Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

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

Recent content by arm100

  1. arm100

    Bolt modeling in Workbench

    Solution Information does indeed show convergence of both steps. Thanks a lot guys.
  2. arm100

    Bolt modeling in Workbench

    According to what I read, the two steps are done automatically within workbech. The springs were added and the forces as you had guessed did have very small forces on them, so I am becoming convinced that the results may be Ok eventhough the software issues this error. I thank you guys for the...
  3. arm100

    Bolt modeling in Workbench

    I do have constraints on one of the brackets and load on the other. I have applied the preload to the shank and have made sure that mesh is compatible between hole and bolt shank. The results look reasonable (both stress and displacements) but the error is still there. I will next try these on...
  4. arm100

    Bolt modeling in Workbench

    Thanks for the tips. I will try them and let you know.
  5. arm100

    Bolt modeling in Workbench

    Thanks for your comments, The hole and the bolt are exactly the same size.I have applied the bolt force to the top circular face of the bolt head (maybe that is the problem).The nut, bolt shank and head are one solid part.I will have to check to see if I have N-R conatact convergence tool.
  6. arm100

    Bolt modeling in Workbench

    Guys, I am having a problem using the bolt feature in Workbench. I have defined all contacts as No Penetration, but the solver gives a "Rigid Body Motion" error. Can you tell me what is wrong. I have made a simple model of two L brackets clamped together by a single bolt to test out the bolt...
  7. arm100

    Interpreting FEA results

    The weldment is complex and there are stress raisers due to welds, etc. But for this type of complex geometry, traditional Strength of Materials solutions are for checking FEA results, as noted in one of the posts. I have been doing FEA since the 70's so I am not a novice, but the code used in...
  8. arm100

    Interpreting FEA results

    Guys, I am performing design analysis using ANSI/ALI which is mostly based on hand calculations. Obviously, my stress analysis results are going to be higher than those obtained by hand calculations. Is there a fudge factor I can use to address this discrepancy? Thanks.
  9. arm100

    Analysis Method in ANSI/ALI ALCTV:2006

    I am performing Design Analysis on an automotive lift. According to ANSI: "The allowable stresses (strength factors) defined in this standard are based on the assumption of analysis by classical strength of materials methods (models), although other analysis methods may be used". How do you use...

Part and Inventory Search