Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Nonlinear Analyses Of Steel Plates Submitted To Axial Compression Forces Considering Residual Stresses
Submission Author:
Elvys Reis , MG
Co-Authors:
Elvys Reis, Caroline Martins Calisto, Ana Lydia Castro e Silva, hermes carvalho
Presenter: Caroline Martins Calisto
doi://10.26678/ABCM.COBEM2019.COB2019-0978
Abstract
This study evaluates the steel plates' behavior exclusively subjected to axial compressive forces due to static actions considering initial imperfection and residual stresses. Linear analyses of plate stability were performed with variations in the boundary conditions to obtain the values of the critical buckling load and the main buckling modes. For this, numerical models were developed in the Abaqus, commercial software for analyses, and it made it possible to study the variation in the value of the elastic buckling coefficient as a function of the ratio between the lengths of the plate sides through the critical buckling load. Considering the initial imperfection and distribution of residual stresses of plates cut with a blowtorch in both longitudinal edges, the principal approach of this work is the plate behavior subject to nonlinear analysis. The results of the elastic buckling coefficient obtained in the numerical analyses converged to the values found in the literature, which validates the use of the proposed models. The values of the ultimate buckling load of plates cut with blowtorch obtained through nonlinear analyses were lower than those obtained by the buckling analyses, which shows the influence of the initial imperfection and the residual stresses.
Keywords
Compressed steel plates, Residual stresses, Numerical Modeling, nonlinear analyses
