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. Penguineer

    The normal of target element XXX is not consistent with the normal of target element YYY

    Maybe this is too late, but I had this problem recently and resolved the issue, here's what I did: 1) In the solution information, locate the error, it should state your error as well as the real set number that this is occurring in. Copy or write down that real set number. 2) Load up the...
  2. Penguineer

    Sharp Radius and Peterson's Stress Concentration Factors

    Thanks for your input. Could you advise which standard is being referenced in regards to the radius of the keyway of a profile cut? ANSI B17.1?
  3. Penguineer

    Sharp Radius and Peterson's Stress Concentration Factors

    ...is along the side of the keyway. In calculating the nominal bending stress in the shaft, is the maximum moment used in the stress equation (32M/pi*D^3) or the moment at the x-position on the shaft that's being analyzed? For example, they keyway fillet in the shaft does not reside in the same...
  4. Penguineer

    1045 Cold Drawn Endurance Limit

    Hello All - I have been searching for the endurance limit of 1045 cold-drawn steel bar but have thus far been unsuccessful. Does anyone know where I can search or have a source I could reference to get this value? Thank you.
  5. Penguineer

    Effects of Keyway on Rotating Shaft

    I appears that Peterson's Stress Concentration Factors is the superior reference literature for this topic. I'm thinking that I should be able to acquire the stress concentration factor from that source and directly apply it to the safety factor equation in my previous post. Thanks!
  6. Penguineer

    Effects of Keyway on Rotating Shaft

    I just realized that I should also provide the efficiency calculation. e = 1 - 0.2(w/d) - 1.1(h/d), where: e = shaft strength factor (efficiency) w = width of keyway d = diameter of shaft h = depth of keyway = thickness of key / 2 I have also included the modified calculation I mentioned in...
  7. Penguineer

    Effects of Keyway on Rotating Shaft

    Thank you all for your responses. JJPellin - I searched through the database and could not find a paper covering this topic specifically. dhengr - I appreciate the input and completely agree with your summary. I was hoping (naively perhaps) that there were established stress concentration...
  8. Penguineer

    Effects of Keyway on Rotating Shaft

    Hello All, I was hoping someone could shed some light on the effects of a single square keyway on a solid shaft that experiences steady torque and a reversed bending moment, such as a pulley shaft. In my engineering books I have not found any mention of accounting for keyways, only changes...
  9. Penguineer

    Replace ANSYS Workbench Watermark?

    Is it possible to replace the watermark in ANSYS v15.0 workbench with something more personalized? I know in previous versions this was possible as explained below: There is a file in the installation folder called ANSYS_150.png that contains the watermark image used in DM, Mechanical, Meshing...
  10. Penguineer

    Weld Analysis at Throat of Model

    I ran this sample model in ANSYS, I was actually able to avoid using APDL and keep it in workbench by integrating the macro code as a Command instead. All works great, but fundamentally I have some questions. After extracting the loads and moments at the joint, the section modulus for the joint...
  11. Penguineer

    Weld Analysis at Throat of Model

    Thanks for the input Rick, I like your approach. I'm familiar with Weaver's paper and had considered getting his addon for ANSYS, but I would like to explore other techniques before requesting the $8,000 and justifying it to management. It seems to me that acquiring reaction loads from a joint...
  12. Penguineer

    Weld Analysis at Throat of Model

    ...surface through the throat plane. From there I figure I could measure maximum shear stress and compare against distortion energy theory (Sys = 0.58*Sy), which for an E70 weld is 33,640 psi. My rationale behind this is that a weld always fails in shear and the failure would occur at the...
  13. Penguineer

    Weld Nut Load Ratings?

    Hello All, I have been searching for load ratings for various weld nut sizes. I feel like this information should be out there based on the nut size and the weld size, but I have so far been unsuccessful. If anyone has seen information like this, could you point me in the right direction...
  14. Penguineer

    Contact analysis- a general question

    You shouldn't need to define two contacts for a single location, that would be redundant. Simply define what you initially stated, with the smaller face as the source and the region it will come into contact with as the target. Under Definition -> Behavior you can set the contact to behave...
  15. Penguineer

    Powder Coating O-Ring Contact Surface?

    Could an o-ring's seal integrity be compromised if the sealing surface is powder coated? The gland would remain uncoated and machined to the appropriate surface finish, however the plate that bolts down and presses the o-ring into its gland would have a powder coated surface (as opposed to an...
  16. Penguineer

    Critical Speed Using XLRotor Software

    Has anyone used the XLRotor software to design a drive system for a large industrial belt driven fan? I saw the recommendation for the software from the post below: thread384-103687 In evaluating the software it appears to be very useful, however I haven't seen anywhere in the tutorials or...
  17. Penguineer

    High Stress at Sheet Metal Curves

    Perhaps this will clear up some of the confusion with the model. What I have is a C-shaped formed channel terminating at the web of another C-shaped formed channel. The orange line follows the intersection where nodes are aligned. This is modeled as a full seam weld completely around the C...
  18. Penguineer

    High Stress at Sheet Metal Curves

    Thanks for the replay Corus. The point of concern to me is the stress near the curved region of the juncture; not so much the juncture itself. Following along the path of intersection, you can see relatively low stress up until you get to the bend. I don't see why it would be any higher at that...
  19. Penguineer

    High Stress at Sheet Metal Curves

    Hello, I have a welded structure that I modeled using surface bodies. All bodies intersect at what would be welded joints and all lines are split to ensure node-to-node bonding. Something I typically see with models like these is that I have relatively high stress right where one of the members...
  20. Penguineer

    Cycle Testing an Aluminum Pressure Vessel

    Hello, We’re performing pressure testing on an aluminum pressure vessel. What you’ll see in the attached image is that we have four samples that are tested as follows: 1) Burst test – Pressure increased until unit bursts 2) High pressure / low cycle 3) Low pressure / high cycle 4) Lowest...

Part and Inventory Search

Back
Top