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  1. mika3049

    Low cycle fatigue with Explicit?

    Hi, I need to model repeated impacts fatigue. Balls hit a surface with interval 1 sec, one after another. Damage begins after 200...10.000 hits. A single impact is modelled with Abaqus Explicit. To model 5 impacts, i can make 5 steps, for instance. But I can not use Low Cycle fatigue Step in...
  2. mika3049

    Saving ODB File by Python: error attempt to truncate read only table

    Thank you!
  3. mika3049

    Saving ODB File by Python: error attempt to truncate read only table

    Hi, I want to read ODB file and then add a field, and save the resulting ODB file. The coode is very easy (given below). But I get the error message: OdbError: database save failed. **error attempt to truncate read only table. Probably, the problem is in the ODB file, not in code itself. Has...
  4. mika3049

    Creating new Field in ODB File

    Hi, I am trying to create new field in ODB file. But for testing purpose, I just decided to read "old" stress field and re-create it as new one. So, I read S23 from ODB, create array (Element label, time, stress 23), and create new Field with the same values. When I print out the values (Elt...
  5. mika3049

    Low cycle fatigue/Direct Cycling: Input and Output

    Hi, I would like to ask for some advices on Direct Cycling. First, defining the sinusoidal load. I define it in 3 places: (a) as Cycle Time Period in Step, (b) in Amptitude (Circular frequency and Initial amplitude, A and B), and (c) in Load (Magnitude). Somehow, Lets say, I have a sinusoidal...
  6. mika3049

    Abaqus/Python - commands to find nearest node to a given point

    Thank you. Indeed, now my PY file runs also. I still dont understand why it did not run before, and started now. Anyway, thank you very much.
  7. mika3049

    Abaqus/Python - commands to find nearest node to a given point

    I tried, it didnt work. But when I add in the "name=" the ODB file, it works (although it is wrong file, and the command gives wrong results). Can it be that this command works only with ODB files, and, thus can not help to build CAE file via Python code?
  8. mika3049

    Abaqus/Python - commands to find nearest node to a given point

    My purpose is to write a Fotran code which output is this Python comman file. However, while the code works sometime when I copy/paste it from text, the Fortran produced PY file gives always the error.
  9. mika3049

    Abaqus/Python - commands to find nearest node to a given point

    Thank you very much. in fact, it is quite strange. Sometime, the code gives an error: File "SMAPyaModules\SMAPyaPluginsPy.m\src\abaqus_plugins\findNearestNode\nearestNodeModule.py", line 71, in findNearestNode AttributeError: 'NoneType' object has no attribute 'instances. But sometimes it works...
  10. mika3049

    Abaqus/Python - commands to find nearest node to a given point

    Thank you very much. Yes, it is probably correct - the problem might be with "name" argument. But this code is a part of a large code of CAE model generation. So, no ODB file exists when I run this PY file at Abaqus. What should I then place in name?
  11. mika3049

    Abaqus/Python - commands to find nearest node to a given point

    Hi, I need to write a python comman code to find a node (in a given set), nearest to a given point. The code now looks as follows: import sys sys.path.insert(10, r'c:/SIMULIA/Abaqus/6.13-3/code/python/lib/abaqus_plugins/findNearestNode') import nearestNodeModule...
  12. mika3049

    Structured mesh of 3D model "particles in a box": how to do it?

    Hi, Mustaine, now I tried to follow your advices. The techniques with "display group otion" works very well indeed. So, I can hide/show Cells which were connected into the Total body (by boolean merging parts). But when I try to define free tet mesh and Mesh seeds on the parts, the system says...
  13. mika3049

    Structured mesh of 3D model "particles in a box": how to do it?

    Thank you very much!
  14. mika3049

    Structured mesh of 3D model "particles in a box": how to do it?

    Thank you very much! How can I hide the box, and keep particles on display? Since the "matrix" and particles are merged, they are one instance/one part. (When I merged matrix and particles, the initial instances are supressed) Or do I miss something?
  15. mika3049

    Structured mesh of 3D model "particles in a box": how to do it?

    Thank you. But how can I define the fine mesh in the particles inside the box, and rough mesh on the faces of box? In Patran, you make fine mesh seed on some parts and rough mesh seed on box, and so you have it. In 2D simple case, you can also make fine mesh seed on the boundaries inside the box...
  16. mika3049

    Structured mesh of 3D model "particles in a box": how to do it?

    More exactly: I mesh a Part Matrix and parts Particles, and then Merge them (into new Instance Total). But when I apply load to Total, and run the model, the CAE gives an error - "TOTAL is not meshed".
  17. mika3049

    Structured mesh of 3D model "particles in a box": how to do it?

    Hi, I am trying to design 3D structured mesh of unit cell model of a material. The model is built as several particles (of complex shape) in a 3D cubic box. I generated Parts, Instances, Sections of the particles and the 3D box, and also produced a Part Matrix (by boolean cutting the instances...

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