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  1. Petr Vymlatil

    Plastic Material Bilinear Setup

    Hi Lee.Conti, first you should decide if you need to define your stress-strain curve using engineering or true stress-strain curve. I doubt that you will see drop after yield point in the true stress-strain curve. If you are going to activate large-deflection (large rotation) effects or large...
  2. Petr Vymlatil

    Free ANSYS ACT Apps

    Dear ANSYS users, there are FREE ANSYS ACT Apps developed in company available for download. Figures Manager - app for efficient change of graphical preferences of multiple result Figures located in the Mechanical Outline tree. Advanced export of Figures included. Energy Plot - app for...
  3. Petr Vymlatil

    Ansys APdl solid or shell element smeared Reinforcement?

    The technology for concrete modelling based on SOLID65 is pretty old and not performing very well. You should use newer approach which is based on combination of: - Reinforcing Elements (REINF263, REINF264, REINF265) - material model for concrete TB,CONCR, - and appropriate solid elements, for...
  4. Petr Vymlatil

    Variable dependant load in Ansys

    Hi, you have at least 2 options: 1/ the simplest is way would be an element, for example linear/non-linear spring is capable to introduce a force dependent on deformation. 2/ you can create an loop in APDL which do following: [ol i] calculate first load step *do...
  5. Petr Vymlatil

    Create Joint by Python

    Hi, you can automate the task using ACT (ANSYS customization tookit) for Mechanical. There basically 2 ways: 1/ create python script and use it in ACT console 2/ create ACT extension with GUI (toolbars, custom object etc). It more time expensive but the result is user friendly The answer is...
  6. Petr Vymlatil

    *GET with implied loop

    Hi, I am not sure that your command will work, I have never seen syntax like this in APDL. You do not have to use *do loop, look at *vget command, you can use it like *VGET, ParR, NODE, n,TEMP where ParR is ARRAY (defined via *DIM command) and n entity nuber (usualy n=1) The advantage is...
  7. Petr Vymlatil

    Tensile testing simulation of PTFE (teflon) - material model

    Bonias, I am not sure which model is right for teflon, but if you can neglect strain rate, your choice is OK. Be sure that you are using nlgeom,on (includes large-deflection or large strain effects). I would recommend to load with displacements. ANSYS expect TRUE stress-strain data. As far I...
  8. Petr Vymlatil

    Thermal Contact in APDL

    Hi Benjamin, you are using SOLID5 element with keyopt(1) = 0 so you perform coupled field analysis and UX, UY, UZ, TEMP, VOLT, MAG are your DOFs. Do you want to perform such a coupled analysis? If you are interested in thermal analysis only, change keyopt(1) to 8, in your macro ET,1,SOLID5,8 or...
  9. Petr Vymlatil

    ANSYS

    Basically there are 3 options how you can customize your report: 1/ via preferences in Report Options dialog (link) 2/ or you modify the current report generator (link) - modification of some xml files is necessary 3/ for advanced and user friendly customization you can also use ACT, an example...
  10. Petr Vymlatil

    1D pipe flow to 3D FEM

    Hi, I do not know if there a specialized solution for mapping of FloMASTER or Flownex in to FEM domain. But for example in ANSYS you can map results (temperatures, pressures etc) from other programs using scripting/programming. In ACT (ANSYS Customization Toolkit) you can program such mapping (=...
  11. Petr Vymlatil

    Calculate Contact Area Using APDL in Workbench

    Hi, try to create named selection containing bodies (volumes) on your contact side, you can name it "contact_side". Then in APDL Comamnd Block you can select the elements via cmsel commad. Your code will look like this: SET,LAST !select results from last loadstep ! added code...
  12. Petr Vymlatil

    Fatigue results on Ansys Mechanical

    @TeoAlfa fist I would recommend to follow advice from L_K - use nonlinear frictional contacts and nonlinear material model and check the amount of plasticity Petr Vymlatil (www.designtec.info)
  13. Petr Vymlatil

    Fatigue results on Ansys Mechanical

    @ TheaAlfa No I did not want to say, that your fatigue analysis results are not correct, because the pin is outside the tensile strength limit. You should not use the tensile strength limit as strict criterion. Keep in mind that in reality have the material plastic behavior and the stresses...
  14. Petr Vymlatil

    Fatigue results on Ansys Mechanical

    The explanation why you can obtain positive number of cycles with stress higher than tensile stress might be elastic–plastic correction method (Neuber’s rule). This method is a part of the strain-life approach in ANSYS fatigue tool. You can find more information here on slide 16 here or here...
  15. Petr Vymlatil

    Importing FE Model in ANSYS Workbench

    You can use External Model or Finite Element Modeller component and link it to your analysis, as shown in attached figure. Petr Vymlatil (www.designtec.info)
  16. Petr Vymlatil

    ANSYS Workbench

    Try to search for string "Drucker-Prager Concrete" in ANSYS Help (Mechanical APDL > Material Reference > 4. Nonlinear Material Properties > 4.9. Geomechanics) Petr Vymlatil (www.designtec.info)
  17. Petr Vymlatil

    ANSYS Workbench

    Hi, Cohesive Zone Model is intended for discrete crack modelling. Maybe you should use "smeared" model for concrete named "Drucker-Prager Concrete" (link to ANSYS HTML Help). Regards Petr Vymlatil (www.designtec.info)

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