Journal
COMPOSITE STRUCTURES
Volume 132, Issue -, Pages 885-897Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2015.06.076
Keywords
Optimal design; Damping; Composite materials; Lamination parameters; Differential evolution
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The present paper deals with the damping characteristics of symmetrically laminated plates. First, the effect of laminate configuration on the damping characteristics is investigated for cantilevered laminated plates. To examine the effect of laminate configuration, the concept of specific damping capacity is introduced and the damping characteristics are represented on the lamination parameter plane, where the damped stiffness invariants are newly proposed in this paper. Next, the optimal laminate configurations for the cantilevered laminated plates with maximal damping subjected to the constraints on the natural frequencies are determined by using differential evolution in which lamination parameters are used as intermediate design variables. The relation between the laminate configurations and the damping characteristics is discussed based on the concept of lamination parameters. (C) 2015 Elsevier Ltd. All rights reserved.
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