A transient dynamic analysis of mechanical seals including asperity contact and face deformation

摘要: Face seals are typically designed to be in contact at standstill. However, as speed and pressure build up, the seal faces deform from their factory flat conditions because of viscous dry friction heating, well mechanical centrifugal effects. It is imperative that such deformations form a converging gap for radial flow ensure stable operation promote favorable dynamic tracking between stator rotor. A numerical simulation presented transient response face subjected forcing misalignments while speeds pressures ramped up down. Asperity forces deformation caused by heating included. new closed-form solution obtained elastoplastic model, which allows seamless transition contacting noncontacting modes operation. The model then used calculate occur predominantly during startup shutdown. shows time-de...