Search:

Type: Posts; User: ateshian

Page 1 of 20 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    1
    Views
    4

    Hi Lexie, Under Preferences->Selection you can...

    Hi Lexie,

    Under Preferences->Selection you can turn on "Ignore backfacing items" and turn on "Ignore interior items", see if that helps.

    Best,

    Gerard
  2. Hi Sinba, I looked at the file you sent me and...

    Hi Sinba,

    I looked at the file you sent me and I had difficulty importing it into FEBioStudio since it was generated on Gibbon. Nevertheless, there was at least one problematic situation with the...
  3. Replies
    5
    Views
    68

    Hi Fluvio, Yes, it is possible for the shell...

    Hi Fluvio,

    Yes, it is possible for the shell elements to be too thick. In that case it is easier to use the extrude tool on FEBioStudio to extrude penta (from triangles) or hex elements (from...
  4. Replies
    5
    Views
    68

    If the shell elements are attached to solid...

    If the shell elements are attached to solid elements, FEBio assumes that the solid element loses a height equal to the shell thickness. If the solid element is not thick enough, subtracting the...
  5. Replies
    5
    Views
    68

    Hi, You can use shell elements to simulate...

    Hi,

    You can use shell elements to simulate very thin membranes. This would require you to create a surface mesh only, and it doesn't have to be too fine.

    Best,

    Gerard
  6. Hi Sinba, Would you be able to share your...

    Hi Sinba,

    Would you be able to share your model file with me? This would help me understand the issue better.

    Best,

    Gerard
  7. Hi Kuo, I don't use Abaqus at all, so...

    Hi Kuo,

    I don't use Abaqus at all, so unfortunately I can't help you with this question. Maybe another forum user can assist you?

    Best,

    Gerard
  8. Hi Kuo, In the literature the Neo-Hookean...

    Hi Kuo,

    In the literature the Neo-Hookean material is often described as a special case of the Mooney-Rivlin material, which is an incompressible solid. In FEBio, the "neo-Hookean" material is a...
  9. Replies
    6
    Views
    113

    Hi Alex, That study (and others that use...

    Hi Alex,

    That study (and others that use biphasic materials in FEBio) use quasi-static analyses (which is the default analysis type for biphasic materials), so they can model transient responses...
  10. Replies
    6
    Views
    113

    Hi Alex, None that conserve energy, currently....

    Hi Alex,

    None that conserve energy, currently.
    The outcome of dynamic analyses using contact interfaces may be unpredictable. For example, if a cube of elastic material is dropped under the...
  11. Replies
    6
    Views
    113

    Hi Yidan, I assume that your knee model...

    Hi Yidan,

    I assume that your knee model involves contact interfaces. FEBio's sliding contact interfaces are not yet designed to work with dynamic analyses. That's probably why you are seeing...
  12. Hi Susanne, Ben looked into this problem and...

    Hi Susanne,

    Ben looked into this problem and analyzed it using FEBioStudio 1.0.2 on Windows. He confirmed that the run terminates prematurely. We are looking into this bug and will try to...
  13. Hi Alexander, This is great, thanks for...

    Hi Alexander,

    This is great, thanks for sharing this link. I will look into it.

    Best,

    Gerard
  14. Hi Alexander, No, the "viscoelastic" material...

    Hi Alexander,

    No, the "viscoelastic" material analyzes quasilinear viscoelasticity, which means that the relaxation functions cannot be strain-dependent.

    The "reactive viscoelastic" material...
  15. Hi Susanne, The FEBio website shows that...

    Hi Susanne,

    The FEBio website shows that version 1.0.2 was posted just yesterday, see https://febio.org/downloads/.

    Would you please download that version and try it out? In the meantime I...
  16. Replies
    4
    Views
    102

    Hi Amevi, I already implemented the fixes in...

    Hi Amevi,

    I already implemented the fixes in the development versions of FEBio3 and FEBioStudio. I am not sure when they will become available, but if you are using the Mac operating system I can...
  17. Replies
    4
    Views
    102

    Hi Amevi, The FEBio source code shows me...

    Hi Amevi,


    The FEBio source code shows me that this is not an uncoupled material. So the fact that it shows up that way on FEBioStudio is an error that needs to be fixed.

    Here also, looking...
  18. Replies
    1
    Views
    37

    Hi Elliott, This is what you should see when...

    Hi Elliott,

    This is what you should see when examining the repository on FEBioStudio for the FSI Paper Examples.
    2304
    If you don't see the same thing, would you please share a screen dump of...
  19. Hi Susanne, I downloaded Jeff's model and also...

    Hi Susanne,

    I downloaded Jeff's model and also the latest FEBioStudio1.0.2 and I was able to run his model to completion. (I am using the Mac version.) The model doesn't crash for me. Can you...
  20. Thread: Febio units

    by ateshian
    Replies
    1
    Views
    65

    Hi Vaishakh, When the units of force are [N],...

    Hi Vaishakh,

    When the units of force are [N], the force you need to apply is simply 100 kg x 9.8 m/s^2 = 9800 N. This assumes that you are applying the force directly, without using a body force...
  21. Replies
    1
    Views
    62

    Hi Fluvio, Self-contact is allowed in the...

    Hi Fluvio,

    Self-contact is allowed in the sliding contact interfaces. Just select the same surface(s) as primary and secondary. When using sliding-elastic contact, make sure to reduce the...
  22. Replies
    1
    Views
    42

    Hi Kostas, angtol refers to the maximum angle...

    Hi Kostas,

    angtol refers to the maximum angle (radians) allowed between the axis of rotation on rigid body A and that on rigid body B. A tight tolerance would be e.g., angtol=0.001.

    When using...
  23. Hi Shu, I sent you an email with a link to the...

    Hi Shu,

    I sent you an email with a link to the executable earlier today.

    Best,

    Gerard
  24. Hi Vaishakh, There are are two options for...

    Hi Vaishakh,

    There are are two options for modeling FRPVE materials:

    1) The <solid> component of a <biphasic> material may be selected to be of type "viscoelastic". The <elastic> component of...
  25. Hi Sinba, It is hard to tell what causes your...

    Hi Sinba,

    It is hard to tell what causes your model to fail. For the third step it would seem to me that you should perform a contact analysis, though you say that you are trying to avoid that. ...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4