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  1. SM1994

    issues with abaqus example "Fully coupled thermal-electrochemical procedures"

    ...did not start and the following error was observed: “Permeability is specified on 61 elements but the initial void ratio is not defined. Use *initial conditions to the value. The elements are identified in element set ErrElemPermNoInitVoidRatio. Unidentified or invalid output request...
  2. SM1994

    Resultant Shear Stress in ABAQUS

    Your solution resolved my issue. I created a new field output based on the existing field outputs. Thank you so much
  3. SM1994

    Resultant Shear Stress in ABAQUS

    Thank you for your responses. I need field output. The filed output generates the resultant shear force. Is it possible to define a field output that dived this resultant shear force by the corresponding element area? Since I need resultant shear stress rather than resultant shear force. Thank you
  4. SM1994

    Resultant Shear Stress in ABAQUS

    Hello I am wondering if there is any way to visualise the resultant shear stress on a part? I have two objects in contact and produce shear stress in different directions. Like CSHEARF magnitude force, I wonder whether there is any way to calculate the resultant shear stress on the surface...
  5. SM1994

    Problem in boundary condition to move object as the result of external pressure

    Thank you for your help. You are right, the density unit was wrong. I changed it and it is working ok.
  6. SM1994

    Problem in boundary condition to move object as the result of external pressure

    Hi I have attached the CAE file. You can download the ODB results from here. Yes, it can be said that object A is a bone, object B is a residual limb and object C is a socket for that. Object A has steel properties. Objects B and C have hyperelastic properties...
  7. SM1994

    Problem in boundary condition to move object as the result of external pressure

    Thanks for your response. I have checked with displacement control, but there was no difference. Since the change in the stress on contact between objects B and C is absolute zero. there should be an initial clearance, then after applying the force and the object B comes down, B and C should...
  8. SM1994

    Problem in boundary condition to move object as the result of external pressure

    Hello I am trying to simulate a force being applied on a cylinder inside an object encompassed by another semi-conical shape object. Sorry, to make the explanation clearer, I named the parts (objects) inside the model and attached its image. Similar to the attached image: Object A is tied inside...
  9. SM1994

    Why trust-region-reflective algorithm in fmincon require a gradient as input in MATALAB

    According to Matlab fmincon documentation, the 'trust-region-reflective' algorithm needs to specify the objective gradient. I read the algorithm explanation but yet, I cannot understand the reason for that. 1- Why does it need gradient as input? 2- Does the objective function have to be...
  10. SM1994

    Fill a gap between two surfaces, using pressure as variable

    Thank you Mustaine3 for your response.
  11. SM1994

    Fill a gap between two surfaces, using pressure as variable

    Perfect, thank you for your response.
  12. SM1994

    Fill a gap between two surfaces, using pressure as variable

    ...which I am sure it is way more than enough and ABAQUS solve it in 120 increment (0.5 time step, and no backward increment). Let`s assume that touch occurred at the increment 40 (equal to time 20), in this case the pressure at the contact is: P= (500*40)/120 = 167 kPa is it what you mean...
  13. SM1994

    Fill a gap between two surfaces, using pressure as variable

    Hello According to the attached picture, I have two surfaces (Master surface and slave surface) where there is a gap between them. The slave surface can be inflated with the pressure "P". I aim to find an appropriate "P" magnitude to fill the gap and only TOUCH the master surface without...
  14. SM1994

    Measuring the Hessian matrix for lsqnonlin in MATLAB

    Hello In MATLAB, I am optimising a multiobjective function using the lsqnonlin function with the trust-region reflective algorithm. I was wondering how I can get the hessian matrix as an output? Matlab provides a matrix of Jacobian,is it possible to calculate Hessian matrix using the Jacobian...
  15. SM1994

    Map PointCloud to the mesh in visualisation module

    Thank you so much, I will have a look into that. I am wondering does it interpolate the result for the nodes that I have not defined? For instance, my analytical solution returns the result for 60 nodes out of 500 nodes. Does Abaqus interpolate to visualise the rest of 440 nodes, or it will not...
  16. SM1994

    Map PointCloud to the mesh in visualisation module

    Thank you for your response. However, I am still not sure what I should do, or even I am doing it right. I define my model (including mesh and loads etc), then in the property module, I define my map field. XYZ matrix coordinate and filed is my analytical displacement (gold standard). Then I run...
  17. SM1994

    Map PointCloud to the mesh in visualisation module

    Hello I have 3D point clouds obtained from 3D image reconstruction, and I have also run a simulation with Abaqus and got the result. I am trying to map the points obtained from the point cloud on the mesh and show them. I followed the instruction in the documentation, but I do not know how can I...
  18. SM1994

    ABAQUS Index numbering for the surface

    Hello I am trying to use python script to generate new surface in order to apply pressure on it using script. I use the: session.journalOptions.replayGeometry session.journalOptions.setValues(replayGeometry=INDEX) to achieve the index number, but the problem is that I cannot understand the...
  19. SM1994

    Find the ID for faces.getSequenceFromMask

    Thank you, There was a problem with the coordinates, which has been resolved. Thanks for the solution.
  20. SM1994

    Find the ID for faces.getSequenceFromMask

    ...19.526271), )) but I expect to get the following code work: (note that 0.785398 is the RAD of 45 DEG and I am assuming that it is (x,y,z) Tsin=85*sin(0.785398) Tcos=85*cos(0.785398) s1 = a.instances['CylnderPart-1'].faces side1Faces1 = s1.findAt(((85.0, 0, 21.0), ), ((-85.0, 0...

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