Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Michael1968

    Rotordynamics/Bearing Loads in ANSYS

    Hello, I also posted my problem in "Bearing design, manufacture.." and the first reply also was, that the problem is not clear :-) I described it in this forum more exact. Michael
  2. Michael1968

    Bearing load

    Hello sms, thanks a lot for your reply. I try to rephrase it :-) We have designed a bearing and I try to show, that the bearing load (what is the "bearing load" --> this is the question) stays below a an allowed value. The static load I have and now I examine the dynamic loads. The...
  3. Michael1968

    Bearing load

    Hello experts, I still had this question in Mechanical Acoustics/ Vibration engineering, but I think, it is better here in the bearing forum. I'm doing a rotordynamic analysis (in ANSYS) of a shaft with journal bearings. There are time-independent loads (fixed in space) and unbalance. The...
  4. Michael1968

    Rotordynamics/Bearing Loads in ANSYS

    Hello experts, I'm doing a rotordynamic analysis (in ANSYS) of a shaft with journal bearings. There are time-independent loads (fixed in space) and unbalance. The journal bearings are simulated with matrix27 stiffness and damping elements with unsymmetric factors (C11, C12, C21, C22, D11, D12...
  5. Michael1968

    Time history method

    Hy, it is a spectrum I want to use to simulate the behaviour of a turbine (especially the bearings) inside a building and the time history has to build according ASME. Michael
  6. Michael1968

    Time history method

    Hy, I want to use the time history method instead of the spectrum for simulatiuon of an earthquake. How do I get from a acceleration-response spectrum a transient displacement for the analysis ? Thank you a lot for your help Michael
  7. Michael1968

    Determination of "static" bending line

    Hi cbrn, I thought, the coefficients cxx cxy cyx and cyy do not determine the equilibrium position, but the dynamic behaviour at (!) equilibrium powition. Is that correct ? My question concernded the determination of the equilibrium position... Regars
  8. Michael1968

    Determination of "static" bending line

    Hy, how can I determine the "static" bending line of a vertical shaft inside 3 journal bearings, including a static force (For the determination of the bearing-loads and the rotordynamic coefficients). I can get the static deflection curves of the bearings x=x(Fstat) and y=y(Fstat) but I get...
  9. Michael1968

    earthquake

    Hello, for determination of the acceleration from earthquake, the first natural frequency of the part has to be evaluated to determine, if you have rigid body motion (for a high natural frequencies) or if a response analysis has to be performed. Which natural frequency is normaly used for this...
  10. Michael1968

    Rotordynamic coefficients of a plain seal

    Hello, I'm working in the moment on the rotordynamic coefficients of plain seals in pumps and I'm a little bit confused about the positive or negative sign of the crosscoupled stiffness and damping coefficient. In detail: I have a coordinate system: x is to the right and y is to the top (so z...

Part and Inventory Search

Back
Top