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The University of Southampton
Engineering

Recent Developments of the Network Synthesis Theory for Passive Vibration Control Seminar

Time:
16:00
Date:
16 May 2017
Venue:
Building 13 room 3017

For more information regarding this seminar, please email Rameen Mustafa at R.Mustafa@soton.ac.uk .

Event details

Engineering and the Environment seminar

Linear passive vibration absorbers, such as tuned mass dampers, often contain springs, dampers and masses. Although recently there has been a growing trend to employ or supplement the mass elements with inerters, which is a relatively new component that offers a step change in the performance of passive vibration suppression systems by fundamentally enhancing the systems’ achievable dynamic properties. When considering possible vibration suppression configurations with springs, dampers and inerters, two approaches are normally used, one structure-based and one immittance-based. The structure-based approach has the limitation that, despite having countless possible network layouts, only one layout can be covered by each analysis. The immittance-based approach is far more systematic. However, relevant network synthesis techniques need to be developed to enable the network configurations that can provide optimum performance to be identified. In this talk, the basic concept of inerter and its successful application in the racing industry will be reviewed. Consequently, recent developments of the network synthesis theory, and how these results are used in the identification of beneficial configurations for vibration absorbers will be explained in detail. Example mechanical structures include multi-storey buildings, road & railway vehicles, landing gears and cables.

Speaker information

Jason Zheng Jiang , University of Bristol. Dr Jiang received the Bsc and Msc degrees from Shanghai Jiao Tong University, and the PhD degree from the University of Cambridge. He has been a Research Associate at the Control Group, University of Cambridge before joining the Mechanical Engineering department, University of Bristol as a lecturer. His research focuses on mechanical & electrical network synthesis with emphasis on vibration suppression applications and the design and modelling of inerters. He is currently supervising 7 PhD students in this area and holds an EPSRC grant on developing fluid inerters (EP/P013546/1). He was recently awarded the IMechE best paper prize for his work on developing a novel railway vehicle suspension system.

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