Issues faced while post processing of cad model for validation of a frontal pole impact simulation using Radioss 2021

Nihad Ahmed
Nihad Ahmed Altair Community Member
edited April 5 in Community Q&A

I am a student working on my mini project involving the validation of a frontal pole impact simulation using Radioss 2021. However, I have encountered some challenges during the process. Specifically, I am facing issues with obtaining the post processed results to visualize the data for the impact of car model.

To provide you with a clearer understanding of the problems I am facing, I have shared snaps demonstrating the errors.

Additionally, I wanted to share the link to the simulation tutorial that I am following from Altair community.

https://community.altair.com/community/en/yaris-impact-on-pole-at-40km-h?id=kb_article&sys_id=123e55c91b261914507ca6442a4bcbcf

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Answers

  • Polyvios Romanidis
    Polyvios Romanidis New Altair Community Member
    edited February 13

    Hello Nihad,

    1. Based on the community simulation tutorial, you have to insert the whole solver interface and not just the POLE.inc file. So, you have to follow the path: File\Import\Solver Deck and select the IMPACT_YARIS_POLE_40kmh_0000.rad file (The include files will be loaded too).

    For the importing parameters I can suggest some changes:

    • General:
      • Create Parts should be checked
    • Include files:
      • Import file as an include should be unchecked
    • Radioss:
      • Organize orphan entities should be unchecked
      • Read optimization file should be unchecked

    It is important to have Create FE geometry checked in order to create the surfaces and solids of the parts automatically.

    Then, if you open the Include Browser you will see the same tree as the tutorial.  It is a good idea to isolate the POLE part, in order to see the exact same things presented in the tutorial and also interact with the POLE more accurately.

    1. I am not sure why the mesh is not the same as the one in the tutorial. It would be helpful to provide more info about that.  Based on the video you have selected the proper parameters.  Additionally, you can use shaded elements with mesh lines so you can compare the models more easily.

    You can refer to the following KB articles for extra information on how to use include files:

     

     

  • Nihad Ahmed
    Nihad Ahmed Altair Community Member
    edited March 2

    Thanks ,also I'm not able to get the model into the simulation post processing hyperworks software , any idea why? I've attached a picture of the same .

  • Polyvios Romanidis
    Polyvios Romanidis New Altair Community Member
    edited March 5
    Nihad Ahmed said:

    Thanks ,also I'm not able to get the model into the simulation post processing hyperworks software , any idea why? I've attached a picture of the same .

    Hi Nihad,

    I guess that you just tried to open the POST.mvw file. Right?  This file is ready for the post-processing, but first you have to run the simulation (results are not loaded to it, only the morphing).

    To do that you should first run the simulation properly.  If the simulation run .h3d and T01 files have been created based on engine file outputs.

    Even if the simulation run properly, you might get these messages because the files are not in the correct directory.  So in your case, these files should exist in C:/Users/nihad/OneDrive/Desktop/.

    They also must have the exact described name as shown in the message log.  So their names must be:

    • IMPACT_YARIS_POLE_40kmh.h3d
    • IMPACT_YARIS_POLE_40kmhT01

    These names are the default output for this simulation.

    If all of the above are done properly and you still can not see the results, you can load these files directly to your session.  The fastest way to do that is by drag and drop the .h3d file to HyperView window and the T01 file to HyperGraph window.

    Polyvios

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