Renze
Elite Member
phew... dont get me started here... I took a lot of time to explain such "occasional engineer" that what he drew in his production drawings, was entirely different than what he making a Finite Ends Analysis of... FEM software doesnt think in steel plates welded together, FEM thinks any surface meeting means a thorough connection, as if it was cast. I warned there were huge peak strains around the edges of the plate, right at the welds, and that his FEM calculated with the same elements though welds have different tensile strength and Young's modulus than the mother material... Sure i knew nothing about it because he had a degree and i didnt, but in the end the three machines all cracked where i predicted, and are now doing fine with the torque tube and attachment details as i specified, according to a simple hand calculation and old school engineering judgement...And you can find an occasional engineer who is mechanically challenged.
Even though i never took courses in FEM and havent ever used it myself, i turned out to have a better grasp of the concept of FEM than the booksmart guy that took evening classes to learn it...