What have I done wrong with shuffle optimization, why the core ply change the position, actually it should not be stacked?

Paphatsorn
Paphatsorn Altair Community Member
edited May 2022 in Community Q&A

I am doing a shuffle optimization with monocoque structure with composite material, and the result of it did not correct. The core ply (Rohacell) should stay still. I do not know which steps did I miss? 

As you can see the core ply which has orientation on 60 degree need to stay still as iteration 0 but the other plies should stack until the optimizer find and compute the optimal layout for this structure.

image

The result that I need to get will be like following picture.

image

I will attach the model file of my shuffle optimization, so you can check it out.

Thank you in advance. Please help me I am struggled with this for 3 days.

Welcome!

It looks like you're new here. Sign in or register to get started.

Best Answer

  • PaulAltair
    PaulAltair
    Altair Employee
    edited May 2022 Answer ✓

    I don't see your model attached, but did you define your CORE as such? for this to work as expected, you need to have a symmetric matrix too

     

Answers

  • PaulAltair
    PaulAltair
    Altair Employee
    edited May 2022 Answer ✓

    I don't see your model attached, but did you define your CORE as such? for this to work as expected, you need to have a symmetric matrix too

     

  • Paphatsorn
    Paphatsorn Altair Community Member
    edited March 2022

    I don't see your model attached, but did you define your CORE as such? for this to work as expected, you need to have a symmetric matrix too

     

    Sorry for that, this is my model file. 

  • PaulAltair
    PaulAltair
    Altair Employee
    edited March 2022

    You had specified only a single CREP repetition of a single ply as 'CORE'  this was satisfied by only having PLY 44, in attached I set CREP repetition instead to 9 which returns:

    image

  • Paphatsorn
    Paphatsorn Altair Community Member
    edited March 2022

    You had specified only a single CREP repetition of a single ply as 'CORE'  this was satisfied by only having PLY 44, in attached I set CREP repetition instead to 9 which returns:

    image

    Thank you so much, sir.

     

Welcome!

It looks like you're new here. Sign in or register to get started.

Welcome!

It looks like you're new here. Sign in or register to get started.