Design of Multifunctional Truss-Like Periodic Materials Using a Global-Local Optimization Method
Porous materials have gained wide use in high level engineering structures due to their high stiffness/weight ratio, good energy absorption properties, etc. Frequently, thermal behavior is also an issue of concern and optimized multifunctional thermo-mechanical responses are sought for. This paper presents the application of a hybrid two-stage method for achieving an optimized layout of periodic truss-like structures in order to obtain a good compromise between thermal and mechanical elastic properties. The first stage employs a derivative free optimization method, which explores the design space, not getting trapped by local minima. The second stage uses a derivative based optimization algorithm to perform a refinement of the solution obtained in the first stage.
Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado
P. A. Muñoz-Rojas et al., "Design of Multifunctional Truss-Like Periodic Materials Using a Global-Local Optimization Method", Defect and Diffusion Forum, Vols. 312-315, pp. 1073-1078, 2011