Eigenvalue Buckling Prediction In The Abaqus Standard Users Manual

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Eigenvalue Buckling Prediction In The Abaqus Standard User's Manual 2017

Oct 09, 2008 This RIKS analysis delivers the Load Proportionality Factor (LPF) as a solution. So it is enough to only give a reference load ( lets say Unit Load ) and the LPF at the time of bucking will then be buckling load. For further information, please refer to: Abaqus Analysis Users Manual Section 6.2.3 Eigenvalue buckling prediction. Sep 12, 2017 Different types of buckling-prone structures, exhibit different behaviors in the post-buckling regions. Abaqus offers various types of analyses, focusing on capturing the post buckling behavior, such as the Riks analysis. This type of analysis usually succeeds a linear buckle load analysis and is based on introducing an imperfection to the.

Using discrete/analyically rigid elements with buckling analysis

Eigenvalue Buckling Prediction In The Abaqus Standard User's Manual 2016

Using discrete/analyically rigid elements with buckling analysis

Eigenvalue Buckling Prediction In The Abaqus Standard User's Manual Software

So I'm trying to model a column with 4 rigid links for a buckling analysis. The overall structure is simply supported and there is also a linear spring at the middle joint. Each of the rigid links are connected to the one below via a rotational spring. I attached the model for reference.
However, when I try to run it, this error pops up: DIFFERENTIAL STIFFNESS MATRIX IS COMPLETELY NULL. THE EIGENPROBLEM CANNOT BE SOLVED. IN A *BUCKLE ANALYSIS THE MOST LIKELY CAUSE IS THAT A NONZERO LOADING PATTERN WAS NOT SPECIFIED VIA *BOUNDARY, *CLOAD, *DLOAD, ETC,.
What does this error mean/how can I fix it? Thanks!
BTW, this model is with analytical rigid parts for the links but the same error occurs with the discrete rigid parts too.