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Recent content by andrearrd

  1. andrearrd

    Pre-defined fields

    Hi all, I am really struggling with something for a couple of days now. I have a model and I am trying to restart it using the import analysis. I have to do this since I wish to change BCs and hence cannot use a restart analysis. Some of the model has 3D brick elements, some continuum shell...
  2. andrearrd

    ABAQUS RESTART PROBLEM

    Hi all, I am running a complex dynamic analysis simulating an impact event. I have done this using successive restarts of the same model to overcome the high computational time. Now, I want to load the structure, ie model post impact loading. when i try to do so I get an error saying that...
  3. andrearrd

    Cyclic Symmetry

    It wont allow me to save the XY data after I go to "XY data from odb output". I get a message saying that either my output was not requested in the output requests or that it is unavailable for this kind of element. The output in question is just a reaction force for SC4 elements, and it...
  4. andrearrd

    Cyclic Symmetry

    Hi, I am trying to analyze a model of a stiffened cylinder. I have run the full model, and are now trying to set up a cyclic symmetry model of 1/8 of the whole cylinder to save computational time as I will eventually do an optimization on it. Ive set up the cyclic symmetry with the...
  5. andrearrd

    Element-by-element properties

    Hi, Is it possible in a model containing solid elements to specify material properties to individual elements (ie poissons ratio and Young's modulus)? I have read about the *distribution and *element properties keywords but these seem to only be applicable with shell elements. Thanks, Andrea
  6. andrearrd

    mass data

    How do I print the model mass data (location of center of mass, moments of inertia etc) for a model to the .dat file? thanks, andrea
  7. andrearrd

    Node numbering

    thanks for your reply. I am not sure what the problem was. I just restarted my model from scratch and it seems to be working now. thanks a lot anyways! andrea
  8. andrearrd

    Node numbering

    Hello everyone, I am working on an FE model whcih has a global model which then drives a local model. I am coming up with an error which ive never seen before, as when I run the local model job it says that "the node numbering might not be correct for element # instance 'name'" where # is an...
  9. andrearrd

    SUBMODELING

    Hey guys, I have a question regarding submodeling. I have a complete shell model of a stiffened panel, and have conducted postbuckling analyses of it succesfully. Im now trying to make a local model of a region of this panel. I followed the guidlines in the manual, and as a starting point my...
  10. andrearrd

    Reading data in an external file

    Thanks for that but it only works partially. Its strange cos using the *INCLUDE, FILE= line works when I put the composite stacking sequence definition in an external file and then read it in after the shell section definition. However for the DSLOAD option it doesnt work (just says that I...
  11. andrearrd

    Reading data in an external file

    Hi Drej, thanks for your answer. Are you sure about the *INPUT line?? It is not an ABAQUS keyword. I have had no success in solving my problem. I have tried reading form an external file in the *NODE line, by having *NODE, INPUT=nodes and having my node definition in the file named "nodes"...
  12. andrearrd

    Reading data in an external file

    Hi everyone. I am trying to read data from an external file into my ABAQUS input file. i have read up on the *INCLUDE, INPUT= option and understand its function. However, my problem is this: I have a DSLOAD, and the input file is as follows: *DSLOAD __PICKEDSURF33, EDNOR, 0.175 Now, instead...
  13. andrearrd

    homogenizing a composite

    Hi, I have the following problem. I have a certain layup, composed of, for example, 10 plies stacked at different angles (ie a laminate). I have all properties including ply thicknesses. If I have for instance a block of this layup, is there any simple program available that will allow me to...
  14. andrearrd

    coordinate systems

    oh and Id like to add that since my model contains 3d solid sections with the composite option, I am not able to obtain the results from the odb and then transform them here on a coordinate system based on the deformed shape. andrea
  15. andrearrd

    coordinate systems

    Hi, I would like to know if it is possible to create a coordinate system that "moves" with a model as it deforms. It is to my understanding that this is not possible, having done a search on this forum on related topics and reading the user guides. If i have, for example, a plate that is in...
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