Mechanical-thermal sequential coupling simulation for predicting the temperature distribution of seal rings - Part I

摘要

Understanding the running status of a mechanical seal - including its thermal state - is critical to ensuring the long service life of rotating machinery. Published in two instalments, this article broadly covers failure analysis of mechanical seals. In particular, it presents details of an approach to predicting the temperature distribution of seal rings using mechanical-thermal sequential coupling simulation. Three different cases are studied for comparison purposes in order to reveal the effect of misalignment on the thermal state. The first part of this article, which appears here, mainly describes the computational approach and the coupled numerical method, including the mechanical and thermal models, and the friction power-distribution for the load transformation. The second instalment will be published in the June 2020 issue of Sealing Technology. Failure mode effects and criticality analysis (FMECA) - methodologies that are designed to identify potential failure modes for a product or process, has been shown to be very helpful in the criticality analysis of various mechanical devices.