Lattice type is not set properly

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

hello everyone.I am trying to do lattice optimization of a component in order to reduce its weight with the parameters selected - as in picture below:( Also had tried with lot of different target lengths and min/max dia for the lattice).

image.png.bf55b3e3acbed83460f856f3b45ce4a8.png

but most of the time I get a warning messageimage.png.4f511c1a696a81a6958057b0732fe4ec.png - (design violation) from analysis run. Upon checking the inspirerunhistory > optimization > (the relevent file) > progress (text document)

i found text written that Realizing model #--------Lattice type is not set properly-- as in picture below:

<?xml version="1.0" encoding="UTF-8"?>image.thumb.png.b9c269ec80719c412a0fe3df9ad0d926.png

can someone please help me understand the issue and it's possible solution.

Regards

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Answers

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

    Hi Lala,

     

    Have you tried to turn type of the optimization to 'max. stiffness'?

    It seems to me, your min. safety factor isn't achievable with your BCs and loads.

     

    Regards,

    Felix

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

    Thanks Felix Radisch for the response. 

    I have not tried optimization to 'max. stiffness' , in fact my goal is to minimise the mass of component by integrating lattice in it so i am choosing objective as minimize mass. 

    And as for the  min. safety factor I set it to 1.2  and by changing lattice length and min/max dia I am getting  min. safety factor  from 1 to 1.4 (shown in picture below).  Also I would like to highlight the fact that the min safety factor is occuring on edge of hole that can be improved by fillet or removing lattice from it and all other critical areas have high safety factor.(Also shown in picture). 

    What do you suggest now??.

    image.png.5977aab32ec96c5b137a7229104884c3.pngimage.png.91bdf9b617b25556d25a244aa937b273.pngimage.png.e69fd9604dc63f065968b3ee02e6efd5.png

    <?xml version="1.0" encoding="UTF-8"?>image.png

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

     

    Felix Radisch I have sent you some more information regarding the issue. check your inbox.

    Regards. Have a good day.
     

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

    HELLO ADMIN. I AM WAITING FOR RESPONSE FROM 8 TO 10 DAYS.

     CAN YOU PLEASE REPLY TO THE ISSUE ADDRESSED HEAR AND ON YOUR PRIVATE MESSAGE.

     

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

    Dear Lala,

    Please be aware this is a user support forum where noone has to answer your questions. Additionally, please immediately stick to the common rules of communication.

     

    Kind Regards,

    Felix Radisch

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