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: *

  1. mosgef

    modeling of a composite plate

    In 3D, you can try using a continuum shell element definition and then using a composite shell section with the ply lay-up defined in terms of the material and fiber orientation direction.
  2. mosgef

    how to display a load -displacement curve in abaqus

    You can try loading the results in Viewer and defining a cut plane. From there you can request the resultant forces and moments on that plane.
  3. mosgef

    codes to restart a simulation from previous results

    If you're looking a different pressure and temperature profiles after some initial pre-load, you can run the analysis in two steps, with different load cases in the second step. The has the advantage of using multiple right hand sides for a single left hand (stiffness etc..) matrix. For linear...
  4. mosgef

    A simple cantilever beam static loading deflection

    You can add the density of the material in the *MATERIAL card, and then apply a body force via a distributed load. Assuming acceleration due to gravity , g in the negative z direction, your deck should look something like *NODE ... *ELEMENT, ELSET = Beam ... *SECTION... *STEP *STATIC...
  5. mosgef

    How to get Convergence Plots!

    It depends on what type of analysis you're running: Unless you add additional solution control options, the default solver for a static and harmonic analysis is a direct method, so there will be no convergence plots as with an iterative solver. If you'd like to get a feel for solution progress...
  6. mosgef

    Plastic Strain Data Input

    you should have something like *ELASTIC, TYPE = ISOTROPIC (380e+06/5.4e-03), poissons ratio, *PLASTIC 380.0e+06, 0.0 390.0e+06, (5.61-5.40)e-03 396.0e+06, (5.80-5.40)e-03 etc.... Both stress and strain need to be input in consistent units, so if your value of measured strain is 5.4e-03 at a...
  7. mosgef

    Use Node Set to define path in Abaqus/Viewer

    Dnov, You're correct, the intersections will only work in a straight line. However, the number of nodes you'd need to select in order to get the right path depends on how curved it is. Think Nyquist sampling. I haven't done an extensive study, but I'd guess that if you're trying to get the...
  8. mosgef

    Modify FE Mesh by Editing CAE file directly?

    There are a few ways. You can add the following line to your abaqusv6.env file noPartsInputFile=ON OR enter the following line into the small command window at the bottom of the CAE sessions mdb.models['model name'].setValues(noPartsInputFile=ON) Depending on which version of CAE you're...
  9. mosgef

    Use Node Set to define path in Abaqus/Viewer

    You may have luck defining a node based path from the start and end nodes (which you could define as sets in CAE). You can then create XY data from that path, making sure to check 'include intersections'.
  10. mosgef

    Modify FE Mesh by Editing CAE file directly?

    I have found that the CAE default method of using assembly and part definitions makes rooting around in the node and element tables very difficult. If you want become more familiar with the .inp instead of relying on the CAE interface (I HIGHLY recommend this, it makes debugging much easier once...
  11. mosgef

    Tie Constraint surfaces

    Depending on the preprocessor, you should be able to grab the outer face of the solid, and 'convert to shell'. This should create a layer of shell (S4 or S3) elements that will share nodal connectivity with the solid elements. You can then define the thickness of the outer layer in the section...
  12. mosgef

    How to get rid of elements with very small, negative or zero dimension

    If the indenter causes relatively small deformation, simply using *ADAPTIVE MESH, ELSET = your element set can help. I agree with Robert, that refining the mesh in the area of contact should help with initial element volumes. Further, if your simulation is dying somewhere during the run, you may...
  13. mosgef

    Creating a non-reflective surface using infinite elements

    Not sure if the use of infinite elements is really appropriate for this loading condition, but they are elements of n-1 dimension for an n-dimensional analysis. Since you're running a 2d simulation, they would be 1-d line elements. Depending on what pre-processor you're using you can do...

Part and Inventory Search

Back
Top