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  1. ajroman

    Meshing strategy for merged instances

    I am having some trouble meshing a merged part and would like to hear of a few strategies on how to approach/solve my issue. I am trying to make a unit cell model of a 3D weave composite structure. I first created the unit cell’s fiber architecture by compressing a previous model and taking its...
  2. ajroman

    Fabric Compression

    Thank you for the help once again. Just to clear some things up, the initial model's geometry is not an actual representation of the weave. To achieve an actual representation, we need to eliminate all the excess spacing in the model as well as further compressing it to its actual weave...
  3. ajroman

    Fabric Compression

    Hello, A little over 2 months ago I posted a thread asking for help with a model that I was working on that dealt with fabric compression (Original Thread: http://eng-tips.com/viewthread.cfm?qid=255686&page=1). Since then I have slowly inched closer at a solution but have yet to fully compress...
  4. ajroman

    Convergence for Contact

    Response on thoughts: 1. I agree, should I breakdown the analysis into additional steps to improve results/help convergence? 3. Would reducing the plates to planer elements help in the analysis step by eliminating additional computations? 4. Surprisingly yes. 7. This boundary condition was...
  5. ajroman

    Convergence for Contact

    Please use attachment below to view file. Thanks.http://www.4shared.com/file/141046890/ee99a2f0/CT_Dimensions_Squash_11.html
  6. ajroman

    Convergence for Contact

    I can't upload the file to engineering.com. I believe the file size is too large to upload (14 MB). I've tried using automatic stabilization for both the initial and first step of the analysis and still no luck with convergence. Is there another way I could pass along this file onto you to take...
  7. ajroman

    Convergence for Contact

    I am having trouble with getting my model to converge during a static, general contact problem. Does anyone have any tips/suggestions? I have tried to reduce the initial and min. increment values but I have gone as far as I can compute (e-40) and received an error message stating the increment...
  8. ajroman

    Preventing Penetration during Contact

    Hello All, Does anyone have any suggestions/tips on preventing penetration between two deformable bodies during a hard contact analysis? The follow thread contains additional information on the problems set up: http://www.eng-tips.com/viewthread.cfm?qid=255686&page=1 When I view the results...
  9. ajroman

    New to Abaqus, Please help

    Yes, the fabric needs to match the same thickness of a dry mat, therefore, the warp (longitudinal yarns) and weft (lateral yarns that weave throughout the warp yarns tying the multi layers together) need to deform and mesh together as they would in the manufacturing process. I am having the...
  10. ajroman

    New to Abaqus, Please help

    Hello All, I have recently started working with Abaqus and have been assigned the task pertaining to 3D composite materials from the unit cell size level. We have used an outside program to import the exact unit cell model into Abaqus, so all the preprocessing is completed. The problem lies...

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