Software & Development Tools
The power density of fast moving machines such as turbines, compressors, transmissions or electric engines increases continuously and leads to heightened requirements on the construction and materials of bearings. Reliably forecasting the decisive parameters of sliding bearings such as maximum temperature, maximum pressure, minimum lubricating gap height, power loss, oil throughput as well as rigidity and dampening is crucial in order to construct high performance plain bearings. To be able to validate development tools, it is essential to perform tests on a test stand. In a large joint project, the Research Association for Drive Technology (FVA) and Research Association for Combustion Engines (FVV) together with 19 industrial companies planned and constructed such a high performance plain bearings test stand. The test stand made it possible to conduct tribological and flow mechanics tests as well as to investigate the rotor dynamic properties of highly loaded plain bearings at high circumferential speeds of up to 200 m/s and is one of the most modern in the world.
» The industrial joint research has made possible a high performance plain bearings test stand that is unique worldwide. With its help, important properties of high speed plain bearings can be investigated. «
Plain bearings are components in many machines such as turbines, compressors, transmissions and electric engines, for example.
The high performance plain bearings test stand at the TU Clausthal is unique worldwide and enables tests to be conducted even at extremely high circumferential speeds.
Overview of the high performance plain bearings test stand.
Plain bearings are indispensable for high speed machines such as turbines, compressors, transmissions or electric engines. In order to properly construct high performance plain bearings it is essential to be able to reliably forecast decisive parameters such as maximal temperature, maximal pressure, minimum lubricating gap height, performance loss, oil throughput as well as rigidity and dampening. That is why the design and simulation processes that are used must be continuously improved. In order to be able to verify development work tools, investigations on a test stand are mostly indispensible.
The test stand components necessary for the tests, including the static and dynamic load devices, measurements, controlling as well as technology for logging and processing data, were designed and constructed at the Institute. The construction of the test stand – at least in the sensitive area in and around the rotor – also took place at the Institute. The test stand costs around 1.8 million Euros. The construction of the test stand occurred in three stages: Stage 1 for radial bearings at multiaxial load, meaning for testing up to the highest circumferential speeds; Stage 2 for the testing of single and double acting axial bearings; and Stage 3 for combine radial axial bearings, meaning hydrostatic jacking.
The test stand made it possible to conduct tests on the tribological and flow mechanical properties as well as rotor dynamic properties of highly loaded plain bearings at extremely high circumferential speeds of up to 200 m/s and is one of the world's most modern test stands. A special highlight is the measurement technology, costing 120,000 Euros, which despite extreme speeds is capable of keeping up with the turning rotating shaft and detecting the distance of the rotors to the bearing through the use of inductive sensors. With these characteristics, the high performance plain bearings test stand is one of the most powerful in the world. The test stand makes a contribution to German manufacturers and service providers in the turbo, transmissions and electrical engineering being able to retain their international competitiveness.
High-performancePlain Bearings Test Rig | Develop a high performance plain bearings test for determining tribological parameters at high loads and maximum circumferential speeds | Project No. 924
2006-09-06 to 2011-12-31
Dr.-Ing. Morched Medhioub
Dipl.-Ing. Albert Schmitz
Institute of Tribology and Energy Conversion Machinery (ITR) | TU Clausthal
Head of research:
Prof. Dr.-Ing. Hubert Schwarze
Dr.-Ing. Hardwig Blumenthal
Research Association for Combustion Engines eV
Lyoner Strasse 18
60528 Frankfurt am Main
T +49 69 6603 1345