Optimization for vibro-impact nonlinear energy sink under randomexcitation  

作　　者：Jiamin Qian Lincong Chen 

机构地区：[1]College of Civil Engineering,Huaqiao University,Xiamen 361021,China [2]Key Laboratory for Intelligent Infrastructure and Monitoring of Fujian Province,Huaqiao University,Jimei Avenue 668,Xiamen,Fujian,361021,China

出　　处：《Theoretical & Applied Mechanics Letters》2022年第5期322-325,共4页力学快报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China(No.12072118);the National Natural Science Funds for Distinguished Young Scholar of the Fujian Province of China(No.2021J06024);the Project for Youth Innovation Fund of Xiamen(No.3502Z20206005).

摘　　要：As a promising vibration control device, the vibro-impact nonlinear energy sink (VI-NES) gathered extensively attention in recent years. However, general optimization procedures have not been available forthe design of VI-NES subjected to random excitations. To this end, this paper constitutes a research effortto address this gap. Specifically, the approximate analytical solution of the system stochastic responseis obtained in conjunction with non-smooth conversion and stochastic averaging methodology. Takingadvantages of this approximate solution, the variance of the system is defined and easily minimized tocalculate the optimal parameters for VI-NES. In addition, the results computed by this way fairly correlatewith direct numeric simulations.

关 键 词：Vibration control Vibro-impact NES Stochastic averaging OPTIMIZATION 

分 类 号：O32[理学—一般力学与力学基础]