Mode localization in multi-span beamsThe influence of numerous effects on mode localization in multi-span beams is investigated. Finite-element methods are used to study localization as a function of: Timoshenko beam effects; beam end conditions; span length, mass, and stiffness imperfection; viscous damping; axial force; transverse support and rotational coupling stiffness; and modeling resolution. Three configurations are studied, commencing with two different two-span models, and culminating in a ten-span configuration resembling lattice-type large space structures. Results indicate that, in addition to the ratio of imperfection to coupling stiffness being an important localization parameter, transverse support stiffness and Timoshenko beam effects greatly affect the tendency of a structure to exhibit localized modes.
Document ID
19900039743
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lust, S. D. (California Univ. Los Angeles, CA, United States)
Friedmann, P. P. (California Univ. Los Angeles, CA, United States)
Bendiksen, O. O. (California, University Los Angeles, United States)