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  1. nodalDOF

    Populating Point Masses From Excel

    Save the required worksheet as a comma-separated or Tab-delimited text file and use *VREAD or *TREAD to read in the data. I found *TREAD typically more useful as it doesn't require data format specifier.
  2. nodalDOF

    Access SOLID185 Integration Point Stresses - Similar to SOLID45 NMISC Data?

    I am updating one of our old FEA models (that used the legacy SOLID45 elements) to use SOLID185 and in the process I noticed that the integration point principal stresses available via ETABLE (NMISC) are no more available for SOLID185. Is there a way to access those integration point stresses...
  3. nodalDOF

    Ansys APDL smooth plot

    Check /GROPT and /GTHK command options Nodal
  4. nodalDOF

    Beam vs Solid - Plastcity

    I am not sure about workbench but are you doing the same thing in the beam vs. solid element models? Why are you using General beam section (SECTYPE,1,GENB,plastic)? How are ensuring that they have same geometrical properties? Did you check your solid and beam models have same moments and total...
  5. nodalDOF

    Vapor/liquid permeation dependence on pressure differential?

    Sounds like an interesting setup. For now, I am just into calculations. Thanks for clarifying.
  6. nodalDOF

    Vapor/liquid permeation dependence on pressure differential?

    Thanks much bruteblood. The note makes sense. May be that's the reason why some times the permeability coefficient for H2O is given for certain materials in Polymer Handbook and the Vapor Transmission rate other times. On the the other hand, I am still not clear when "the inverse relationship...
  7. nodalDOF

    Vapor/liquid permeation dependence on pressure differential?

    Hi, I am new to vacuum technology and recently confronted with a problem of polymer seal design for a vacuum application. I am calculating the permeation rates of various gases through polymers. After going through some handbooks for permeability coefficient values of gases for polymers I am...
  8. nodalDOF

    Vavuum Chamber Design - Air Permeation Calcs

    Hi, I am trying to solve an air permeation problem through a polymer seal but i don't have any experience in vacuum technology. I worked on this problem a bit but not sure if my approach is correct..... Let's say I have a cubical Glass vacuum chamber (volume V) with initial high vacuum...
  9. nodalDOF

    Air Permeation Through Polymer Slab- Calculations?

    Hi, Here is a simple permeation problem I am trying to solve but confused with the calculations Let’s say I have a cubical Glass vacuum chamber (volume V) with initial high vacuum about 10-5 torr. (No more pumping to maintain this constant) The chamber has a rectangular seal of area 'A'...
  10. nodalDOF

    Running LS-DYNA from within ANSYS

    Hi, We have ANSYS/LS-DYNA license and i can generate a the LS-DYNA input file (*.k) by using "write jobname.k" option in ANSYS GUI (under solution). I can solve this separately using LS-DYNA executable as we have a separate LS-DYNA license. However when i Issue the SOLVE command with in...
  11. nodalDOF

    Input Stress Vs Strain data from tensile test Experiment in to CAE.

    Thanks much brian.
  12. nodalDOF

    Input Stress Vs Strain data from tensile test Experiment in to CAE.

    I have True-Stress vs True-Strain data from tensile test experiments. this data has more than thousand points(x,y) to totally define the stress-strain curve starting with the initial linear elastic response followd by plasticity (hardening) till necking. Now the questions are (1) Do i need to...
  13. nodalDOF

    Modal analysis underwater

    Steve, You are right. I think people already thaught in those lines and concluded that there may be significant error if we represent viscous dampng through non-viscous and viceversa. linkinghub.elsevier.com/retrieve/pii/S0022460X00933911...
  14. nodalDOF

    Is it possible to offset Curves/lines in ANSYS?

    something like this...http://files.engineering.com/getfile.aspx?folder=ad359031-dbe4-4a4d-baa3-4a5ac511a866&file=Spline_Offset.JPG
  15. nodalDOF

    Modal analysis underwater

    Seymours, Yes, that could have been a well posed question.... I am not a vibrations guy so may be dumb questions...... How diferent the response of a structure would be in material vs. viscous damping? Can't we incorporate viscous damping in to material damping which could be easily input...
  16. nodalDOF

    Modal analysis underwater

    Check the following regarding modal analysis. If damping can be applied to element then why not specify a equivalent damping coefficient and run the modal analysis? 3.3. Building the Model for a Modal Analysis When building your model with the intention of performing a modal analysis, the...
  17. nodalDOF

    Is it possible to offset Curves/lines in ANSYS?

    Yes. But its not just moving in X or Y direction. the keypoints should move normal to original curve to a specified offset distance and the offset curve should pass through these points. (just like we offset lines in solidworks,autocad etc). nodal
  18. nodalDOF

    Is it possible to offset Curves/lines in ANSYS?

    Thanks bobby. But i using the classic ansys version 12 and i am looking for any commands/macros that can do the job. nodal
  19. nodalDOF

    Is it possible to offset Curves/lines in ANSYS?

    Is there a command/macro to offset lines in ANSYS? By OFFSET i mean the keypoints should move normal to lines to the specified distance. I know LGEN works for straight lines and circular arcs but what about other irregular curves? (Its cumbersome to find the centers of every segment and use...
  20. nodalDOF

    Easiest way to group new lines/areas after division

    Is there an easier way to group the the newly formed lines after the command LDIV? Assuming the original lines have some attributes assigned using (LATT). Lets say i have a set of lines grouped using CM command. Now i split some of the lines in this set and want to regroup including the newly...

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