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  1. cdeepakroy

    HELP ! URGENT ! Export deformed shape into any CAD format from ABAQUS

    Hello all, Below is the snippet of python code that i used to export the deformed shape in the VTK file format : ******************************************************** # create odb object from odb file outputDatabase = session.openOdb(name= ImplantAnalysisJob.name + '.odb' ) # get access...
  2. cdeepakroy

    HELP ! URGENT ! Export deformed shape into any CAD format from ABAQUS

    Hello all, Thanx for your contributions to the discussion. I have solved the problem, by writing a python script. The code was very simple and straighforward. I just read the displacements from the output data base object. And i add the displacements to the respective nodal position...
  3. cdeepakroy

    Breast Implant Modeling using FEA in ABAQUS --- How to ??? Your Ideas

    Hello, I come from a computer science background and hence I am new to both finite element analysis and ABAQUS. GOAL ---- I want to study the deformation/change in the shape of a breast implant under the action of gravity. According to the shape, Breast implants are of two types: 1. Round...
  4. cdeepakroy

    Please Help ! URGENT - Tetrahedral Fluid Elements --- How to assign ??

    Hello Corus and Brep, Thanx a lot for your prompt inputs. The application i am trying to solve is ---- i want to see how a breast implant responds to gravitational load. Using the simplest approximation possible, A breast implant is like a balloon which is filled with saline solution. There...
  5. cdeepakroy

    Please Help ! URGENT - Tetrahedral Fluid Elements --- How to assign ??

    Hello corus, Thanx a lot for the reply .... Now im a lil confused .... Im actually new to both Finite Element Analysis and ABAQUS ...... I am actually using an open-source automatic tetrahedral mesh generator called TETGEN ( url: http://tetgen.berlios.de/ ). The library takes a hemispherical...
  6. cdeepakroy

    Please Help ! URGENT - Tetrahedral Fluid Elements --- How to assign ??

    Hello, I want to model a hemisphere filled with saline/water, and see how it responds to gravitational load. BOUNDARY CONDITION - The base plane of the hemisphere is totally fixed. Load -- Gravity is applied to the whole body in the negative y-direction. I am using a mesh consisting wholly...
  7. cdeepakroy

    HELP ! URGENT ! Export deformed shape into any CAD format from ABAQUS

    Thanks a lot for the reply johnors. Yes i was thinking about that as a last option. But dont you think --- the ability to export the deformed shape into a standard 3D/CAD format is a very basic facility to provide. Im sure many people want to read back the deformed shape for a variety of...
  8. cdeepakroy

    HELP ! URGENT ! Export deformed shape into any CAD format from ABAQUS

    Hello, Is there a way i can export the deformed shape resulting form the FEA analysis in ABAQUS in a standard CAD format ??? Right now, i can view the results in the ABAQUS visualization module and the simulation appers to be right. But I did not find any way in which i can export the...
  9. cdeepakroy

    Please help....How to import VRML models into ABAQUS

    Hello, Thank you very much for the help Johnhors. Well, the problem of my 3D vrml mesh being imported as 2D deformable aprt in abaqus is solved, by changing the ABAQUS input file as you suggested. But i have a new problem. The Analysis fails due to the following errors and warnings...
  10. cdeepakroy

    Please help....How to import VRML models into ABAQUS

    hello, Thanks for the help johnhors. I could successfully export the VRML model into abaqus input format after building a surface mesh. but there is one problem. It is being imported in ABAQUS as a 2D deformable part Where in i want it to be imported as a 3D deformable shell in abaqus. How...
  11. cdeepakroy

    error during job analysis in ABAQUS

    Hello, Thanks for all the usefule replies. Whenever i try to import a vrml 3D surface mesh into abaqus, it gets imported as a 2D deformable part. I want it to be imported as a 3D deformable shell ? How do i do this ? Should i change anything in the ABAQUS input file ( *.inp ).... Please...
  12. cdeepakroy

    error during job analysis in ABAQUS

    hello, Thanks for all the useful reply. As you all suggested, i refined the mesh in the areas of high curvature but still it didnt help. Then i cutted out mesh portions with normals in the negative direction. Now it worked ! thanks to you all. Analysis succeeded now. but now there is a...
  13. cdeepakroy

    error during job analysis in ABAQUS

    hello, thank you very much for the informative reply harry. What do you exatcly mean refining the mesh. should i increase or decrease the mesh density by subdivision or decimation. At the first place, i dont understand what the error means. Can anyone tell me, what the error tentatively...
  14. cdeepakroy

    error during job analysis in ABAQUS

    Hello, Thanks for the informative reply harry. I tried decimating my VRML model and imported it again into abaqus, but still the same error comes up when i execute job analysis. Below is the error: "The area of 385 elements is zero, small, or negative. Check coordinates or node numbering, or...
  15. cdeepakroy

    error during job analysis in ABAQUS

    hello, Thanks for the prompt and informative reply corus. I dont understand one thing, how can i view the elements in the ABAQUS Viewer( Visualization ) mode before the job analysis succeeds. If i try opening the visualization module, abaqus doesnt show anything and keeps complaining the no...
  16. cdeepakroy

    error during job analysis in ABAQUS

    hello everybody, I imported a VRML mesh model ( of a female human body ) into abaqus. I applied a downward body force to a few regions in the model. When i perform stress analysis, ABAQUS gives the following error: - The area of 1605 elements is zero, small, or negative. Check coordinates...
  17. cdeepakroy

    Please help....How to import VRML models into ABAQUS

    Thank yoy very much johnhors. It works now. Thanks everyone for helping me out. In any case, please inform me if you find any conversion tool from vrml to cad format so that i dont have to buy the whole Finite Element Analysis Software Tool, just for converting between two file formats...
  18. cdeepakroy

    Please help....How to import VRML models into ABAQUS

    Thanks for the informative reply and help. I downloaded the evaluation version of Roshaz software. even though Roshaz software imports VRML. It does not export into Abaqus input file format, it only supports export into STL files. And ABAQUS cannot import even STL files as parts. What should i...
  19. cdeepakroy

    Please help....How to import VRML models into ABAQUS

    thank you very much for the quick reply john. But i have a few more questions to ask. Roshaz is a commercial software and i am not sure if the evaluation version does this. Can you tell me if there are any free 3rd party tools available for doing this job. As you might have unserstood, my...
  20. cdeepakroy

    Please help....How to import VRML models into ABAQUS

    Hello everyone, How can i import VRML model geometry as parts into ABAQUS ? Please suggest if there are any alternatives also. I spent quite a lot of time on the internet finding an answer to this question and i find no support in this regard. Please help me. thanks in advance. deepak

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