绣山讲坛第411讲-Vibration suppression and energy transfer analysis of frictional jointed beams with inerter-based dynamic vibration absorber
作者： 已浏览：17次 更新日期：2025-12-27
报告题目：Vibration suppression and energy transfer analysis of frictional jointed beams with inerter-based dynamic vibration absorber
报告时间：2025年12月29日，星期一，上午10:00 AM
报告地点：龙赛理科楼南楼519会议室
主讲人：Dr Baiyang Shi，School of Engineering, University of the West of England
摘要：
This study examines the efficacy of an inerter-based dynamic vibration absorber (IDVA) in mitigating vibrations and energy transfer within frictional jointed beam structures. The talk begins by introducing typical nonlinearities encountered in two-degree-of-freedom systems, including cubic stiffness, friction, impact, and piecewise-linear stiffness and damping. Subsequently, a nonlinearly jointed beam model is presented. The governing equations of motion for the beam structures are discretized using the finite element method and subsequently transformed into sec on d-order ordinary differential equations via the Galerkin method. Analytical and numerical investigations are conducted using the harmonic balance method with alternating frequency/time (HB-AFT) and the Runge-Kutta method. The findings show that the IDVA exhibits superior vibration suppression performance compared to conventional absorbers. Additionally, the attachment position of the IDVA is shown to significantly influence the dynamic response and energy transmission characteristics of the beam structure.
主讲人简介：
Dr Baiyang Shi is a Lecturer in Control at the University of the West of England (UWE), Bristol, UK. He obtained his PhD in Mechanical Engineering from the University of Nottingham (2020), an MSc in Advanced Aeronautical Engineering from Imperial College London (2016), and a BEng (Hons) in Mechanical Engineering from the University of Nottingham Ningbo China (2015). Prior to joining UWE, he was a Visiting Assistant Professor at the University of Nottingham Ningbo China from 2020 to 2022. His research focuses on nonlinear dynamics, vibration control, and uncertainty quantification in complex dynamical systems with \over 30 publications in leading journals and conferences.
