Radioss Model Error

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited April 2018

    Hi,

    The error is causing because of the curve behavior you have defined (yield stress strain curve). If you review the curve you can see that 4th absicca is less than the 3rd one and similarly check for other values also. This is not an intended behavior for stress-strain curve, so correct these values in the function.

    curve.PNG

     

    You can only create a good simulation with correct and authentic material values. Any illogical or unclear material data will result in wrong results and weird behavior.

    We have a honeycomb crashbox tutorial available at https://altairuniversity.com/learning-library/modeling-and-analysis-of-honeycomb-impact-attenuator/ , I recommend you to got through this especially the material data.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2020

    Hello George,

    thanks for your advise and correction. I have corrected it. I was following the tutorial which you also mentioned . Although during the run, it shows no error however in results there is no movement of the top surface plate. Could you please tell me , what mistake I have done?

     

    Thanks in advance.

     

    With Regards

    Abhinav

    Unable to find an attachment - read this blog

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited May 2018

    Apart from that I wish to know what could be posssible failure shear strain values, that could be given in MAT 28 law. 

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