Research of topological optimization for constrained damping in vibration control of cylindrical shell

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (22) : 149-153.

DOU Song-ran，GUI Hong-bin，LI Cheng-hao，QIAO Yong-liang

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Abstract

Structures with damping have a better performance in reducing vibration. Based on density approach with RAMP interpolation model, the topologic model of constrained damping structure was studied with the minimum of reciprocal of modal loss factors as target function, the volume of damping structure as constraint condition, and the relative density of constrained damping element as design variable. The updating criterion of design variables was derived based on optimal criteria method. And the topologic optimization program was developed with finite element method. The topological optimization for constrained damping structure in vibration control of cylindrical shell was studied. The analysis shows that topologic optimization method with optimal criteria method needs less number of iteration and reduces the vibration response of structure effectively, which indicates the validity of the design approach.

Key words

topologic optimization / RAMP interpolation / density approach / optimal criteria method / constrained damping / finite element

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DOU Song-ran，GUI Hong-bin，LI Cheng-hao，QIAO Yong-liang . Research of topological optimization for constrained damping in vibration control of cylindrical shell[J]. Journal of Vibration and Shock, 2015, 34(22): 149-153

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