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  • Users: Lirock
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  1. Lirock

    Smaller element size means higher secondary stress?

    Hi, I got a question about element size and stress. We know that in the area of geometry discontiguous, boundary condition applying and node force applying, there usually gets secondary stress.According to ASME, if we use Sm for primary stress criteria, then we should use 1.5Sm for secondary...
  2. Lirock

    Using CYCLIC with mixed element type

    Hi,everyone I got a question about the using of command 'CYCLIC'. In my model, there are two types of element,SOLID95 and SHELL93. I used CYCLIC to configue the model as a cyclic symmetric one. But after solution, I found a problem that at the share line of the two elment type, the meshing did...
  3. Lirock

    Apply bending moment on a cylinder meshed with SHELL93

    Hi, A cylinder with internal diameter d=0.09 mm, external diameter D=0.11 mm, and the length L=100mm.One end is fixed,and apply a bending moment 1mm.N on the other one.We can get the maximum deflection equals about 7.56 mm with formula. I did it with ANSYS in two ways: 1. built a mass...
  4. Lirock

    Apply bending moment on a cylinder meshed with SHELL93

    Hi, A cylinder with internal diameter d=0.09 mm, external diameter D=0.11 mm, and the length L=100mm.One end is fixed,and apply a bending moment 1mm.N on the other one.We can get the maximum deflection equals about 7.56 mm with formula. I did it with ANSYS in two ways: 1. built a mass...
  5. Lirock

    Contact problem, no convergence

    Hi, I am learning contact analysis and I have a problem here. I want to constrain an axis by the friction between it and the sleeve, but the solution went a very time without any error or results. I don't know why.Could any one help me to have a check? The following is the commands: /PREP7...
  6. Lirock

    How to classified primary stress,secondary stress and peak stress?

    Hi, I have a question about the classification of primary stress,secondary stress and peak stress in the postprocess after analysis with ANSYS.As we know, in the area displacement constrains applied or geometry discontidiscontinuity, some very large stress would appear, which usually contains...
  7. Lirock

    What's the range of friction factor between steel and concrete?

    Hi, I met a problem,which needs to know the friction factor between steel and concrete. I used 0.4, but someone said it's the maximum value and not saft for calculation.So I wonder the range. Does anyone know it? Thank you! Rock Li
  8. Lirock

    How to calculate the appendiculate force between concrete and plate?

    Hi, I met a question.I need to determine the force between concrete and steel plate in it.I seek information about this, but got nothing. Can anyone give me some advice? Rock Li
  9. Lirock

    Question about periodic symmetry analysis with muti-kinds element?

    Hi,everyone: I did a periodic symmetry modal analysis.The structure contains both solid and shell parts.According to the help file,I used 'CYCLIC' command,which make me have to mesh the structure with 'VMESH' and 'AMESH' commands. I got solid mesh in the solid parts with 'VMESH' using...
  10. Lirock

    How to simulate a vortex with ANSYS-CFD?

    Hi,everyone: I met a problem about CFD. In ANSYS-CFD,the command 'nrotat'is not avalid command. But if I want to simulate a vortex in a tube, which means there is a rotational speed at the inlet. How can I apply the rotational speed and get the vortex in the tube? Thank you! rock
  11. Lirock

    How to display nodal diameter in postprocessor?

    Hi,everyone: I did a modal cyclic symmetry analysis.But in the post1,I can't display nodal diameter.There are just hrm index. If anyone can tell me how to display nodal diameter in POST1?
  12. Lirock

    A qusetion about stress linearize?

    Hi,everyone: I made a model with SOLID95.After solution,I made stress linearize to SX at the same section but with 2 diffrernt 2 nodes path.The section is normal to X aixs. In my opinion,the membrane stress of the two paths should be equal,but they are not. I wonder why,and someone...
  13. Lirock

    Use SHELL and SOLID element together

    Hi,everyone: I made a model with SHELL and SOLID element.After solution,I found peak stress at the connection lines between the two kinds of element.I wonder how to aviod the peak stress.Is there anyone have some ideas about this?
  14. Lirock

    A question about cyclic symmetry modal analysis

    Hi,everyone: I tried to do a cyclic symmetry modal analysis according to help file.But didn't make it.I don't know where is the problem.Here is my steps: 1) BUILD THE FINITE ELEMENT MODEL, INCLUDING BUILDING GEOMETRY,MESHING,ROTATING THE NODE COORDINATE,AND DEFINE MATERIAL PROPERTIES 2)ISSUE...
  15. Lirock

    Superelement can be copied?

    Hi,everyone: In substructure application, how to creat superelements at different positions? Can it be copied like other normal element?
  16. Lirock

    How to operate more than one path at the same time?

    Hi,everyone: In ANSYS,we can just have one path actived.But if I have three paths,which all have an iterm named S1,how can I plot the three 'S1' on one graph? I think command 'GET' maybe do it,but I don;t know how to. Rock Li
  17. Lirock

    Which is the result coordinate system in POST26?

    Hi,everyone: In POST1,we can use command 'RSYS' to modify the result coordinate system,but 'RSYS' is not a known command in POST26. Then which is the result coordinate system in POST26? Rock Li
  18. Lirock

    Foundation load of turbine civil project

    Hi,everyone: I got a question when I calculated the foundation load in a hydralic turbine project.When it comes to the load transported by stayring, should I take the gravity of concrete into account? Thanks! Rock Li
  19. Lirock

    Should the gravity of concrete be included in the foundation load?

    Hi,everyone: I got a question when I calculated the foundation load in a hydralic turbine project.When it comes to the load transported by stayring, should I take the gravity of concrete into account? Thanks! Rock Li
  20. Lirock

    How to get the displacement under a load bigger than critical load

    Hi,everyone: After I do a bulking analysis, I got the critical load. But I wonder how can I get the displacement if I apply a load bigger than the critical value?

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