optimize a single point constraint to withstand forces

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

Hi,

 

I am a new HyperWorks user and I’m trying to setup an topology optimization.

 

As optimization constraint, I want to declare a maximum force on my SPC’s, but I don’t know how.

 

The SPC’s I’m using are respectively bolted holes. I have defined them with RBE2 Elements with a calculated node in the middle of the hole.

In the post-processor I already can see the forces on these SPC’s.

Is it possible to define these forces with a maximum value in the pre-processor? How can I optimize these SPC's forces to an maximum value of force they can withstand?

 

Thank your beforehand for your answer.

Tagged:

Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited August 2014

    mitch297,

     

    You must first create the necessary response, in this case it is the Single Point Force at a constrained grid point

     

    This response can be defined using the DRESP1 bulk data entry (with RTYPE=SPCFORCE).  

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2014

    Hi Mitch,

     

    A work around in 12.0 could be that you could attach a spring element between the structure and the spc location and create a static force response for the spring force. 

     

    I hope this helps.  image/emoticons/default_smile.png' alt=':)' srcset='/emoticons/smile@2x.png 2x' width='20' height='20'> 

Categories