An Updated Computational Tilting Pad Journal Bearing (TPJB) Model to include Pad Flexibility
MAJOR APPLICATION: Widely applied in commercial turbomachinery: compressors, land based gas turbines, etc.
Sponsor: Turbomachinery Research Consortium (TRC)
OBJECTIVE: Build an enhanced computational program to model TPJBs considering pad flexibility
Significance: TPJBs are a
source of both static support and dynamic stiffness and damping. TPJBs typically have four or five pads. Figure 1 depicts a
five pad TPJB. Each pad is free to rotate about a pivot and cannot support a
moment. As a result, the destabilizing forces are greatly reduced or
eliminated, and the bearings are no longer a potential source of rotor dynamic
Accurate prediction of the static and dynamic forced performance of TPJBs is necessary to design, troubleshoot and predict the dynamic response and stability of rotor-bearing systems.
Figure 1 TPJB with five pads.
Tao, Y. (May, 2012), A Novel Computational Model for Tilting Pad Journal Bearings with Soft Pivot Stiffnesses