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  1. Cansand

    Permissible Failure Pressure Ratio for Classes 3 &4

    Hello, Can anyone please confirm (or provide reference materials) concerning the permissible (failure pressure/MOP) ratio of corroded pipe section for class location, 2, 3 and 4 by 49 CFR 192 (and ASME B31.8). This ratio basically dictates the need for repair criteria for corroded pipes...
  2. Cansand

    On tailings dams

    Can anyone guide me to any source giving some general statistical information concerning tailings dams systems. I want to get some sense (imagination) about average properties of these huge geo-systems concerning Geometry [ultimate height, type (upstream/downstream), slope of the embankment...
  3. Cansand

    Hyrdaulic Conductivity in Shelby Tube.

    If critical project why not trying to follow one of the field test :estimating the permiability on site
  4. Cansand

    Determining adequate depth of soil boring

    I 've been always wondered that there are no rules or straightforward guidelines on very common and conventional geotechnical things that engineers come across daily /or at least weekly . For example.. every project we come across the technical question (keep the budget aside): How many...
  5. Cansand

    Coorelation between Direct and Triaxial Mohr Coloumb Parameters

    Let me explain to you my point: Most of geotechnical engineers commonly overlook an important matter when analyzing geotechnical problems under Plain Strain mode (Biaxial mode) .e.g. 2D deformation analysis of Slopes , Tunnels , embankment and foundation and so on. They implement shearing...
  6. Cansand

    Coorelation between Direct and Triaxial Mohr Coloumb Parameters

    Hello I have Mohr-Coloumb strength parameters ,friction angle and cohesion, obtained based on Triaxial Test results ( axisymmetric loading case). Can the Direct shear test parameters be obtained from the Triaxial Shear strength Parameters.If yes, Please refer me to the related literature Thanks
  7. Cansand

    fluid pressure and metal plasticity

    In terms of elasticity : For stress strain curve ,do you have loading and unloading paths If you do not have unloading path then this would be the only way to get elasticity modulus if you only have stress-strain curve data. Alternatively, You may want to get the approximate elasticity modulus...
  8. Cansand

    fluid pressure and metal plasticity

    Alright You can use simple elasto-plsaticity model that is temperature-dependent Get the young modulus from the stress strain curve. If you notice the Curve, you find it at early loading stage linear. So get the slope of this linear part of the curve . That will be your Young modulus (E )if...
  9. Cansand

    fluid pressure and metal plasticity

    What model are you using in ABAQUS ? what material data do you have ? For the fluid pressure: you can simulate it by applying hydrostatic pressure on the edge (surface) of the metal part this fluid pressure operating on.
  10. Cansand

    fluid pressure and metal plasticity

    For applying Fluid pressure: are you analyzing porous medium..?
  11. Cansand

    fluid pressure and metal plasticity

    For modelling metal: It depends on the Loading (Cyclic or static) and on the Lab data available to you Do you have creep results? Conventional insenstive to hydrostatic pressure model ,e.g , Tresca (or Mises) with isotropic hardening can be used if you only have Stress-Strain curve under...
  12. Cansand

    Uncoupled heat transfer analysis

    You apply Temperature BC at the outer surface of the pipe contacting the water (that is the temperature of the water [we assume it fixed])and the Temperature BC at the outer surface of the pipe contacting the Air (that is the temperature of the air [we assume it fixed])and given the thermal...
  13. Cansand

    Two Questions on PEEQ

    If you have two materials (different properties) connected by interface displacement elements then you would have this strain-jump but the displacements and the stresses should be the same.. should not they..? please check and let us know..
  14. Cansand

    Numerical singularity error

    dog2k5 I do not understand exactly what you are doing, but if you define them as two seperate parts, you need to decide what kind of bonding should exist between them: full bonding (Tie) or with interface properties (allowing sliding at the interface)that you should reasonably estimate based on...
  15. Cansand

    Numerical singularity error

    Numerical singularity would mean zero stiffness which in turn could be due to insufficient constraining of the material, buckling of a point in your system (geometry -caused such as a weakness pont (imperfection) or it could be due to the high distortion of the material point.
  16. Cansand

    Hourglass Stiffness of Reduced Integration

    Any one can give guidlines on assigning Hourglass Stiffness whose use is associated with using Reduced Integration elements. I completely do not know how to specify appropriate and convenient values for obtaining convergence without affecting accurecy. The matter is limitedly explained in the...
  17. Cansand

    Showing the dimensions

    I want to display (print) them on the model
  18. Cansand

    Displaying and costumizing the axes

    My model has many rectangular simple shapes therefore if I plot the dimensions lines it will become very busy and messy. I thought of just showing the axes numbered and scaled in the model screen with only few major dimensions I add on the model . This is illustrative enough. can I show the axes...
  19. Cansand

    Showing the dimensions

    Is there anyway to show the dimensions in the visualisation module or at least in any other module other than the Sketch. Thanks
  20. Cansand

    Memory Allocation

    I was in the visualization mode animating the results and extracting some graphs and suddenly the model disappear and I got the message in the ABAQUS message box underneath " Warning: Operation did not complete due to a memory allocation failure" What is the best cure for this issue

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