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 MintJulep 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: *

  • Users: NaikD
  • Order by date
  1. NaikD

    Torque required to bring mating parts in contact

    All, Thanks for all the helpful suggestions. ___________________________________________________________________________________ IRstuff I made a mistake in posting the same question on other forum. Sorry about that. I appreciate your help...
  2. NaikD

    Torque required to bring mating parts in contact

    All, Thanks for all the helpful suggestions. ___________________________________________________________________________________ The lid can be treated as a beam and the force required to deflect it can be calculated. From there, given the screw pitch, etc., you should be able to...
  3. NaikD

    Torque required to bring mating parts in contact

    Hi, Thanks for the quick response. For the example of the "Shoe Box and Cover", One can install fasteners on one side easily and as you torque the fasteners, parts will make contact but the opposite side of the assembly will have a gap due to clearance/tolerances. I was referring to...
  4. NaikD

    Torque required to bring mating parts in contact

    Hello, I am asked to estimate torque required to bring mating parts in contact that could have an initial gap. A simple example could be an assembly similar to a shoe box with cover. If I were to provide fasteners on longer sides of the cover to assemble the cover to box, and if initially...
  5. NaikD

    Torque required to bring mating parts in contact

    Hello, I am asked to estimate torque required to bring mating parts together that could have an initial gap. A simple example could be an assembly similar to a shoe box with cover. If I were to provide fasteners on longer sides of the cover to assemble the cover to box, and if initially there...
  6. NaikD

    Reduced beam model for a complex assembly

    rb1957 I am using ANSYS. I have used NASTRAN/ PATRAN ten years ago. Customer is specifically asking for beam model that would be accurate enough for first couple of frequencies only. I did not enquire whether customer would be satisfied with the stiffness matrix in lieu of the beam model but...
  7. NaikD

    Reduced beam model for a complex assembly

    Rb1957 Correct. Customer is looking to reduce the size and complexity of this model specifically to a beam model. Greg Locock, I am leaning toward, representing beam by sections that may approximately represent cross sections at various places. I can split the assembly in four segments and...
  8. NaikD

    Reduced beam model for a complex assembly

    Hi All, I need help with general guide lines to create a beam model for a complex assembly with steel and aluminum parts, that would match at least first few frequencies. Since customer wants a beam model, shell model is not an option. For known cross sections (angle, channel etc.,) I can...
  9. NaikD

    Reduced beam model for an assembly

    Thank you FEA way! I never had to build a reduced beam model to represent a complex assembly so wanted to learn from the experts here. Yes my model is too complicated with steel and aluminum alloy parts. I can build a model with shell elements. However, customer wanted a reduced beam element...
  10. NaikD

    Reduced beam model for an assembly

    Hi All, I need help with general guide lines to create a beam model for a complex assembly that would match at least first few frequencies. For known cross sections (angle, channel etc.,) I can build the model. However, for complex assemblies with many subassemblies, I am...
  11. NaikD

    ANSYS APDL

    Rick, That was quick. I struggled for few days to get info on ANSYS APDL which is scarce (except for the help in mechanical) more particularly on sample examples/tutorials. Coding and syntax is little different than FORTRAN....I think. I will implement your suggestions in my bigger...
  12. NaikD

    ANSYS APDL

    Hi All, I am new to ansys apdl and am not familiar with the coding. I know I am not doing this right. Can someone help me with this code. I am trying to write x, y and z displacements to arrays dx, dy and dz I appreciate your help! Thank you, Dipak /post1...
  13. NaikD

    J script for exporting Von Mises Stress

    Hi, I know a code (J script) can be written to export the maximum and minimum values of Von-Mises stress results for all components in a FEM model to a text file that can be imported into excel. Can anyone let me know if this has already been done? Thanks in advance for your help! - Dipak
  14. NaikD

    Increase number of contact element in a ball joint

    J script for exporting Von Mises Stress Hi, I know a code (J script) can be written to export the maximum and minimum values of Von-Mises stress results for all the components in a FEM model, to a text file that can be imported into excel. Can anyone let me know if this has already been done...
  15. NaikD

    Increase number of contact element in a ball joint

    Flash3780, Sorry for the delay in replying to you. I fixed the CATIA model and started getting good results. For frictional contacts, we need to experiement a little as too much penetration or gap does not work. Line to line contact works and then if needed interference levels can...
  16. NaikD

    Increase number of contact element in a ball joint

    Hi, I am new to ANSYS. In my model I have four ball joints. However, due to the modeling error in CATIA, one of the ball joint resulted in an interference fit and remaining three have 0.06" gap in ball and socket. Ideally all four ball joints should have been the same. When I set...
  17. NaikD

    Relative displacements during random vibration

    Hi, I need help regarding test setup for determining relative displacements using accelerometers at two locations during random vibration. We had done this before about 6 years back but I have forgotten the details. 1. Install two accelerometers at two locations 2. Take output...
  18. NaikD

    FFT from time domain data

    Thank you FeX32 !! I will try this code. Appreciate your help. - Dipak
  19. NaikD

    FFT from time domain data

    Hi, I am getting wrong results and hence trying to figure out if I am computing FFT from time domain data right. Here is the code for matlab (MATLAB 7.5.0; R2007b). AllData.dat file contains time in first column and X moment in the 5th column. load AllData.dat; Time = AllData(:,1); Mx =...
  20. NaikD

    KG 80 Lubrication Oil

    Kenneth, Thank you very much for your prompt reply. I found the paper and all the information that I was looking for is in there. Thanks again, Regards, - Dipak

Part and Inventory Search

Back
Top