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: *

  • Users: Timusop
  • Content: Threads
  • Order by date
  1. Timusop

    Contact and sub surface stress calculations

    Does anyone know where I can find the equations used behind these calculations: http://www.mesys.ch/calc/hertz.fcgi I am particularly interested in calculating the subsurface stresses and shear stresses in the x,y,z directions.
  2. Timusop

    Different properties of outer elements

    I have some complex bone geometry in Abaqus, is there any way of defining the elements associated with the outer surface to have one set of material properties and the rest of the internal elements to have another set of material properties. Another way of doing this maybe to have the first 1mm...
  3. Timusop

    Relationship between contact pressure and friction

    Hello all, I am wondering if there is a relationship between friction and Hertz contact pressure defined somewhere. I just can't seem to find it. I could use FE to determine this, but didn't want to waste time if its already been done. Thanks.
  4. Timusop

    Abaqus API

    Hello all, 1) Does anyone know if and where I can get hold of the Abaqus API (Application programming interface) for Fortran. Someone suggested this may help me solve some uninitialized memory read problems that I am having with my subroutines. 2) Does anyone use any good debuggers for helping...
  5. Timusop

    Easiest way to obtain stress-strain data for material

    Hello all, I would like to obtain a stress-strain data. I can access a curve from a book, but I would ideally like the actually data. I may need to run the stress-strain test myself. I am wondering the easiest way to determine the stress-strain of a material. We have very little bugdet to do...
  6. Timusop

    Statistical software for Engineers

    Hello all, Can anyone recommend any free statistical analysis software (ideally for engineering). I really need something ASAP, I am looking at normal distributions of surface asperities. I look forward to your input, thanks.
  7. Timusop

    Understanding where data in subroutine is extracted from

    Hello all. I am in the process of writing a UMESHMOTION subroutine to model the wear of materails. For this I am using: CALL GETVRMAVGATNODE(LOCNUM,JTYP,'CDISP',ARRAY,JRCD, $ JELEMLIST,NELEMS,JMATYP,JGVBLOCK) and CALL GETVRMAVGATNODE(LOCNUM,JTYP,'CSTRESS',ARRAY,JRCD, $...
  8. Timusop

    Error function

    I understand the basis of the math behind the error function (http://mathworld.wolfram.com/Erf.html) however... Can anyone please explain in "engineering terms" what the error function is and how can I use it? I have found the erf(h/sqrt(2*s)) in the derivation of formula which involves...
  9. Timusop

    Different results between .odb and .msg file

    I have a UMESHMOTION subroutine, and in this subroutine, I call the CSTRESS results and CSLIP. There seems to be a massive difference between the results. The results in the .odb file seem to be sensible, but the results written to the .msg file are not sensible. Any ideas on why this might be...
  10. Timusop

    CSLIP Confusion

    I am confused why my CLSIP1 values are showing as expected when I view them in my .ODB file in CAE, however when I print out my CSLIP values (in the x direction) from my UMESHMOTION subroutine I obtain a constant value (-1E36 throughout the step when I write CSLIP to the .msg file. Here is the...
  11. Timusop

    Radius of an asperity

    I am trying to determine the "Radius of curvature" of an asperity. I am using a Wyco NT-2000 surface optical profiler. I am not sure if I can determine the radius of curvature from the machine directly? The machine can output, the "Mean Summit curvature" (as explained here...
  12. Timusop

    Understanding node numbers

    Hello all, I am trying to clear up my understanding of node numbers for parts in Abaqus. I have two parts. One has node number 1-54 and the other has node number 1-63. I would like to make reference to the node numbers in a subroutine, but how can I distinguish between the part node numbers...
  13. Timusop

    Error with abaqus subroutine

    Hello all, I seem to be having a problem with one of my subroutines. I recieve the following error message when the complier is running. forrtl: severe (24): end-of-file during read, unit 25, file C:\documents\docres.txt Image PC Routine Line Source...
  14. Timusop

    Developing software to link with Abaqus

    Does anyone have any advice on developing a software programme to work with abaqus? I would like to develop an input software programme to where a user would input a number of values ieally through a GUI, i.e. diameter, E, etc. And this would set up an input deck to be submitted to ABAQUS. I...
  15. Timusop

    Printing data to .dat anf .fil

    Hello, I am trying to plot CPRESS data to .dat and .fil files. I can plot the data such as MISES, U1 using the *EL PRINT and *NODE PRINT commmands. However I can not seem to plot CPRESS information using these keywords, here is part of the STEP section of the input file. Not sure where I am...
  16. Timusop

    Writing results to a txt file through a subroutine

    I would like to write results to a .txt file through a subroutine, but can not find the code to include into my subroutine. Can anyone help? I have provide my current subroutine below. Thanks. SUBROUTINE USDFLD...

Part and Inventory Search

Back
Top