Tilting pad journal bearing (radial) dynamic coefficients

[emadlawati]

Hello there!
Hope you all are well.

I've been recently introduced to ROSS, and I have used it to obtain lateral analysis of a rotor model (UCS, Unbalance response, level 1 stability, etc) with great results benchmarked against an existing analysis made by MADYN. However, the bearing dynamic coefficients were as a given by the vendor, but I have the geometry details of the bearing & lubrication information with temperature references.

I have seen the THD_Cylindrical, but from my simple understanding it does not support tilting pad geometry, unless I am mistaken. So I wanted to ask if there is a method to obtain the dynamic coefficients of a tilting pad bearing, or if I can be guided towards how to make THD_Cylindrical work for Tilting pads bearings.

Much thanks

[jguarato]

You’re right, THD_Cylindrical class does not support tilting pad geometry. However, there are some ongoing developments in ROSS related to tilting pad bearings.

@gsabinoo, could you please help clarify the current status or suggest how to proceed? Thanks!

[gsabinoo]

Hi @emadlawati and @jguarato,

I hope you're both doing well.

As @jguarato mentioned, there are ongoing developments in ROSS to enable the calculation of dynamic coefficients for tilting pad bearings. These features are expected to be integrated into the library in the coming weeks.

As soon as the implementation is available, I’ll make sure to let you know, @emadlawati!

[gsabinoo]

Hi @emadlawati! Hope you are well.

The implementations regarding the Tilting Pad are available in the main. I recommend taking a look at the TiltingPad class.

[emadlawati]

Hello @gsabinoo
I am doing well, I hope you are doing well also.

Thank you very much for notifying me! I appreciate it a lot.

I will check it out right away!