I am trying to run a material non-linear analysis on my sample, but I keep getting *** ERROR # 4966 *** Minimum time increment reached, analysis aborted.

BryanN_22537
BryanN_22537 Altair Community Member
edited November 2023 in Community Q&A

Hello! For context, I am making a simulation of a 3-D tensile sample. The sample is compromised of a PETG base with carbon fiber filaments implemented inside the base. I am trying to run a material non-linear analysis and I keep recieving *** ERROR # 4966 *** Minimum time increment reached, analysis aborted.

I have an idea that it might have to do with the auto contact setting I implemented or how the sets I created for the pulling load and boundary condition were made but I could be wrong. Please let me know if I need to clarify any information. 

Attached is my hm file. 

Tagged:

Best Answer

  • GTT Johan
    GTT Johan
    Altair Employee
    edited November 2023 Answer ✓

    Hi
    I did add a RBE2 to the left side holding the specimen and then added a rbe3 for loading on the right side!
    Updated the BC and force set to just include 1 single node each
    Model runs fine now.

    image


    /johan

Answers

  • GTT Johan
    GTT Johan
    Altair Employee
    edited November 2023

    Hi
    regarding the loads, is supposed to have FORCES on all nodes in you force set?
    image

     

    A good start would be to apply displacement control on the "right side" instead of forces.

    Regarding time step min you can control this with the nladapt card

    $HMNAME LOADSTEPINPUT        3"nladapt"
    NLADAPT        3DTMAX        0.1DTMIN     0.0001

    Kind regards
    /Johan

  • GTT Johan
    GTT Johan
    Altair Employee
    edited November 2023 Answer ✓

    Hi
    I did add a RBE2 to the left side holding the specimen and then added a rbe3 for loading on the right side!
    Updated the BC and force set to just include 1 single node each
    Model runs fine now.

    image


    /johan

  • BryanN_22537
    BryanN_22537 Altair Community Member
    edited November 2023
    Johan Dahlberg_20306 said:

    Hi
    I did add a RBE2 to the left side holding the specimen and then added a rbe3 for loading on the right side!
    Updated the BC and force set to just include 1 single node each
    Model runs fine now.

    image


    /johan

    Hello!

    Thank you so much! I'm very new to Hyperworks so I am trying my best to learn as much as I can. The reason why I wanted to make a set is because it was my understanding that doing so for a force for example would mean that the end would have a uniform pulling load. But it turns out I had a multiple amount of loads. 

     

    I've never had to use the rigid body command but looking into it, it just seems like a better way to run the simulation. I should have looked into this before.

     

    Again, thank you for your help!

Categories