Non-linear finite element optimization for inelastic buckling modelling of smooth rebars
Non-linear finite element optimization for inelastic buckling modelling of smooth rebars
复制标题
光滑钢筋非弹性屈曲建模的非线性有限元优化
DOI:
10.1016/j.engstruct.2021.112378
复制
发表时间:
2021
影响因子:
5.5
通讯作者:
Di Sarno L
中科院分区:
文献类型:
--
作者:
Di Sarno L
This paper presents an optimization methodology to simulate the monotonic and cyclic response of steel reinforcement smooth bars when subjected to inelastic buckling. A finite element (FE) model of steel rebars, based on non-linear fibre sections and an initial geometrical imperfection, is adopted. The multi-step optimization proposed herein to identify the main parameters of the material constitutive models is based on genetic algorithms (GA) and Bayesian model updating. The methodology consists of comparing available experimental tests from literature with the corresponding numerical results. New empirical relationships and probabilistic distributions of the optimized model parameters, such as post-yielding hardening ratio, isotropic hardening in compression and tension, plus initial curvature, are presented. Finally, utilizing both the GA-based and Bayesian-based calibration, an improvement of an existing analytical model for inelastic buckling of smooth steel rebars is proposed. Such analytical modelling can be efficient and reliable for future building codes and assessment guidelines for existing buildings.
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
G. Verderame;G. Fabbrocino;G. Manfredi
通讯作者:
G. Manfredi
DOI:
10.1061/(asce)st.1943-541x.0000143
发表时间:
2010-05
期刊:
Journal of Structural Engineering-asce
影响因子:
--
作者:
M. Scott;G. Fenves
通讯作者:
M. Scott;G. Fenves
影响因子:
4.6
作者:
K. K. Arani;M. Marefat;M. Ludovico;A. Prota;G. Manfredi
通讯作者:
G. Manfredi
影响因子:
5.5
作者:
Di Sarno, L.;Elnashai, A. S.;Manfredi, G.
通讯作者:
Manfredi, G.