Computational Structures Technology
Chapter 8 M.A. Ramos Loja+, C.M. Mota Soares* and C.A. Mota Soares*
+Nautical School Infante D. Henrique, Paço de Arcos, Portugal *Institute of Mechanical Engineering, Instituto Superior Técnico, Lisbon, Portugal Keywords: b-spline strip method, piezoelectric materials, simulated annealing, third-order plate theory. In this work, recent developments on the use of the general spline finite strip method in the analysis and optimal design of laminated structures with embedded and/or surface bonded piezoelectric actuators and sensors are presented. The finite strip models are developed using the third-order plate theory of Lo et al. [1], and Reddy [2]. They are applied to the static and free vibration analyses of laminated adaptive structures with arbitrary lay-ups, loading and boundary conditions. As a special case of the third-order plate theory the simpler and computational efficient strip finite element model based on the first-order shear deformation theory is obtained. These models are combined with a stochastic global optimization technique called ``simulated annealing" [3] to improve the performance of the composite adaptive structures subjected to a variety of objective functions and/or constraints and with discrete and continuous design variables. The capabilities of these models are illustrated by two examples of simple adaptive structures. References
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