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Buckling Linear
You can create and solve linear buckling problems in structural analysis.

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  - Buckling Linear
    You can create and solve linear buckling problems in structural analysis.
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Buckling Linear

You can create and solve linear buckling problems in structural analysis.

To solve linear buckling, first apply a reference level of loading, $f_{r e f}$ , to the structure.

Then, perform linear static analysis to obtain the stresses needed to form the geometric stiffness matrix, $K$ , corresponding to $f_{r e f}$ . Calculate buckling loads by solving an eigenvalue problem. Not all eigenvalues are required; only a small number of the lowest eigenvalues are normally calculated for buckling analysis.

The lowest eigenvalue

λ_{c r i t}

is associated with buckling. The critical, or buckling, load is calculated as:

f_{c r i t} = λ_{c r i t} f_{r e f}

Note: Linear buckling is recommended for slender structures. For all other assemblies, perform non-linear buckling via geometric non-linear incremental analysis.