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  • Users: lopessilva
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  1. lopessilva

    Integrating Keypoints into a mesh

    The keypoint that you create must belong to a line, and that line belong to an area. Then mesh the area. This way ANSYS recognizes the keypoint as part of the geometry, and, as such, recognizes forces and constraints applied to that keypoint and is able transfer them to the mesh for FE...
  2. lopessilva

    analytical solution for a beam loaded with simple bending in places distance from the simetry line

    Hello, I want to obtain analytical solution to a beam loaded with simple bending at midspan. There is an equation, but it´s only valid for points located on the simetry line. I want to calculate deflection along the left edge. I know there is a displacement method that uses the stiffness...
  3. lopessilva

    Hello, I¦m running MATLAB optimi

    Hello, I´m running MATLAB optimization toolbox, and i´m using fmincon function for contrained non-linear minimization. I can run the code with no problems, but it only runs one iteration, and after it stop, saying this message...
  4. lopessilva

    how to save any list APDL command?

    Hello, Try to issue the *vwrite command before /output. This should write the data you want into the file. Check ANSYS help for the sintax. Regards, Hugo Silva Mechanical Eng. PhD student Materials Eng. MSc.
  5. lopessilva

    Path result export

    Hello Andrea, Hello Niels I suspect that you are not saving the results data you are trying to acess. before solving the model issue: outres,all,all Anyway,to get the displacement you should use: *DIM command to issue a dimension for your array *get command to get values on entities, (can be...
  6. lopessilva

    Simple Beam Support

    Hello Rich, The way I would do it is to delete the area, then create keypoint and then several areas by keypoints, in a manner that the areas are created as you want the supports to be on. Let´s say you now have a rectangular area, which is the beam bottom area. You delete the area, create new...
  7. lopessilva

    WORKBENCH CONVERGENCE PROBLEM

    Hello, I´m not a bio engineer, so I will tell you what I know about the error. The error you are obtaining means there is something you need to improve. Usually this error happens when the local stresses on at least one element make the element distortion very high, and the analysis can´t...
  8. lopessilva

    Ansys - Reason for results being different to calculated

    Hello, There are some differences between the analytical method and the FEM. The analytical method is a continuum and normally with stress equally distributed along the object. The FEM considers stress concentration, mainly considering the geometry. The stress concentration factor on ANSYS can...
  9. lopessilva

    Hello, I have selected all nodes

    I´m looking for the correct sintax of the *GET command, or any other command that can do what i´m looking for. Regards, Hugo Silva Mechanical Eng. PhD student Materials Eng. MSc.
  10. lopessilva

    Hello, I have selected all nodes

    Hello, I can select all nodes that I want. NSEL,S,LOC,Z,-0.2 I want to get the maximum nodal z displacement in my node selection. Can you tell me how? I tried to use the *GET command, but with no sucess. I say the other thread, It could not help me either. Regards, Hugo Silva...
  11. lopessilva

    Hello, I have selected all nodes

    Hello, I have selected all nodes with z coordinate equal to -0.2: A=NSEL,S,LOC,Z,-0.2 I want to save the node numbers on a array, and then calculate the maximum Z displacement on the group of nodes. Any help appreciated, Regards, Hugo Silva Mechanical Eng. PhD student Materials Eng. MSc.
  12. lopessilva

    maximum displacement and reaction force sum parameters name in APDL

    Hello, I want to know the name of the maximum z Displacement in APDL commands, and the total reaction force in the z direction, i.e, the sum of every reaction forces for the selected nodes. I know the displacement is UZ, but what about the maximum nodal displacement for the selected nodes? Is...
  13. lopessilva

    selecting Key-points by x,y,z locations?

    Hi, If you go to the select menu, go to select entities, then choose areas. On areas, you have some options. Try the options one by one, and at least one should work! without the ANSYS code, It´s impossible for me to help any better. I suggest you select areas by lines, or areas by keypoints...
  14. lopessilva

    I list z displacement for every substep at once on a nonlinear analysis

    Hello, i´m doing a non-linear analysis, and I have hundreds of substeps. I can only list results for one substep at once. I want to choose for instance z displacement and list it for every substep at once. How can I list results for all substeps at once? Thanks, Regards, Hugo Silva...
  15. lopessilva

    selecting Key-points by x,y,z locations?

    Hello, First, i would list the keypoints, to see which number corresponds to the ones I would like to select. Then, I would copy the keypoint numbers to a text file. If you go to the select menu, then select entities, you can select keypoint by Num/Pick. You just have to input the keypoint...
  16. lopessilva

    High stress concentration in fillet radius

    Hello, It is in fact very interesting that you could solve the problem by changing the constraints. If in this way the DOF constraints are closer to the real behaviour, that´s very good news. Thanks for sharing the solution regards, Regards, Hugo Silva Mechanical Eng. PhD student Materials...
  17. lopessilva

    meshing+kscon

    Hello, I run your code in ANSYS, and unfortunately, I don´t think it is possible to mesh with quadrilaterals. In fact, only regular areas and volumes can be meshed with quarilaterals. I think triangles are the only way to go, but I cannot be sure, as I think there is a way you can circunvent...
  18. lopessilva

    High stress concentration in fillet radius

    Hello, As I understand, you are applied a force (A) which is equivalent to a bending moment. As you are applying the load relatevely far from the support, the critical zone is the zone near the support. However, on geometric discontinuities, such as holes, or in your case, fillets, stress...
  19. lopessilva

    apply ansol for shell163

    Hello, There may be some problem in the mesh, in the point of nodal coordinates recognition by ANSYS. If you are importing a geometry built in a CAD program to ANSYS and then you mesh the model in ANSYS, there may be an issue on the geometry import. I would try another format. If you build the...
  20. lopessilva

    I¦m doing a Non-linear analysis in

    I´m doing a Non-linear analysis in ANSYS mechanical and ANSYS workbench. Can you please tell me my default what are the units of displacement and Force reaction? I think displacement is in m and Force reaction is in N, but i´m not sure. Thanks, Regards, Hugo Silva Mechanical Eng. PhD...

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