Demonstrating vibration control of lightweight structures by adjustable impedance elements

Start Page
51
End Page
60
Citation
36th Symposium Design for X, DFX 2025
Contribution to Conference
36th Symposium Design for X, DFX 2025  
Publisher DOI
10.35199/dfx2025.06
The mechanical interface properties between a lightweight structure and its surroundings are a key factor in vibration reduction. This paper demonstrates the principle of vibration reduction in lightweight structures by using Adjustable Impedance Elements (AIEs). AIEs enable the interface stiffness and damping to be adjusted over a wide range. Parameter studies are conducted to identify promising combinations of interface stiffness and damping using FEM. With optimal settings of the AIE a vibration reduction of 63% compared to a rigid interface is reached. However, the vibration response is effectively decreased only within a limited frequency range. Thus, the need for dynamically adaptive interface properties is deduced.
Subjects
Vibration Testing
Vibration Reduction
Adjustable Impedance Elements (AIE)
Parameterized FEM
Lightweight Structures
DDC Class
620: Engineering
Funding(s)
Dynamisch adaptive Impedanzelemente zur Schwingungsbeeinflussung in Validierungsumgebungen  
Funding Organisations
Deutsche Forschungsgemeinschaft (DFG)  
More Funding Information
This research is part of the project DynaVal and was funded by the Deutsche
Forschungsgemeinschaft (DFG, German Research Foundation) — project number
530564503