Author, Institution: Ribal El Banna, Kaunas University of Technology
Science area, field of science: Technological Sciences, Transport Engineering, T003
Research supervisor: Prof. Dr. Sigitas Kilikevičius (Kaunas University of Technology, Technological Sciences, Transport Engineering, T003)
Dissertation Defence Board of Transport Engineering Science Field:
Prof. Dr. Laurencas Raslavičius (Kaunas University of Technology, Technological Sciences, Transport Engineering, T003) – chairperson
Prof. Dr. Hab. Marijonas Bogdevičius (Vilnius Gediminas Technical University, Technological Sciences, Transport Engineering, T003)
Prof. Dr. Jan Furch (University of Defence, Czech Republic, Technological Sciences, Transport Engineering, T003)
Prof. Dr. Giedrius Janušas (Kaunas University of Technology, Technological Sciences, Mechanical Engineering, T009)
Prof. Dr. Artūras Keršys (Kaunas University of Technology, Technological Sciences, Transport Engineering, T003)
Dissertation defence meeting will be at Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73-402, Kaunas)
The doctoral dissertation is available at the library of Kaunas University of Technology (Gedimino 50, Kaunas) and on the internet: R. El Banna el. dissertation.pdf
© R. El. Banna, 2026 “The text of the thesis may not be copied, distributed, published, made public, including by making it publicly available on computer networks (Internet), reproduced in any form or by any means, including, but not limited to, electronic, mechanical or other means. Pursuant to Article 25(1) of the Law on Copyright and Related Rights of the Republic of Lithuania, a person with a disability who has difficulties in reading a document of a thesis published on the Internet, and insofar as this is justified by a particular disability, shall request that the document be made available in an alternative form by e-mail to doktorantura@ktu.lt.”
Annotation: In this dissertation, a method for vibratory transport on inclined and horizontal harmonically oscillating planes is proposed, based on the periodic dynamic control of dry friction. The method creates a controlled asymmetry of frictional conditions within each oscillation cycle, generating a net frictional force sufficient to overcome the tangential component of gravity and drive particles upwards on an inclined plane, while also enabling controlled directional motion on a plane subjected to harmonic circular motion for omnidirectional transport. Mathematical models were developed to analyse the control parameters that define the transportation characteristics of an object on horizontal and inclined planes. Theoretical, computational, and experimental research demonstrated that precise control of both the speed and direction of object motion can be achieved by appropriately adjusting key parameters governing frictional properties, such as the phase shift between the dry friction control function and the harmonic oscillations, and the width of the phase interval over which friction is modified. The experimental results provided both qualitative and quantitative validation of the models, showing that the motion parameters exhibit comparable responses to the control parameters and are in strong agreement with the modelling results. These findings demonstrate the practical applicability of the proposed method for microparticle and granular material transport in bidirectional conveying, feeding, and buffering systems, as well as omnidirectional transport for microassembly and manipulation of delicate components.