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  • Users: krishnagoud
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  1. krishnagoud

    Finite sliding Contact between poroelastic bodies

    Dear all, First of all, I would like to appreciate the kinda response the people are giving in this forum. I learned a lot from this. Description of my question: I have modeled 3D complicated knee geometry where the poroelastic soft tissues are in contact with each other and also with its...
  2. krishnagoud

    How to get average of certain field output for a prescribed set ?

    Hi, I would like to get the average deformation/von mises stress/cpress of a prescribed surface from the odb file. I know that i could write required fileld output from odb to .rpt file with column totals/max/min, but I am wondering is there any way to get average of some field output for...
  3. krishnagoud

    How to make Ellipsoid type model in ABAQUS

    Dear all, For my research, I needed to make some 3d ellipsoid type model and analyze for different conditions. I have the radii available in 2 planes, XY and YZ. I need to make surface with these two radii. Sweep/extrude option doesn't work as it needs a solid sketch in XY plane and sweep...
  4. krishnagoud

    Zero Vol. Flux every where

    Dear all, I always get the warning in a contact problem with two porous bodies(CAX4P-axisymm pore pressure elements) "There is zero VOL. FLUX everywhere in the model based on the default criterion. please check the value of the average VOL. FLUX during the current iteration to verify that the...
  5. krishnagoud

    contact between two poroud mediums

    Dear friends, Greetings ! I am Krishnagoud Manda, pursuing doctoral studies at KTH Mechanincs, Stockholm.I have been using Abaqus FE software for my research,especially in modeling of porous medium. I would greatly appreciate your help if you consider my question. I briefly explain about my...
  6. krishnagoud

    Please help me to solve this problem with porous medium

    Dear all, I am working on modeling of human knee articular cartilage. I have made the model, but i don't understand why the solution is getting terminated ? I can see only one error ***ERROR: TIME INCREMENT REQUIRED IS LESS THAN THE MINIMUM SPECIFIED I am pretty sure that someone of you know...
  7. krishnagoud

    How to apply pressure load in no. of cycles ?

    Hi all, How can i apply a pressure load on a surface in no. of cycles ? I have to use trapezoidal load form over 1 sec and it repeats for 700cysles at 1 Hz. I can apply the load by using *Amplitude ((tabular method) for 1cycle as *Amplitude, name=Amp-1 0, 0.1, 0.05, 1, 0.45, 1, 0.5, 0.1...
  8. krishnagoud

    How to control overclosures and penetrations ?

    Hi all, I am working on simple axisymmetric model where two objects come in contact(friction less) to face the load normal to the contact. Two objects are highly deformable bodies(E=0.69MPa) subjected to compressive pressure 1.2Mpa normal to the contact. deformation can be expected more than...
  9. krishnagoud

    coupling constraint

    I used *Coupling to make sure the one-direction displacements Ui of the nodes on the same line(in 2d axisymmetric model) are the same, but the question is the reference node can not be localized on the line. If i choose a point on the same line as reference node, it is giving a warning saying...
  10. krishnagoud

    How to give INTIAL CONDITIONS(Pore pressure) and void ratio?

    Hi all, I am facing the problem with Pore pressure elements (CAX4P) How can I give initial conditions, like pore pressure and void ratio to the above elements? I think I have to give them in input file. but how?? Would you please explain PHYSICS of that element and input data? I have gone...
  11. krishnagoud

    Problem with ABAQUS HELP?

    Hi, I am facing one problem with Abaqus Help. I have Abaqus version6.5-6 in my department on LINUX operating system (Installed in specific servers). In abaqus help I am not getting any column for searching(where I could type something which required for my analysis). Everytime I have to go...
  12. krishnagoud

    How to assign Element properties in ABAQUS?

    Hi all, In my research I supposed to use CAX4P (Axisymmetric pore prerssure elements) and CAX4. Would you someone please explain about the above element and How can I assign permeability to that element???(permeability is strain dependent) and aslo solid volume fraction? I knew that I should...

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