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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 
    • Rahul Ponginan

      ユーザーフォーラムについて   10/22/17

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Popular Content

Showing most liked content since 12/07/17 in all areas

  1. 1 like
    Hello, I downloaded your model and opened in HM2017. For me aspect ratio by F10 panel is 4.2 same as by quality index. Thankyou
  2. 1 like
    Hi with solid elems, stress tensor is output in material coordinate system (CORDM in PSOLID card) But I think you don't need to assign it. in hyperview, just select the cylindrical system at "Resolved in:" when plotting stress if you assigned it to COORDM, let "Resolved in" as "analysis system"
  3. 1 like
    Hi Andres, This seems to be an issue with the local system defined. Go to card edit option and select 'systs' and select the local system referenced for the /INIVEL/AXIS and click on edit. In the card edit panel select the type as Frame, and run the analysis.
  4. 1 like
    I guess you could use the following…
  5. 1 like
    No, issue i have got the solution, thank you.
  6. 1 like
    Hi Ramakiran, I have corrected the model and it runs fine. The model has been sent to you via mail. Changes made in the model: As you can see there is high hourglass energy in your model. In order to fix this create an output block for all the parts and in HyperGraph plot hourglass energy for each component and thereby we can understand which component is responsible for this higher hourglass energy. In this model it was a solid component and I made the Isolid formulation to 24. Another issue was the high energy error in the model. This is caused by having the master node of an RBODY attached to an element. RADIOSS by default moves the master node of the RBODY to the center of gravity of the RBODY. If the master node is attached to an element then this causes element deformation and adds non-physical energy to the simulation which causes the energy error. The solution is to run HyperCrash model checker and accept the automatic fix which will create a new master node not attached to an element and make the old master node a slave. Or the model checker in HyperMesh can find all the rbodys with this issue but cannot auto fix like HyperCrash. Instead once you isolate all the RBODY in HyperMesh you can card edit all of these /RBODY at once then then pick config=rigidlink, type=RBODY and set Icog=3 which will tell RADIOSS not to move the master node. Some changes were made in the interface defined.
  7. 1 like
    It's a workaround if you press T and select an orthogonal plane , set it as true view and split element by drawing line horizontal (it's tough to draw it correctly!)
  8. 1 like
    Hi thank you my error is resolved yours sincerely kartik
  9. 1 like
    Hi, It would be much easier if you use the script that comes with HyperWorks to launch RADIOSS. Please try this the script then you don't need to do anything about the Intel MPI path as the script sets that for you. /altair/hw/2017/altair/scripts/radioss -v 2017.2.1 modelinput_0000.rad -mpi i -np 48 -nt 1 -hostfile hostfile -mpiargs -genv KMP_AFFINITY=scatter -genv I_MPI_PIN_DOMAIN=auto -genv I_MPI_ADJUST_BCAST=1 -genv I_MPI_ADJUST_REDUCE=2 -genv I_MPI_MPIRUN_CLEANUP=1 -genv KMP_STACKSIZE=400m -genv I_MPI_FABRICS=shm:dapl with a hostfile that contains, more hostfile node1:16 node2:16 Please send the output for this command. A few more things, Can you ssh between the nodes without entering a password? Last, the HyperWorks installation should be accessible to all nodes in the same location by installing on a shared drive or locally in the same place on each node.
  10. 1 like
    Hello, To split a element you can find the available options in 2D page or 3D page, under "edit element" panel and "split" panel. In the edit element panel you select the split option, select the element and then draw a split line. While in the split panel you select the element and provide two nodes along which you wan to split the element. Hope this helps. Thank you
  11. 1 like
    Hi @mahdi72, You can use the MoM solver in FEKO (possibly with double precisions/ low frequency stabilisation) to simulate the spectrum of the lightning pulse that you are interested in (typically in the range of about 1kHz-10MHz). Then in POSTFEKO you can use the time analysis functionality to definite the lightning pulse and determine the pulsed voltage & current responses on the cables. There is an excellent webinar on time analysis available in our resource library: FEKO Webinar Recording: Time Domain Responses from Frequency Domain Results
  12. 1 like
    Hello, Search for your expression in the browser, e.g. Results->Scalar->YourExpression (if Scalar), right click and pick "Edit". Best Regards, Mario
  13. 1 like
    Hi @mahdi72, Lightning analysis and cable modelling are both quite complex fields of study. This means there is no quick answer to your question, although you might want to start with: "Lightning" related topics: http://www.altairhyperworks.com/ResourceLibrary.aspx?keywords=lightning&altair_products=FEKO "Cable Harness EMC/EMI: Cross Talk, Radiation, Interference & Susceptibility": http://www.altairhyperworks.com/ResourceLibrary.aspx?keywords=Cable+Harness+EMC%2fEMI%3a+Cross+Talk%2c+Radiation%2c+Interference+%26+Susceptibility&altair_products=FEKO
  14. 1 like
    Hi, I'm attaching a webinar here on RBE's in RADIOSS where the use of rbe's are explained with examples. The load transfer in rbe's are shown in this video. PS: The video is in .swf format, which plays in GOM player. Radioss_RBEs_MPCs_engl_May13.swf
  15. 1 like
    Hi @leighbo009 Please refer to this video on creating and assigning local coordinate for material orientation https://altairuniversity.com/analysis/structural/composites/modeling-and-analysis-of-composite-structure/
  16. 1 like
    New Feature in HW 2017 – Collision Detection Tool (Click Here) A new feature called ‘Collision Detection ‘is introduced from HyperMesh 2017, which will check components or groups for element penetrations and intersections and we can fix those manually or automatically. Please note that the Collision Detection tool is only available in the RADIOSS and LS-DYNA user profiles. Penetration is defined as the overlap of the material thickness of shell elements, while Intersection is defined as elements that actually pass completely through one another: Any penetrations or intersections in the model can lead to weird model behavior and may also result in run termination. So, it is important and always recommended to fix the penetrations or intersections in the model.
  17. 1 like
    Hi I think nonlinear buckling is nonlinear geometry loadstep. To find buckling load, increase it step by step, and observe bending stress value which starts to increase once structure reachs critical
  18. 1 like
    Hi Ashu, Further to MATX02, please find attached spread sheet which helps you to get the 'B' and 'n' parameters. I hope this helps. Thanks, Vikas Mat_johnson_Cook_2013.xlsx
  19. 1 like
    Dear Jan, I have a question about HyperWorks. When defining the material orientation for composite rim design I tried to let it follow the outer part of the rim, but it isn't working. Do you know if it is possible and what the command is to do this? Another question we have is whether it is possible to use some kind of circular pattern command to use on plies and how it works. Thanks in advance! Kind regards, Pieter Dear Pieter, to define the material orientation along a rim or a certain shape, I would recommend to use the tool within the Aerospace toolbar to define orientation along lines or node paths. Here is a short video that describes how to access the function: http://screencast.com/t/oLcdJC8jH For circular patterns, please define a user defined coordinate system type "cylindrical". you can then use this system to define a circular pattern along the circular system axis. Here is another flash video that describes the procedure.http://screencast.com/t/UaoJGtQX Jan
  20. 1 like
    It is a very easy to learn language Read it manual and take some examples, you will see https://www.tcl.tk/man/
  21. 1 like
    Hi, HWAT has many base functions and also ultility functions that useful for you. read the help in ..\help\altair_tools\tools.html i think it is easy. so if you feel tough at any point please post here, i cannot describe all because it is a huge library