建筑钢结构进展2018，Vol.20Issue(3)：19-25,32,8.DOI:10.13969/j.cnki.cn31-1893.2018.03.003
纤维单元单轴材料本构对圆钢管轴向滞回性能模拟的影响研究
A Study on the Influence of Uniaxial Constitutive Models on the Axial Hysteretic Behavior of Circular Steel Tubes
摘要
Abstract
Multi-beam method based on fiber elements and uniaxial constitutive models are widely used in the axial hysteretic behavior simulation of tubular members.With the tests data of three existing hysteretic behavior of circular steel tubes under axial loading as the benchmark,the influence of the four commonly used uniaxial constitutive models is investigated with OpenSees software and multi-beam method.The four models are kinematic hardening model without considering elastic-plastic transition section,combined hardening model without considering elastic-plastic transition section,kinematic hardening model considering elastic-plastic transition section and combined hardening model considering elastic-plastic transition section.The comparisons between test curves and numerical simulation curves are presented.The results show the combined hardening model considering elastic-plastic transition section can be used to simulate the hysteretic behavior of the circular steel tubes,while kinematic hardening model without considering the elastic-plastic transition section cannot effectively simulate the hysteretic behavior of circular steel tubes.Elastic-plastic transition parameters influence the hysteretic behavior significantly,and this should be considered in the simulation.Isotropic hardening coefficients hardly impact the hysteretic behavior.The material parameters of different members should be determined on the experimental data since they may vary largely with different specimens.关键词
纤维单元/单轴材料本构/OpenSees/多段梁法/轴向滞回性能Key words
fiber member/uniaxial constitutive model/OpenSees/multi-beam method/axial hysteretic behavior分类
建筑与水利引用本文复制引用
杨大彬,胡明娜,周学军,姚云龙..纤维单元单轴材料本构对圆钢管轴向滞回性能模拟的影响研究[J].建筑钢结构进展,2018,20(3):19-25,32,8.基金项目
国家自然科学基金(51308326),山东省自然科学基金(ZR2017MEE045) （51308326）
