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  1. navigator30

    explicit

    yes, I'm quite sure. In the steps I compare, I only put some pressure on the parts. First I calculated the problem statically and then qausi-statically in explicit. -It_s a contact problem
  2. navigator30

    explicit

    Thinking about it, it is also strange because reduced Integration elements are used, and therefore the stresses should be smaller.
  3. navigator30

    explicit

    Hi guys, can anyone explain to me why the stresses calculated in Expicit are greater than the ones in Standard when doing a quasistatix analysis? Is it because the mass is taken into regard? Thanx, navigator
  4. navigator30

    restart analysis

    Hi Corus, thanx for your reply, so would the input file be like that? *HEADING ** Job name: myjob Model name: mymodel *RESTART, READ, END STEP *STEP,name=mystep *DYNAMIC, EXPLICIT , .1 *RESTART, WRITE, NUMBER INTERVAL=1 ** ** FIELD OUTPUT: F-Output-1 ** *Output, field, variable=PRESELECT **...
  5. navigator30

    restart analysis

    Hi guys, can anyone explain to me how to restart an explicit-analysis? What I do is: -take the original Input file with all the steps and loads, upload it into CAE -then go to load module, and input in the field dialog box an initial state from the aborted calculation -then write a new input...
  6. navigator30

    Distorting elements

    Hi guys, I'm having big time trouble analysing a soft layer being pessed together by two hard parts (contact) and then the upper part being traccioned to one side, so that friccion forces act between the layers. The problem is, that there are up to 1000 eigenvalues and the soft layer elements...
  7. navigator30

    Displacement in Explicit

    Hi guys, I've got a problem understanding my Abaqus Explicit results. I apply on one face of my part a dicplacement condition, say 50 mm and let that step run in Explicit. In the contour plot at the end of the step, I print the output for the displacement in that same direction at that same...
  8. navigator30

    Gasket material

    Hey everybody, I'm trying to model gasket material (FEM) but don't know, it's properties. Can anyone help me out on that and give me at least some "out of experience"-values? What I know about the material is that its an elastomer (NBR) filled with carbon fibers, which are oriented as a result...
  9. navigator30

    Negative Eigenvalues

    Hi guys, I've read already quite a lot on how to avoid Negative Eigenvalues in contact problems and tried to consider all the advices in my simulation but this problem still occurs. What I do is put a normal load on one piece in one step and then apply a traction load. The eigenvalue - problem...
  10. navigator30

    hybrid elements

    thanx, xerf!
  11. navigator30

    hybrid elements

    I'll try my question in a separate thread, maybe anyone can anwer it. I read abaqus documentation a couple of times now, but haven't quite gotten it wether to use hybrid elements for an elastomeric material or rather reduced integration elements. The material is subjected to shear forces, would...
  12. navigator30

    one element different

    so corus Ihave read the "book" og abaqus documentation a couple of times now, but haven't quite gotten it wether to use hybrid elements for an elastomeric material or rather reduced integration elements. The material is subjected to shear forces, would that do some hourglassing effect, or does...
  13. navigator30

    one element different

    well thanx for your answers everybody!
  14. navigator30

    one element different

    Hi guys, I've got a question on something I noticed after doing a calculation. When I look at the results in the contour plot at one location one element displays entirely different than the surrounding ones. To make myself clearer: I have calculated a contact problem with friction. Then the...
  15. navigator30

    too many atempts

    it's a bit late, but thanx for the answers guys! I'm gonna try - didn't have time yet to do so. navigator
  16. navigator30

    too many atempts

    I have an assembly of three flat parts that are loaded on top of the thirt part. Additionally I want to move that part for 2 mm, thats not too much as I think but after 0.7mm I get the too many attempts message
  17. navigator30

    too many atempts

    I'm having a big problem with the convergence of my contact model. Every calculation is aborted with the note "too many attepts", what can I change to either to let more attempts be made or ....well I don't know. What can I do????
  18. navigator30

    defining node set

    Hey everybody! I've got the following question: I'm working with ABAQUS CAE or the python scripting and would like to define node sets in the way that I say: the node set includes all nodes that are having the z-Coordinate equal to 10. I also would like to give another number to the nodes than...
  19. navigator30

    pre memory

    I get the following error message: IT IS NOT POSSIBLE TO ESTIMATE THE TOTAL AMOUNT OF MEMORY THAT WILL BE REQUIRED. PLEASE INCREASE THE VALUE OF PRE_MEMORY CAn anybode tellme what to do??? thanx a lot!!
  20. navigator30

    Contact-ErrorMessage

    Hi! Yes I have defined steps, I'm having an initial step and my load step. But I just realised that the error message occurs when I click on LOad Cases instead of Loads. But what´s the difference between them? And annother thing. My calculation gets aborted every time I run it. The error...

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