APPLICATION OF THE HYBRID SIMULATION APPROACH ON MULTI-SCALE STRUCTURAL ANALYSIS FRAMES
DOI:
https://doi.org/10.18867/ris.114.691Keywords:
hybrid simulation, non-linear analysis, multi-scale problems, steel framesAbstract
This paper presents a general two-scale procedure for the non-linear analysis of structures, taking advantage of hybrid simulation concepts. This proposal considers the coupling and transition between elements of different scales, reducing the degrees of freedom in global analysis by reproducing complex phenomena in local scale models. To manage the interaction of the local models, the hybrid simulation platform, OpenFresco, is proposed for distributing computational work and allowing the interaction between experimental setups and numerical analysis models using different software. The methodology is illustrated through the solution of a linear-elastic system subjected to gravitational and seismic loads, comparing the behavior and analysis time of simplified models, finite element models, and those of the proposed procedure. Finally, to further assess and validate the methodology, the paper presents the pushover analysis of a steel frame, obtaining its capacity curve and showing the tendency of the two-scale method to approximate the results of a refined non-linear finite element model but with a higher computational efficiency.
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