3.3.1. BuckEigSolver

The BuckEigSolver performs a buckling eigenvalue analysis. It solves for the prebuckling static state, assembles the updated stiffness, and computes buckling eigenvalues/eigenvectors.

3.3.1.1. Overview

Solver type: BuckEigSolver

  • Prebuckling: solves K0 a = f_ext for the static state

  • Buckling: computes eigenpairs from the generalized problem using the initial and updated stiffness

  • Outputs: eigenvals (critical loads) and eigenvecs (buckling modes)

3.3.1.2. Parameters

3.3.1.2.1. Mandatory Parameters

Parameter

Description

type

Must be set to "BuckEigSolver"

3.3.1.2.2. Optional Parameters

Parameter

Description

tol

Convergence tolerance (default: 1.0e-3)

iterMax

Maximum iterations (if applicable)

3.3.1.3. Examples

  • Buckling studies on frames or plates with appropriate boundary conditions

3.3.1.4. See Also