This paper deals with a multi-objective optimization criterion for linear viscous-elastic device utilised for decreasing vibrations induced in mechanical and structural systems by random loads. The proposed criterion for the optimum design is the minimization of a vector objective function. The multi-objective optimization is carried out by means of a stochastic approach. The design variables are the device frequency and the damping ratio. As cases of study, two different problems are analysed: the base isolation of a rigid mass and the tuned mass damper positioned on a multi degree of freedom structural system subject to a base acceleration. The non-dominated sorting genetic algorithm in its second version (NSGA-II) is adopted to obtain the Pareto sets and the corresponding optima for different characterizations of the system and input.

Multi‐objective optimization by genetic algorithm of structural systems subject to random vibrations / Marano, Giuseppe Carlo; Quaranta, G; Greco, Rita. - In: STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION. - ISSN 1615-147X. - 39:4(2009), pp. 385-399. [10.1007/s00158-008-0330-8]

Multi‐objective optimization by genetic algorithm of structural systems subject to random vibrations

MARANO, Giuseppe Carlo;GRECO, Rita
2009-01-01

Abstract

This paper deals with a multi-objective optimization criterion for linear viscous-elastic device utilised for decreasing vibrations induced in mechanical and structural systems by random loads. The proposed criterion for the optimum design is the minimization of a vector objective function. The multi-objective optimization is carried out by means of a stochastic approach. The design variables are the device frequency and the damping ratio. As cases of study, two different problems are analysed: the base isolation of a rigid mass and the tuned mass damper positioned on a multi degree of freedom structural system subject to a base acceleration. The non-dominated sorting genetic algorithm in its second version (NSGA-II) is adopted to obtain the Pareto sets and the corresponding optima for different characterizations of the system and input.
2009
Multi‐objective optimization by genetic algorithm of structural systems subject to random vibrations / Marano, Giuseppe Carlo; Quaranta, G; Greco, Rita. - In: STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION. - ISSN 1615-147X. - 39:4(2009), pp. 385-399. [10.1007/s00158-008-0330-8]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/9817
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