Nonliner Spring (Type4)

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

Hi, 

 

I don't understand how I can do a non-linear spring. I want to have a constant spring constant up to a certain strain and from there to have another spring constant. How is that accomplishable?

I've seen the options and think I need to put the H-value to 1. But I don't really understand how that formula works. 

 

Best, Jonas

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi Jonas,

    I'm attaching the RADIOSS element library theory manual. All the formulations used are shown here. 

    I recommend you to go through the same. Also, please go through Type 13 spring, which  accounts for non-linear stiffness.

     

    Unable to find an attachment - read this blog

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Figured it out: In parameter fund_ID1 in the spring (type 4) property settings you can assign a curve. 

     

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