Rotational Capacity of Aluminum Beams under Moment Gradient. II: Numerical Simulations
This article has been corrected.
VIEW CORRECTIONPublication: Journal of Structural Engineering
Volume 125, Issue 8
Abstract
An investigation into the feasibility of applying the finite-element method as a tool for cross-sectional classification for structural codes is carried out. A numerical model of rotational capacity of aluminum beams is established using the nonlinear implicit code given in the ABAQUS/Standard Theory Manual. The performance of the model is compared with experimental results presented in the companion paper in this issue. A sensitivity study is carried out in order to establish the sensitivity of the predicted results to model parameters that are not well defined at different section slenderness levels. The results obtained compare well with the experiments in that discrepancies between the experimental and numerical models have a limited effect on the results. Furthermore, the results show clearly that the finite-element model can be used to predict the load-deflection behavior under local buckling of compact aluminum beams, provided that the plastic anisotropy and the uniaxial stress-strain behavior of the material is well described. The validated model provides a basis for future parametric studies aimed at an improved understanding of the inelastic behavior of aluminum beams and improved cross-sectional classification in structural design codes.
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Published In
Journal of Structural Engineering
Volume 125 • Issue 8 • August 1999
Pages: 921 - 929
History
Received: Oct 19, 1998
Published online: Aug 1, 1999
Published in print: Aug 1999
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