东南大学学报（自然科学版）2011，Vol.41Issue(6)：1259-1265,7.DOI:10.3969/j.issn.1001-0505.2011.06.025
Q460C高强度结构钢材循环加载试验研究
Cyclic loading tests on high strength structural steel Q460C
摘要
Abstract
In order to obtain the hysteretic behavior, monotonic and cyclic loading experiments of high strength structural steel Q460C, including 3 monotonic tensile specimens, 3 monotonic compression specimens and 10 different cyclic loading specimens, were conducted, and the stress-strain curves of monotonic and cyclic loading were plotted and compared. Moreover the macroscopic experimental phenomena and the electron microscopic scanning results of specimen fractures were analyzed. Based on the Ramberg-Osgood model, the cyclic skeleton curves were fitted, and the corresponding formulae to calculate cyclic skeleton curves for the high strength structural steel Q460C were proposed. The differences between the skeleton curves of symmetrical cyclic loading and the stress-strain curve of monotonic loading were compared. Finally, based on the Chaboche model for steel plastic constitutive relationship, the model parameters were calibrated by the test. Then this model were applied to simulate the above cyclic loading tests by the software ABAQUS. The finite element analysis results agree well with the test results.关键词
高强度钢材/钢结构/循环加载/滞回性能/本构模型/有限元分析Key words
high strength steel/steel structure/cyclic loading/hysteretic behaviour/constitutive model/finite element analysis分类
建筑与水利引用本文复制引用
施刚,王飞,戴国欣,王元清,石永久..Q460C高强度结构钢材循环加载试验研究[J].东南大学学报（自然科学版）,2011,41(6):1259-1265,7.基金项目
国家自然科学基金重点资助项目(51038006). （51038006）
