[1]石永久,王佼姣,王元清,等.循环荷载下低屈服点钢材LYP225的力学性能[J].东南大学学报(自然科学版),2014,44(6):1260-1265.[doi:10.3969/j.issn.1001-0505.2014.06.029]
 Shi Yongjiu,Wang Jiaojiao,Wang Yuanqing,et al.Mechanical performance of low-yield-point steel LYP225 under cyclic loading[J].Journal of Southeast University (Natural Science Edition),2014,44(6):1260-1265.[doi:10.3969/j.issn.1001-0505.2014.06.029]
点击复制

循环荷载下低屈服点钢材LYP225的力学性能()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第6期
页码:
1260-1265
栏目:
土木工程
出版日期:
2014-11-20

文章信息/Info

Title:
Mechanical performance of low-yield-point steel LYP225 under cyclic loading
作者:
石永久1王佼姣1王元清1潘鹏1牧野俊雄2齐雪2
1清华大学土木工程安全与耐久教育部重点实验室, 北京100084; 2日本住金关西工业株式会社(东京事务所), 东京101-0032
Author(s):
Shi Yongjiu1 Wang Jiaojiao1 Wang Yuanqing1 Pan Peng1 Toshio Makino2 Qi Xue2
1Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China
2Sumikin Kansai Industries Co., Ltd.(Tokyo Office), Tokyo 101-0032, Japan
关键词:
循环加载 等向强化 随动强化 参数标定 有限元分析
Keywords:
cyclic loading isotropic hardening kinematic hardening parameter calibration finite element analysis(FEA)
分类号:
TU391
DOI:
10.3969/j.issn.1001-0505.2014.06.029
摘要:
为了研究低屈服点钢材LYP225的循环本构关系,对18个试件进行单调加载和循环加载,研究其单调曲线、滞回特点、破坏形态等.基于Ramberg-Osgood模型拟合了对称逐级加载下的循环骨架曲线,通过试验滞回数据标定了基于Chaboche模型的等向强化和随动强化参数,并将其输入到Abaqus软件的混合强化模型中,对强化参数的准确性进行验证.结果表明:LYP225钢材的应力-应变关系与加载历史相关;在不同加载制度下LYP225钢材均表现出良好的延性特征;采用Ramberg-Osgood模型能较好地模拟LYP225钢材在循环对称逐级加载下的骨架曲线;将标定的混合强化参数输入到Abaqus软件中,所得结果能准确模拟LYP225钢材的滞回曲线.因此,LYP225钢材在循环荷载下的性能不同于单调荷载,通过试验数据拟合的强化参数可用于整体结构中的地震反应分析.
Abstract:
In order to study the cyclic constitutive relationship of low-yield-point steel LYP225, 18 specimens were tested under monotonic loading and cyclic loading. The monotonic curves, hysteretic performance and failure modes were discussed. The skeleton curves were fitted under cyclic loading with the increase of the strain step by step based on the Ramberg-Osgood model. The isotropic hardening and kinematic hardening parameters were calibrated according to the test data based on the Chaboche model and input into the combined hardening model in Abaqus to verify the accuracy of the calibration. The results show that the stress-strain relationship of LYP225 is related to the loading history. LYP225 shows excellent ductility under different loading systems. The Ramberg-Osgood model can simulate the cyclic skeleton curves with the increase of the strain step by step. The finite element results can simulate the hysteretic curves of LYP225 accurately with the calibrated hardening parameters input into Abaqus. Therefore, the performance of LYP225 under cyclic loading is different from that under monotonic loading. The calibrated hardening parameters according to the test data can be used in earthquake response analysis of the overall steel structure.

参考文献/References:

[1] Shi Yongjiu, Wang Meng, Wang Yuanqing. Experimental and constitutive model study of structural steel under cyclic loading [J]. Journal of Constructional Steel Research, 2011, 67(8): 1185-1197.
[2] Shi Gang, Wang Meng, Bai Yu, et al. Experimental and modeling study of high-strength structural steel under cyclic loading [J]. Engineering Structures, 2012, 37:1-13.
[3] 施刚,王飞,戴国欣,等.Q460D高强度结构钢材循环加载试验研究[J].土木工程学报,2012,45(7):48-55.
  Shi Gang, Wang Fei, Dai Guoxin, et al. Experimental study of high strength structural steel Q460D under cyclic loading [J]. China Civil Engineering Journal, 2012, 45(7): 48-55.(in Chinese)
[4] Nip K H, Gardner L, Davies C M, et al. Extremely low cycle fatigue tests on structural carbon steel and stainless steel [J]. Journal of Constructional Steel Research, 2010,66(1): 96-110.
[5] 王元清, 常婷, 石永久. 循环荷载下奥氏体不锈钢的本构关系试验研究 [J]. 东南大学学报:自然科学版, 2012, 42(6): 1175-1179.
  Wang Yuanqing, Chang Ting, Shi Yongjiu. Experimental study on constitutive relationship in austenitic stainless steel under cyclic loading [J]. Journal of Southeast University:Natural Science Edition, 2012, 42(6): 1175-1179.(in Chinese)
[6] Dusicka P, Itani A M, Buckle I G. Cyclic response of plate steels under large inelastic strains [J]. Journal of Constructional Steel Research, 2007, 63(2): 156-164.
[7] Saeki Eiichiro, Sugisawa Mitsuru, Yamaguchi Tanemi, et al. Mechanical properties of low yield point steels [J]. Journal of Materials in Civil Engineering, 1998, 10(3): 143-152.
[8] Ramberg W, Osgood W R. Description of stress-strain curves by three parameters [R]. Washington DC, USA: National Advisory Committee for Aeronautics, 1943.
[9] Chaboche J L. Time-independent constitutive theories for cyclic plasticity [J]. International Journal of Plasticity, 1986, 2(2): 149-188.
[10] Abaqus Inc.. Abaqus analysis user’s manual [EB/OL].(2012)[2013-12-20]. https://www.tu-chemnitz.de/projekt/abq_hilfe/docs/v6.12/books/usb/default.htm.

备注/Memo

备注/Memo:
收稿日期: 2014-04-24.
作者简介: 石永久(1962—),男,博士,教授,博士生导师,shiyj@tsinghua.edu.cn.
基金项目: 国家自然科学基金资助项目(51038006).
引用本文: 石永久,王佼姣,王元清,等.循环荷载下低屈服点钢材LYP225的力学性能[J].东南大学学报:自然科学版,2014,44(6):1260-1265. [doi:10.3969/j.issn.1001-0505.2014.06.029]
更新日期/Last Update: 2014-11-20