be divided into several substructures prior to calculation of modal characteristics.
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Guyan, R. J., Heckenlaible, R. N.. 1971-11-01. Frame modal analysis. https://ntrs.nasa.gov/citations/19710000411
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