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  • Users: Jlog50
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  1. Jlog50

    Understanding Abaqus memory usage

    Hello all, I am using Abaqus 6.10 and have 3GB on my machine, I have 32bit Windows XP. Reading through the manuals, I just wanted to make sure I understood this correctly.. Is 2GB's the maximum memory I can allocate to an analysis for a machine with up to 8GB (this is what the manual says but...
  2. Jlog50

    Elastic-Perfectly plastic material models

    I am trying to find out more information regarding elastic-perfectly plastic material models. I am considering the FE analysis of metals and looking can I apply a elastic-perfectly plastic material model to my analysis? Thanks.
  3. Jlog50

    Advice for contact elements in Abaqus

    Hello all, I am currently modelling 3D hertz contact problem in Abaqus. The manual does not give much advice on contact element types for contact problems. The contact is finite sliding (likely to be more than small sliding), penalty tangential behavious (COF = 0.1), "Hard" normal contact...
  4. Jlog50

    ASTM F75-07

    Hello all, I am trying to find the stress-strain data for Cobalt-Chrome 28. I have found th ASTM standard ASTM F75 - 07 Standard Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Castings and Casting Alloy for Surgical Implants (UNS R30075). My organisation does not currently have...
  5. Jlog50

    Plotting nodal and elemental solution in viewpoint

    Hi all, I can produce a report of the nodal and elemental stresses, but is there anyway of plotting a viewpoint plot of the nodal and elemental solution at a time increment. I would really appreciate some help on this. Thanks.
  6. Jlog50

    Adaptive remeshing techniques

    Hello all, I am trying to learn more about remeshing techniques in FEA. I am using ABAQUS, and the programme does not seem to allow adaptive remeshing (i.e. mesh refinement) for 3D models using hex elements. Is this the same case for all FE software? If so, anyone know why this is? Is it a...
  7. Jlog50

    Quasi static analysis error

    When trying to run a Quasi static analysis, I get the following error message: Machine precision requires a time step greater than 2.22000e-16 When I run this problem as a static and dynamic implicit analysis it seems to run without any errors Anyone know how to solve this. thanks.
  8. Jlog50

    Parametric study meshing strategy

    Hi all, I would like to discuss about the importance of meshing in parametric studies, I know that the mesh strategy has the utmost importance in producing good results, however, how important is it for parametric studies (especially ones which are non-dimensional, i.e. results are presented as...
  9. Jlog50

    Meshing for parametric studies

    Good afternoon all, I would like to discuss about the importance of meshing in parametric studies, I know that the mesh strategy has the utmost importance in producing good results, however, how important is it for parametric studies (especially ones which are non-dimensional, i.e. results are...
  10. Jlog50

    Help with modelling problem in abaqus explicit

    Hello, I am trying to model two bodies in contact which impact one another at a rather slow rate. When i run the problem in abaqus explicit it seems to run for a very long time and I do not reach a solution, when I model the problem in abaqus standard it solves in about 2 hours. Also, if the...
  11. Jlog50

    Shakedown of structures

    Hello all, I know that if a material is loaded beyond its yeild strength then shakedown theory can be applied to studying the material behaviour under cyclic loading.For materials in contact if the sub surface stress does not reach yeild, however, the surface asperities undergo plastic...
  12. Jlog50

    Difference between S, Pressure and Contact Pressure

    I understand that Contact Pressure is the pressure on the surface, but I am not sure how you would use S, Pressure from the Stress Outputs. Does anyone use this and know more about this variable? Thanks
  13. Jlog50

    Understanding surface plastic deformation

    Hello all, I am hoping to start a discussion on surface deformation and Shakedown theory. I know that if a material is loaded beyond its yeild strength then shakedown theory can be applied to studying the material behaviour under cyclic loading. For materials in contact if the sub surface...
  14. Jlog50

    Using FE to determine residual stresses

    Hello all, I was wondering if anyone has any experience of guidance on using FE (I am using Abaqus in particular) to study residual stress in a component between cyclic loading. Also, is there any material out there with examples? Thanks
  15. Jlog50

    Copying a complete model database to another abaqus cae window

    Hello all, Does anyone know anyway of copying a model from the cae window to another abaqus file? Everything I run an analysis from cae, abaqus just shuts down with no error message or reason I can see. I was going to try moving the whole database to a new file and try again. I think the...
  16. Jlog50

    Good engineering practice

    Hello all, I am doing some work which involves an associative link between solidworks and abaqus (FE), i.e. design iterations after analysis. I have a number of components in the assembly. Is it good engineering practice to model and do all of the assembly in solidworks rather than abaqus? Any...
  17. Jlog50

    Adaptive meshing with linear geometry

    When I use ALE adaptive meshing in abaqus, I get the following error message when running the analysis: THE *ADAPTIVE MESH OPTION MAY NOT BE USED IN Abaqus/Standard ANALYSIS STEPS WITH LINEAR GEOMETRY My model has two flat surfaces in contact, is there anyway I can use adaptive meshing for...
  18. Jlog50

    Issues with Solidworks-Abaqus Associative link

    Hello all, I am starting to us the Abaqus Associative link module, developed it seems by by thost behind Abaqus. I am trying to link a simple model into abaqus from solidworks, so when I run an analysis I can make a change without having to reimport and remodel the geometry. The problem is...
  19. Jlog50

    Understanding a Static vs Dynamic problem

    Can anyone provide background the choices between a static and dynamic problem, are there any good books/literature on this. Thanks.
  20. Jlog50

    Understanding Static or Dynamic Analysis

    Hello all, I have a problem where I apply time depenent loading and angular displacement to my model. I have run static analysis and dynamic implicit analysis but my results seem to be very similar, is this expected? Does anyone have any input on static vs dynamic analysis using FE? Thanks

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