Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/4293
Título: Design of New Materials for Passive Vibration Control
Autor: Lopes, Tiago
Dimitrovová, Zuzana
Faria, Luís
Rodrigues, Helder C.
Palavras-chave: cellular materials design, passive vibration control, non-linear visco-elastic
Data: 16-Nov-2010
Resumo: The objective of this contribution is to extend the models of cellular/composite material design to nonlinear material behaviour and apply them for design of materials for passive vibration control. As a first step a computational tool allowing determination of optimised one-dimensional isolator behaviour was developed. This model can serve as a representation for idealised macroscopic behaviour. Optimal isolator behaviour to a given set of loads is obtained by generic probabilistic metaalgorithm, simulated annealing. Cost functional involves minimization of maximum response amplitude in a set of predefined time intervals and maximization of total energy absorbed in the first loop. Dependence of the global optimum on several combinations of leading parameters of the simulated annealing procedure, like neighbourhood definition and annealing schedule, is also studied and analyzed. Obtained results facilitate the design of elastomeric cellular materials with improved behaviour in terms of dynamic stiffness for passive vibration control.
URI: http://hdl.handle.net/10362/4293
ISBN: 978-1-905088-23-2
Aparece nas colecções:FCT: DEC - Documentos de conferências internacionais

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