Computational modeling applied to the elastic buckling of columns

Authors

  • Renata Costa de Almeida Alonso Universidade Federal do Rio Grande
  • Diego Souza de Lima Universidade Federal do Rio Grande
  • Matheus Gomes Universidade Federal do Rio Grande
  • Mauro de Vasconcellos Real Universidade Federal do Rio Grande
  • Elizaldo Domingues dos Santos Universidade Federal do Rio Grande
  • Liércio André Isoldi Universidade Federal do Rio Grande

DOI:

https://doi.org/10.14808/sci.plena.2015.081310

Keywords:

Buckling, Critical Load, Numerical Simulation

Abstract

Buckling is an instability phenomenon which occurs in slender structural members subjected to compressive load. The elastic buckling is characterized by a suddenly lateral deflection of the slender structural member, when the critical load is reached. In columns the elastic buckling is considered the collapse of the structure. The goal of this work is to present three different computational models to analyze the elastic buckling of columns. The software ANSYS, which is based on the Finite Element Method (FEM), was adopted to develop these models, employing the elements BEAM189, SHELL93 and SOLID45. The boundary conditions and compressive load must be applied in a specific way for each model, depending of the finite element characteristics. Different boundary conditions were considered for each numerical model. In the verification of these models, the analytical solutions for these boundary conditions were used. All the numerical results obtained are in agreement with the analytical ones, being the higher difference encountered of 2.83 %. Besides, the columns buckled shapes numerically obtained are also in agreement with the theoretical configurations. The advantage of the use of computational models developed with SHELL93 and SOLID45 finite elements is the possibility of analyzing columns with holes or with complex geometries.

Author Biographies

Renata Costa de Almeida Alonso, Universidade Federal do Rio Grande

Formação em Matemática Licenciatura Plena e Mestranda do Programa de Pós-Graduação em Modelagem Computacional da Universidade Federal do Rio Grande

lattes:  http://lattes.cnpq.br/6628723552368801

Diego Souza de Lima, Universidade Federal do Rio Grande

Escola de Engenharia (Furg), Engenharia Mecânica

Matheus Gomes, Universidade Federal do Rio Grande

Escola de Engenharia (Furg), Engenharia Mecânica

Mauro de Vasconcellos Real, Universidade Federal do Rio Grande

Escola de Engenharia (Furg)- Engenharia Civil

lattes:  http://lattes.cnpq.br/1131858526704034

Elizaldo Domingues dos Santos, Universidade Federal do Rio Grande

Escola de Engenharia (Furg) - Engenharia Mecânica

lattes:  http://lattes.cnpq.br/6854950768271660

Liércio André Isoldi, Universidade Federal do Rio Grande

Escola de Engenharia (Furg) - Engenharia Mecânica

lattes: http://lattes.cnpq.br/3761060945802171

Published

2015-08-31

How to Cite

Alonso, R. C. de A., Lima, D. S. de, Gomes, M., Real, M. de V., Santos, E. D. dos, & Isoldi, L. A. (2015). Computational modeling applied to the elastic buckling of columns. Scientia Plena, 11(8). https://doi.org/10.14808/sci.plena.2015.081310

Issue

Section

VI Conferência Sul em Modelagem Computacional

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