Untersuchung und Anwendung komplexer, nichtlinearer, dynamischer Zustände in reiberregten mechanischen Systemen


Project Title
Exploring and exploiting complex nonlinear dynamical states in friction-excited mechanical systems
 
Funding Code
PA 3303/1-1
 
 
Principal Investigator
Papangelo, Antonio
 
Status
Abgeschlossen
 
Duration
01-01-2019
-
31-12-2020
 
GEPRIS-ID
 
 
Project Abstract
FIV represent a major problem in different industrial applications, from the automotive to the aerospace engineering. Despite the great effort that has been invested in the recent years FIV are still defined "random", "low repeatable", "capricious". The recent advances in numerical and theoretical modelling of FIV show that friction affected dynamical systems may experience a multitude of dynamical states, in particular spatially localized vibrating states, stick-slip/full-slip propagating fronts and stick-slip pulses. The role that those transitory states play in the development of FIV has been often neglected in the literature, which, instead, has focused mostly on the stationary, global behaviour of frictional systems. We propose to study in detail the phenomenon of spatial localization of FIV and their propagation at the interface as stick-slip fronts or pulses. The experimental observed “randomness”, in fact, may be caused by our lack of understanding of how frictional systems evolve during the transients through different transitory states. We will focus on friction-excited discrete regular structures. The first two objectives and workpackages aim at studying and characterizing the localized and the propagating states in terms of region of existence, stability, velocity of propagation, sensitivity to system parameters and to the friction law. The third objective and corresponding workpackage aim at exploiting the observed nonlinear states. We will focus on the possibility of selecting the proper dynamical state to obtain the desired friction coefficient and dissipative behaviour. This "first-time" proposal is for the applicant a unique opportunity to start a more independent research and broaden his knowledge in friction-excited dynamical systems working in the Dynamics Group at TUHH. His background in contact mechanics and non-linear dynamics will be of crucial importance to face this challenging project.
 

Publications
(All)

Results 1-8 of 8

Issue DateTitleTypeAuthor(s)
1Dec-2020Electroadhesive sphere-flat contact problem: A comparison between DMT and full iterative finite element solutionsArticlePapangelo, Antonio ; Lovino, R. ; Ciavarella, Michele 
24-Sep-2020Fulltext availableOpen AccessA numerical study on roughness-induced adhesion enhancement in a sphere with an axisymmetric sinusoidal waviness using Lennard-Jones interaction lawArticlePapangelo, Antonio ; Ciavarella, Michele 
3Feb-2020The effect of wear on ThermoElastic Instabilities (TEI) in bimaterial interfacesArticlePapangelo, Antonio ; Ciavarella, Michele 
426-Sep-2019Fulltext availableOpen AccessA discussion on present theories of rubber friction, with particular reference to different possible choices of arbitrary roughness cutoff parametersArticleGenovese, Andrea ; Farroni, Flavio ; Papangelo, Antonio ; Ciavarella, Michele 
55-Aug-2019Fulltext availableOpen AccessReconstruction of governing equations from vibration measurements for geometrically nonlinear systemsArticleDidonna, Marco ; Stender, Merten  ; Papangelo, Antonio ; Fontanela, Filipe ; Ciavarella, Michele ; Hoffmann, Norbert  
630-May-2019Shear-induced contact area anisotropy explained by a fracture mechanics modelArticlePapangelo, Antonio ; Scheibert, J. ; Sahli, R. ; Pallares, G. ; Ciavarella, Michele 
73-Feb-2019Multistability and localization in forced cyclic symmetric structures modelled by weakly-coupled Duffing oscillatorsArticlePapangelo, Antonio ; Fontanela, Filipe ; Grolet, Aurélien ; Ciavarella, Michele ; Hoffmann, Norbert  
82019Fulltext availableOpen AccessOn adhesive theories in multilayered interfaces, with particular regard to "surface force apparatus" geometryArticleTricarico, Michele ; Papangelo, Antonio ; Constantinescu, Andrei ; Ciavarella, Michele