COLLABORATIVE OPTIMIZATION ON REDUCING STRUCTURAL VIBRATION
HUANG hai-yan1,WANG De-yu2
1 School of naval architecture and ocean engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China2 School of naval architecture, ocean and civil engineering, Shanghai Jiao Tong University, Shanghai 200030, China
Abstract：This paper presents a collaborative optimization (CO) strategy on reducing vibration of engineering structure. Different objective functions in various subsystem-level optimization models are used. In system-level optimization model, a new objective function is advised to minimize relative deviation value between the collaborative objective function and single disciplinary objective function. And it eliminates the effect of different dimensions and the order of magnitudes among objectives. The proposed CO architecture enables multi-objectives of the system and subsystem-level’s to be considered at both levels during optimization. A bi-level optimization strategy is advised. The proposed optimization and strategy are demonstrated with two examples. One of them is a reducer optimization problem, and another is a mixed structure which is made up of pillar, beam and plate. The results of examples show that the proposed CO model is feasible and reliable, and can not only effectively decrease the dynamic responses of engineering structure, but also the final structure has better global properties.
2009, Vol. 28 
