SPP 1897:  Calm, Smooth and Smart - Novel Approaches for Influencing Vibrations by Means of Deliberately Introduced Dissipation

• Subject Area: Mechanical and Industrial Engineering
• Term: from 2016 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 273845692

Over the last few years, the concept of lightweight design has become more and more important in engineering. Herein, it is the aim to reduce the mass of any kind of technical structure to a minimum in order to save resources, costs and energy during both manufacturing and operation. Following the rules of this design principle often also means to make technical components and, thus, the overall system more sensitive to unwanted vibrations. These vibrations can cause severe environmental and health issues, and are, hence, to be minimized. Within the framework of the priority programme entitled “Calm, Smooth and Smart – Novel Approaches for Influencing Vibrations by Means of Deliberately Introduced Dissipation” (SPP 1897), this yet inevitable dependence shall now be eliminated by developing novel approaches for influencing structural vibrations, leading to a “calm, smooth and smart” behaviour of technical products. In the here proposed second funding period, the focus of the projects will be on specific novel damping devices and novel applications based on the results from the first funding period. The priority programme will continue to drive research towards several directions concerning dissipation mechanisms and damping strategies. It will be dealt with the systematic investigation of dissipative mechanisms and subsequent development of mathematical models used to describe them. Further, the definition, analysis and validation of novel damping techniques, as well as their effects on structural vibrations will be a topic. Another focus is led on the development of numerical methods that allow to model dissipation and damping devices in an engineering-compliant environment. The integration of submodels describing new kinds of damping-based vibration absorbers and of corresponding model order reduction techniques into the overall models of vehicles, machines and facilities is another aspect of the programme. Further, it will be dealt with the experimental investigation of the influences of damping mechanisms and devices on the characteristics of an overall system’s dynamics.The aims of the coordinator’s activities is to assist to pool the expertise of mechanics, mathematics, control engineering, tribology, fluid mechanics and material science in Germany, and to create new and strengthen already available networks in order to achieve the set goals of the overall programme.In the proposal it is described in detail which funds are requested for this purpose and which activities are planned.

• DFG Programme: Priority Programmes
• International Connection: Netherlands

Projects

• A combined numerical-experimental approach for the damping evaluation of nonlinear dissipative vibration systems (Applicants Panning-von Scheidt, Lars ;  Tatzko, Sebastian )
• Acoustic Black Holes in components for mobile applications realized by optimal material alignments (Applicant Langer, Sabine C. )
• Calming Vibrational Systems by Optimized Placement of Novel Situation-Aware Frictional Damper Elements (Applicant Fidlin, Alexander )
• Complex-Shaped Lightweight Structures with Adaptive Dynamic Behaviour through Evanescent Morphing (Applicant Kostka, Pawel )
• Coordination Funds (Applicant Eberhard, Peter )
• Deliberate introduction of acoustic radiation damping using locally resonant materials (Applicant Marburg, Steffen )
• Field-Responsive Fluid Based Multi-Degree-of-Freedom Dampers for Independently Adjustable Dissipation - Second Period (Applicant Sattel, Thomas )
• Granular mixtures with tailored damping properties (Applicant Steeb, Holger )
• HyCEML - Hybrid CFRP/ elastomer/ metal laminates containing elastomeric interfaces for deliberate dissipation (Applicants Kärger, Luise ;  Weidenmann, Kay A. )
• Nonlinear time series analysis using Bayesian recurrence plot quantification to analyse the dynamics of friction-induced vibrations, in particular wear and damping in artificial synovial joints. (Applicant Oberst, Sebastian )
• Numerical and experimental optimization of local visco-elastic damping layer placements for design of calm, smart and smooth structures (Applicants Lohmann, Boris ;  Rixen, Daniel J. )
• Particle Dampers – Vibration Modification by Distributed Dissipation originating from Complex Particle Shapes and Fluid/Solid Interactions (Applicant Eberhard, Peter )
• Shape Memory Alloy Film Damping for Smart Miniature Systems (Applicants Kohl, Manfred ;  Wendler, Frank )
• Simulation-based Design of Calm Hybrid Particle Dampers with Application to Flexible Multibody Systems (Applicant Seifried, Robert )
• Smart Inductive Arrays to Efficiently Calm Structural Vibrations (Applicant Hetzler, Hartmut )
• Structure-Preserving Model Reduction for Dissipative Mechanical Systems (Applicants Benner, Peter ;  Reis, Timo ;  Voigt, Matthias )
• Suppressing brake vibrations by deliberately introduced damping (Applicants Mehrmann, Volker ;  von Wagner, Utz )
• Understanding and improving energy dissipation and vibration damping in structures subject to self-excited irregular vibrations – linking data driven approaches with modelling (Applicant Hoffmann, Norbert )
• Vibration reduction by energy transfer using shape adaption (Applicants Hasse, Alexander ;  Willner, Kai )

• Spokesperson: Professor Dr.-Ing. Peter Eberhard