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Pranav Hari

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Everything posted by Pranav Hari

  1. Hi vishruthdilip Can you please share us the Radioss starter and include file. You can use the secure link if needed. https://ftin.india.altair.com:8443/filedrop/~Ma3TaE
  2. Hi rabi Try adjusting the tolerance in the equivalence panel. Please note that adjusting tolerance should not affect the remaining mesh at any points Or try 2D> replace and replace the nodes manually to give connectivity
  3. Hi vishruthdilip Yes it is the easiest way
  4. Hi vishruthdilip .K file and .bdf files are input files of other solvers. Similarly, you have .rad file for Radioss which is a ASCII file. You can as well edit this file in the text pad or so and make changes accordingly. In your case, if you need to edit some material data, you should first have a reference .rad file (0000.rad) which is a starter out file. You can make changes to this starter out file. Also have a look at the radioss files from the e-book https://altairuniversity.com/free-ebooks-2/free-ebook-crash-analysis-with-radioss-a-study-guide/ (page 35, Radioss files)
  5. Hi vishruthdilip Try this Also, have a look at the solver interface documents from help
  6. Hi vishruthdilip Have a look at the online help documentation.
  7. Hi Omer Faruk GUMUS Normally it is recommended to set the number of SPMD domains (np) equal to the number of sockets and to set the number of SMP threads (nt) equal to the number of cores per socket. With a low number of cores (below 32), a pure SPMD run might be more effective but the performance gap should be small. With a very high number of cores (1024), it is possible to increase the number of SMP threads up to the number of cores per node and set only one SPMD domain per node to maximize performance if the limit of scalability of the interconnect network is reached Check this document and also refer to the Radioss parallelism topic (page 47) discussed in the e-book https://altairuniversity.com/free-ebooks-2/free-ebook-crash-analysis-with-radioss-a-study-guide/ Radioss_parellelism.docx
  8. Hi JIAYU SUN This is because the GeForce series of Nvidia is not officially recommended by HyperWorks. However, this warninig message only appear once. You can proceed further and you may experience some graphical issues in the future. HyperWorks_2017_Hardware_Recommendations_and_Certifications.pdf
  9. Hi Rahul Prakash Download the e-book practical aspect of finite element simulation which discusses different methods of meshing. You can as well get documentation/ tutorials/ model files for meshing. https://altairuniversity.com/free-ebooks-2/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/
  10. Hi robert1024 These forum posts may also help you.
  11. Hi Callum2310 If possible please post your solution here, so that it may be useful to other forum users who have the same query.
  12. Hi MEIYARASU19 There are many online learning sources available for learning tcl/tk scripting. As you get familiar with the language you can review and practice the online tutorials available in our Help Menu.
  13. Hi Krzysiek Can you please explain more. Are you able to invoke the solver and complete the job?
  14. Hi Nitin Jain The recommended element types in Radioss for spot weld creation are shell element. Surface 1 and 2 for each solid spotweld should always connect with a shell element. If one surface of one solid spotweld is not connected with a shell element, then the stiffness will not be computed correctly and an error may occur Since you are having solid elements you have to create a shell coat and then connect using spots. There are three different ways of modeling spotweld: • Node Connect • Spring (/PROP/TYPE13) Connect • Solid Connect When you create a spot weld using type 2 spring, by default you will get the (TYPE13 spring property + TYPE2 contact). In your case since you have to define max tensile strength of spot weld as 40% of the base material, then I recommend you use the solid connect method. Here you can specify separate failure criteria. This is explained in detail in the Radioss help documentation. Please have a look Also, have a look at the Radioss example on solid spot weld creation. I have shared the 2 example deck files, which is modeled using default spring contact and also solid connect. Check that too. solid connect.zip spring_beam_spotweld.zip
  15. Hi Can you please share your model. You can use the secure drop box link https://ftin.india.altair.com:8443/filedrop/~Ma3TaE 
  16. Hi Germanstudent Delete the settings file and try again. Restart HyperMesh and see if you get the crash.
  17. Hi Sumit Patil This video on Element quality checks may also help you. https://altairuniversity.com/learning-library/hypermesh-element-quality-check-and-mesh-styles/ Also, download the e-book "Practical aspects of finite element simulation" in which mesh quality checks are explained in detail. https://altairuniversity.com/free-ebooks-2/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/
  18. Hi karth If it is labeled as 123.., then it would be a constraint rather than a load. 123 represents the degrees of freedom. This would be some conversion error. You can add loads to the required nodes after deleting those constraints.
  19. Hi karth Did you try this? Go to Analysis panel > loads. Tick on label loads which will display the magnitude. Use the "uniform size" panel to adjust the size of the load vector.
  20. Hi karth In HyperView use the vector option, where you can view the magnitude and direction of displacement for selected nodes.
  21. Hi robert10241 I think you need to assign dedicated failure property to achieve this simulation. Please go through Failure Models in RADIOSS Help Menu, which explains about various failure models available. Please go through Example 26-Ruptured Plate example from Help Menu, which is a simulation of the rupture using the failure models. The example model file is attached for your reference. FAILURE_JOHNSON_0000.rad.zip FAILURE_JOHNSON_0001.rad.zip
  22. Hi Begoña I do not see an input to enter the thermal exponent in MAT law 73. According to the material data you provided, I think its more suitable to use Mat law 2. Mat Law 2 - This law represents an isotropic elastoplastic material using the Johnson-Cook material model. This model expresses material stress as a function of strain, strain rate, and temperature. A built-in failure criterion based on the maximum plastic strain is available You can input the youngs modulus, initial density, thermal exponent, yield stress, plastic strain etc (according to your data) in Mat law 2 Note: use IFLAG=1, if you do not know the Hardening parameter(b) and exponent(n).
  23. Hi Chandan Nagaraja Can you reinstall the student edition, from the link provided in the mail send to you and try again? If the problem still exists, share the screenshot or an image of your issue.
  24. Hi Curro Capi de Camas As you mentioned, since you need to check the mesh quality for different quality criterion, then the CheckQualityOfElements.tcl can help you. Instead of setting the quality criterion manually in HM, you can set it in the script (edit the script with your quality parameters) and the script automatically stores the failed elements in sets.
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