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. aulrich

    ANSYS WB 13.0 - Reaction Forces from Harmonic

    Still no luck with this. I have done some more troubleshooting and found that I am getting the following error in my harmonic response run: ... SELECT COMPONENT REACT_AREA1 SELECT ALL ELEMENTS HAVING ANY NODE IN NODAL SET. 93 ELEMENTS (OF 18289...
  2. aulrich

    ANSYS WB 13.0 - Reaction Forces from Harmonic

    Orel, I am using the harmonic response module. And yes, I am unsure if the method used in the link will work for harmonic, but I am hoping it will, perhaps with slightly different code? Andri
  3. aulrich

    ANSYS WB 13.0 - Reaction Forces from Harmonic

    Hello all, I am attempting to obtain reaction forces from a harmonic simulation in ANSYS WB 13.0. It appears the only way to do this is with some command objects that grab this info from ANSYS Classic. I found the following blog that is similar to what I am trying to do...
  4. aulrich

    Bead Rolling Standards

    ornerynorsk and dhengr, I need the sheet to be pretty flat, so brake-forming a shallow bend in a X pattern is probably out of the question. The sheet is actually the side of a centrifugal fan housing/volute, so it's not square or even rectangular in shape. The shop says that they currently...
  5. aulrich

    Bead Rolling Standards

    I went ahead and emailed the shop to see what they can do. I am concerned that they won't be able to bead roll material that thick, as StrykerTECH mentioned. Also of concern is that the material will likely not be very flat after bead rolling, especially a heavy gauge and a large bead. I may...
  6. aulrich

    Bead Rolling Standards

    Hi all, We have some sheet metal fabrications made of 10 GA steel. Because there are some pretty large flat pieces, the structure lacks stiffness in several areas. Someone here suggested bead rolling these large flat pieces to increase the stiffness. This may well work, but I have not had any...
  7. aulrich

    Acme Lead Screw - Resultant Nut Torque

    Desertfox, sorry for the confusion. I realize now that in my first post I noted that the lead screw was stationary - what I should have said is that it is rotating, but axially stationary. The nut, of course, is constrained from rotating, but moves along the screw axially to raise a load. Ted...
  8. aulrich

    Acme Lead Screw - Resultant Nut Torque

    Thanks to all who have responded. First, I'd like to address Jboggs' comments. You are correct in your facts 1,2,3 and 5. However, number four should be: 4. A motor applies a torque to one end of the lead screw. I am interested in knowing the resultant torque on the nut. That torque on the...
  9. aulrich

    Acme Lead Screw - Resultant Nut Torque

    Alright, I think I have something figured out. I know that the torque required to raise the load has in a sense two components: The torque to overcome friction in the threads, and the torque to actually raise the load. I know that the total torque to raise the load is: (Equation 1)...
  10. aulrich

    Acme Lead Screw - Resultant Nut Torque

    Mike, yes, assuming the resultant torque being equal to the torque input to the screw would certainly be a worst case scenario. However, I'd still like to know what the resultant nut torque would be during normal operation. This is because the guide rollers run on long, end supported aluminum...
  11. aulrich

    Acme Lead Screw - Resultant Nut Torque

    I am designing a lead screw assembly with a stationary, vertical screw and a moving nut in a nut carrier. I know how to calculate the torque required to raise and lower the load, but what I can't figure out is how to calculate the resultant torque on the nut (due to friction), ie the reaction...
  12. aulrich

    PTC Threaded Fasteners BOM Callout

    For those of you familiar with the PTC standard fastener library: How do you work with the inch fasteners such as bolts and nuts considering there is no thread data in the family tables? Typically we like to define the thread pitch (UNF or UNC) for our bolts and nuts in the BOM table callout...

Part and Inventory Search

Back
Top