Tetmajer-Jasinski buckling

paula94
paula94 New Altair Community Member
edited October 2020 in Community Q&A

Hello,

 

I have a question concerning buckling analysis. If I use linear static load step and then linear buckling will optistruct calculate the buckling correctly if the buckling occurs according to Tetmajer-Jasinski and not according to Eulers? (the slenderness is higher than 40 but smaller than 100). 

 

I have performed the analysis and the results are wrong as if it was calculated according to Eulers. What should I do to obtain realisic results? I tried to add extra material parameters and do nonlinenar quasi static but its still not working.

 

Thank you for your help in advance.

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited January 2020

    You could try Nonlinear Transient Analysis.

     

    Time Stepping schemes:

    Generalized Alpha Method (Default)

    • Used for most nonlinear transient simulations
    • “Light” numerical damping

    Backward Euler Method

    • Useful for “quasi-static” post-buckling solutions
    • “Heavy” numerical damping
    • Dissipative and thus, highly stable

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