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  1. plvachon

    Problem when plotting graph in V12

    Kan, you are right: it works on another PC... I am going to investigate. Thank you for your input!
  2. plvachon

    Problem when plotting graph in V12

    ...a note regarding graphs plotting in V12, but everything seems to be the same as in V11. Thanks in advance... ----------------- /CLEAR FINISH /REP *DIM,hello,TABLE,4,2 *DO,i,1,4 hello(i,1) = i hello(i,2) = i*10 *ENDDO /GTYPE,1,GRPH,1 /GCMD,1,*VPLOT,hello(1,1),hello(1,2)...
  3. plvachon

    Composite machining: Diamond or Diamondlike coating?

    Hello all, I need to make some machining on carbon/epoxy composite parts, so i have to buy some diamond-coated endmills. I found two types of coatings in the catalogs: diamond and diamondlike coatings, with diamondlike being half the price of diamond. Has anyone already tried diamondlike-coated...
  4. plvachon

    Any paint suitable for carbon fabric?

    @CompositePro Silver Sharpie works great! Thanks a lot...
  5. plvachon

    Any paint suitable for carbon fabric?

    Thanks for your tip, I'm going to try it. I have already tried white colored Sharpie Paint, but the "ink" seems to impregnate the fibers and almost disappear.
  6. plvachon

    Any paint suitable for carbon fabric?

    Hello all, Does anyone know any type of paint/primer/whatever that can be sprayed on top of carbon fabric, without altering the resin infusion properties and mechanical properties (fiber/resin adherence, resin strength, and so on...)? I would like to "draw" the shape of the carbon/epoxy samples...
  7. plvachon

    Max. allowed length of a command line in M-files?

    Hello all, Does anyone know a command that could allow me to know the maximum allowed length of a command line in M-files? I have a very long expression to solve and I would like to know if I have to cut it into smaller expressions. Thanks!
  8. plvachon

    using the fsolve command

    Thanks ElectricPete, I used your hint #2 and it works fine!
  9. plvachon

    using the fsolve command

    Hello all, My question relates to Matlab syntax and the way Matlab communicates between M-files and function files. I am trying to solve a system of 2 non-linear equations (with 2 unknowns) using the fsolve command. I wrote a function (function solu = myequations(guess)) that contains my 2...
  10. plvachon

    Carbon/epoxy with Ti-Ni: Galvanic Corrosion?

    Hello everyone, I am currently designing a structure made of carbon fiber composite plates (the resin is epoxy) incorporating some Ti-Ni inserts. Ti-Ni is a shape memory alloy. I am wondering if there could be a galvanic corrosion problem with this design (carbon with Ti-Ni). The structure is...
  11. plvachon

    Layered plates: interlaminar calculations

    Hi all, This is not my first post on that subject, but I don't find any input. So I will try here to simplify my problem. I want to extract the interlaminar stresses at an interface between 2 layers, for a composite plate under uniaxial extension. For instance, if I take a [45/-45]s laminate...
  12. plvachon

    Composites FEA: interlaminar stresses

    ...thickness per layer. If I want to get Sxz at 45/-45 interface (for example), may I just select the nodes at the right interface, and then use the *GET command to extract S,XZ? This is not as simple as it looks, because the stresses are computed at integration points and then, extrapolated to...
  13. plvachon

    Changing the system of units in "Relations" code

    Hora, Yes, I can use the Setup, but the reason for which I asked the question is that I would like to write a simple code in "Relations", from which my students could change the system of units by setting a variable to 0 or 1, for example. And then the part (a gear tooth) would be updated...
  14. plvachon

    Changing the system of units in "Relations" code

    Hi all, I'm wondering if it is possible to switch from a system of units to another by programming in the "Relations" menu. I know I can write "If" commands and so on, but is there a system variable that specifies the system of units and that I could change in the Relations code? Thanks in...
  15. plvachon

    Interlaminar stresses with Solid46

    ...center of the laminate, there is a peak where I should see 0... I guess that the problem lies in the way I extract interlaminar stresses with the *GET command on nodes. Here is a piece of my code: ET,1,SOLID46 KEYOPT,1,1,1 ! Suppress extra displacement shapes KEYOPT,1,2,0 ! constant thick...
  16. plvachon

    Interlaminar stresses with Solid46

    ...are not the same as for the other authors. Here are the code lines for extracting stresses: NSEL,S,LOC,X,0 NSEL,R,LOC,Z,0.375 ! Select nodes *GET,sxz,NODE,node_number,S,XZ ! Sxz I guess that the problem comes from the way I extract the stresses. I mention that all nodes on the...
  17. plvachon

    Calling Matlab from Ansys input file?

    I think you're right, cbrn. Thanks for your helpful tips!
  18. plvachon

    Calling Matlab from Ansys input file?

    Thanks Cbrn and Stringmaker. I will write a Newton-Raphson algorithm. But it would have been interesting to solve with an existing solver! Regards.
  19. plvachon

    Calling Matlab from Ansys input file?

    Stringmaker, Is there any APDL command for solving equations?
  20. plvachon

    Calling Matlab from Ansys input file?

    Hi, I need to solve an equation (numerically) in Ansys... May I call a Matlab session from an Ansys input file, and then use the solution from Matlab to continue the process in Ansys? In other words, I must find the value(s) of x for which f(x)=y, with y known. I mention that f(x) is a...

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