Original scientific paper

STRUCTURAL STIFFNESS OPTIMIZATION WITH RESPECT TO VIBRATION RESPONSE

Marko Jokić ; Faculty of Mechanical Engineering, University of Zagreb, Zagreb, Croatia
Milenko Stegić ; Faculty of Mechanical Engineering, University of Zagreb, Zagreb, Croatia
Nenad Kranjčević ; Faculty of Mechanical Engineering, University of Zagreb, Zagreb, Croatia

Abstract

This paper presents a novel technique for structural stiffness optimization with respect to vibration response. Assuming the regularity of the structure mass matrix and the asymptotic stability of the state space system representing the structure, optimization criteria are defined in terms of the H∞ norm of the system. In doing so, a special structure of system matrices is utilized to eliminate some of optimization variables. To overcome the high computational cost of the algorithm and make it applicable for optimization of large-scale structures, a novel reduced-order optimization algorithm is proposed. A numerical example which clearly illustrates the applicability and efficiency of the proposed optimization procedure is presented.

Keywords

vibration control; nonlinear optimization; bearing stiffness

Hrčak ID:

89195

URI

https://hrcak.srce.hr/89195

Publication date:

10.7.2012.

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