Pretension manager

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

Hi all,

 

I am exploring the Optistruct pretension manager capabilities instead of preloading the bolts in a 'manual' way.

Do you know if Optistruct iterates to find the right preload values starting from my input? 

 

Example: I need to apply a bolt preload of 20000N. Once applied, I calculate the sum of the gpforces on a section of the bolt and I find the total force to be 18000N. So I have to increase the input preload to 22000N to obtain an actual preload of 20000N. This is because of the elasticity of the components connected. Does Optistruct iterate starting from the input value to find the right preload value?

 

As an additional question, is there a faster way in Hyperview to measure the gpforces on the section of the bolt? It is time-consuming exporting the value to excel to sum them all.

 

Thank and Regards

 

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2018

    Hi,

     

    I will check and update you soon. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2018

    Thank you Prakash, I will update you if I find a smarter way to calculate the preload.

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2018

    Hi @dracu777

     

    I wrote to experts and they requested more details:

    please share a slide about how the user applied the bolt pretension force and how she/he calculated the sum of the gpforces on a section of the bolt? If a demonstrative model can be shared, it would also be helpful to understand it better.

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