Buckling Analysis for Members with Variable Rigidity by Using the Finite Element Method

Author(s): M. Vrabie • Mihaela Ibănescu • Şt. H. Jerca
Tomme: LVI (LX) | Fascicle: 2 | 2010
Pages: 37-50
Abstract text:
The stability analysis for compressed bars with variable rigidity is studied, by using the finite element method (FEM) in Galerkin’s variant. The general shape of elastic and geometrical stiffness matrices are obtained for stepped and tapered bars. In a study case, the critical buckling load obtained by using FEM, for three columns with constant and variable sectional stiffness (in steps and continuous variation), is evaluated in comparison with others analytical and numerical methods.
Key Words:
stability analysis; critical buckling load; variable rigidity; analytical and numerical methods; finite element.

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Author(s) Information

M. Vrabie
Affiliation: „Gheorghe Asachi” Technical University, Jassy, Department of Structural Mechanics.
Email: vrabie@ce.tuiasi.ro
Mihaela Ibănescu
Affiliation: „Gheorghe Asachi” Technical University, Jassy, Department of Structural Mechanics.
Email: ibam@ce.tuiasi.ro
Şt. H. Jerca
Affiliation: „Gheorghe Asachi” Technical University, Jassy, Department of Structural Mechanics.
Email: -

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