Question

Why linear and nonlinear buckling analysis results are not same?

Answer 1

Linear-buckling analysis is also called eigenvalue buckling or Euler buckling analysis because it predicts the theoretical buckling strength of an elastic structure. Eigenvalues are values of load at which buckling takes place. Eigenvectors are buckling shapes associated with the corresponding eigenvalues ........

Nonlinear buckling analysis should become routine because buckling is a dangerous mode of ... Linear finite-element analysis does not provide enough information ........