Konstruktion und Methodenentwicklung einer Gleitlagerprüfkonfiguration zur Bewertung von Start-Stopp Verschleiß von LKW-Prüflagern sowie Notlaufeigenschaften von PKW-Prüflagern

Plain bearings are machine elements used in numerous mechanical systems. They enable low-friction support of rotating shafts while offering high load-carrying capacity and a compact design. Due to increasing demands on efficiency, there is interest in experimental investigations of the tribological behavior of these bearings in order to further improve their performance. This thesis deals with the development, design, and mechanical implementation of a modular test configuration for the investigation of start-stop wear in heavy-duty truck plain bearings as well as seizure behavior in regular car bearings. The objective was to design a flexible test setup capable of examining real bearing geometries of different sizes under reproducible and adjustable operating conditions. First, the tribological and design fundamentals of plain bearings as well as existing test methods and test rigs are presented. Based on these considerations, the functional and design requirements for the newly developed test setup are derived. These include, in particular, high test loads, variable bearing geometries, start-stop operation, seizure testing, and defined thermal boundary conditions. Based on a systematic design methodology, various concept variants for load application, bearing support, and cooling are developed and evaluated. The selected overall concept is then implemented in a 3D CAD model. To ensure the structural suitability of the test setup, a FEM simulation is carried out to determine its torsional stiffness. Finally, the implementation of the test setup is presented. This work provides the basis for tribological investigations of plain bearings under reproducible laboratory conditions using bearing geometries that reflect real world applications.