圆柱壳振动控制中的约束阻尼拓扑优化研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (22) : 149-153.

论文

圆柱壳振动控制中的约束阻尼拓扑优化研究

窦松然，桂洪斌，李承豪，乔永亮

作者信息 +

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

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

Author information +

文章历史 +

摘要

对结构进行阻尼敷设可以有效地提高其减振效果。基于RAMP插值模型的密度法，以结构的模态损耗因子的倒数的最小化作为优化目标，以阻尼结构的体积作为约束条件，以约束阻尼单元的相对密度作为设计变量，建立约束阻尼结构的拓扑优化模型。并基于优化准则法推导了设计变量更新准则，结合有限元法，编写了约束阻尼材料的拓扑优化程序，对圆柱壳在振动控制中的约束阻尼结构进行了拓扑优化分析。分析结果表明，基于优化准则法的振动拓扑优化方法所需迭代次数少，可有效地减少结构的振动响应，验证了设计方法的有效性。

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.

导出引用

窦松然，桂洪斌，李承豪，乔永亮. 圆柱壳振动控制中的约束阻尼拓扑优化研究[J]. 振动与冲击, 2015, 34(22): 149-153

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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