Optimal design of periodic piezocomposites

摘要: Abstract Application of piezoelectric materials, such as hydrophones and naval sonars, requires an improvement in their performance characteristics. This can be obtained by designing new types piezocomposite materials that possess a richer class properties. The effective properties composite material depend on the topology its unit cell (or microstructure) constituents. By changing topology, better characteristics piezocomposite. In this work, we have extended optimal design method microstructures proposed previous work [1] to three dimensional (3D) topologies, considering static applications hydrophones. uses optimization techniques homogenization theory, consists finding distribution void phases periodic optimizes problem is subjected constraints property symmetry stiffness. An additional constraint was added order penalize amount intermediate densities generated final design. optimized solution using Sequential Linear Programming (SLP). calculate with complex general applied piezoelectricity implemented finite element (FEM). has no limitations regarding volume fraction or shape main assumption periodicity cell. Microstructures show large compared pure simple designs cells. Finally, hydrophone made one layer cells microstructure suggested. FEM analysis done evaluate transducer.