engleski

Computational non-linear analysis of structural stability

The paper presents the non-linear stability analysis using finite element method and updated Lagrangian incremental formulation. In the case of thin-walled beam finite element with doubly symmetric open cross-section the tangent stiffness matrix is obtained including the second-order terms of finite rotations. Material is assumed to be linear elastic. Obtained numerical results are compared with those from the linear stability analysis.

structural stability; non-linear analysis; finite rotations; thin-walled beams; finite element method

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