![]() ![]() Basically, material properties (with s-n curve info), BCs and actual loading, Goodman (or other) fatigue theory, and a few other parameters were added to make the model run. Please tell me if I’m wrong, but is it possible to do all of this in just one FEM? I came across some YouTube videos where fatigue analyses are performed in one model, without the need to take it to excel or run multiple models. Lastly is the calculation for Goodman percent. ![]() You may choose to cut and paste F(a) directly from Microsoft Excel. Singh A., Development and Validation of an S-N Based Two Phase Bending Fatigue Life Prediction Model. 3 Terms, definitions, symbols and abbreviated terms. At this point, I would create a standard Goodman diagram in excel from the material properties (endurance limit, FTU, FTY, etc.) and plot the vibration stresses (adjusted for dynamic amplification and input) and steady state stresses. The fatigue life is not very sensitive to the final crack size. Part 6: Calculation of service life under variable load. I’m trying to wrap my head around different ways of analyzing a components high cycle fatigue life, since I’m now just learning that FEM software is (supposedly) able to perform fatigue analyses, given I set up the model correctly.Īt my company, the method I was taught was to run two static FEM analyses, one with a unit g load to determine vibratory stresses, and then another FEM with actual loading to determine steady state stresses. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |