Influence of Wear on the Behavior of a Two-Lobe Hydrodynamic Journal Bearing Subjected to Numerous Startups and Stops

摘要: The behavior of the hydrodynamic journal bearings is now very well known because many experimental and numerical studies that have been carried out on topic. This interest in two-lobe due to fact their simplicity, efficiency low cost led them being widely used industry. These mechanical components tend be subjected numerous start-ups stops. During transient periods, direct contact between bearing induces high friction lubricated hence wear lining. aim this work is, firstly, present data obtained a lobed starts Then, comparison made measured performance results, these assumption regime thermohydrodynamic (THD) one. after more than 2,000 cycles was generate simulations. here compare with theoretical results. It observed pressure increases, whereas temperature at film/bush interface slightly decreases both upper lower lobes. trends are confirmed by simulations, results close data. final value for measured, maximum found located an angular coordinate 180° reaching nearly 9 μm. study demonstrates that, case studied, while clearly affected wear, still remains useable safe.Copyright © 2006 ASME