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CLC number: O32

On-line Access: 2007-12-14

Received: 2007-06-07

Revision Accepted: 2007-09-11

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.1 P.15-25


Reliability based multiobjective optimization for design of structures subject to random vibrations

Author(s):  Giuseppe Carlo MARANO

Affiliation(s):  Department of Environmental Engineering and Sustainable Development, Technical University of Bari, viale del Turismo, 10-74100, Taranto, Italy

Corresponding email(s):   gmarano@poliba.it

Key Words:  Structural optimization, Multiobjective optimization (MOO), Random vibration, Tuned mass damper (TMD)

Giuseppe Carlo MARANO. Reliability based multiobjective optimization for design of structures subject to random vibrations[J]. Journal of Zhejiang University Science A, 2008, 9(1): 15-25.

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T1 - Reliability based multiobjective optimization for design of structures subject to random vibrations
A1 - Giuseppe Carlo MARANO
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A072128

Based on a multiobjective approach whose objective function (OF) vector collects stochastic reliability performance and structural cost indices, a structural optimization criterion for mechanical systems subject to random vibrations is presented for supporting engineer’s design. This criterion differs from the most commonly used conventional optimum design criterion for random vibrating structure, which is based on minimizing displacement or acceleration variance of main structure responses, without considering explicitly required performances against failure. The proposed criterion can properly take into account the design-reliability required performances, and it becomes a more efficient support for structural engineering decision making. The multiobjective optimum (MOO) design of a tuned mass damper (TMD) has been developed in a typical seismic design problem, to control structural vibration induced on a multi-storey building structure excited by nonstationary base acceleration random process. A numerical example for a three-storey building is developed and a sensitivity analysis is carried out. The results are shown in a useful manner for TMD design decision support.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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