DOMINANT DYNAMIC CHARACTERISTICS OF BUILT-UP STRUCTURES

An approach for evaluating the dominant dynamic characteristics of built-up structures is presented. Based on a division of substructures and couplings into two groups, primary and subordinate, the approach is established by treating the members of the former group as precisely as possible, whereas the descriptions of those in the latter group are simplified substantially. Two generic built-up structures are discussed to illustrate how the approach promotes the understanding of the dynamic behaviour of built-up structures and also to illustrate its application. A corroboration of the applicability is provided from comparisons with the measured response of a shell–beam–plate structure.