摘要
针对振动系统中阻尼器位置及参数优化问题,采用分步优化的策略,在考虑阻尼器自身重量的影响下,通过对结构动态性能分析,建立基于模态损耗因子的阻尼器位置优化模型。结合该优化模型,并以结构关键部位处的位移响应幅值平方最小为准则,得到相应安装位置上的阻尼器参数。以桁架结构与挂架为例,进行数值仿真验证,结果表明该方法可有效用于工程结构的振动控制。
The damping placement and parameter optimization design for vibrating systems was done using me step oy step optimization method. The placement sensitivity of the modal loss factor of the general damped structure was investigated. The mathematical model for optimization of dampers＇ placements was established, and the optimal placements of the dampers were searched based on the analysis of the placement sensitivity of the modal loss factor. The weight of the damper and the damping coefficient were considered as the main object. The objective function was found using the norm of the minimum dynamic response. The numerical calculation and analysis were carried out for a true system and a shell structure, and the parameter optimization of the damper in the known best position was obtained. The results show that the new approach is of important significance in control of the dynamic performance of structures.
出处
《噪声与振动控制》
CSCD
2013年第2期15-18,81,共5页
Noise and Vibration Control
基金
国家"十二五科技支撑计划"(2011BAD003B01-03)
河南工业大学高层次人才资助项目(2011BS021)
郑州市科技攻关项目的资助121PPTGG386-5
