Low-cycle fatigue mashing behaviours of HTRB630 high-strength steel exposed to high temperatures

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science and Technology Pub Date : 2023-09-15 DOI:10.1080/02670836.2023.2257536
Li Gao, Mei-Ling Zhuang, Gong Zuo, Chuanzhi Sun
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Abstract

AbstractThe tensile test and low-cycle fatigue test of HTRB630 high-strength steel bars after high-temperature exposure were investigated. Based on the plastic strain energy density theory of mashing behaviours, the values of parameters K and n in the Ramberg–Osgood stress–strain relationship were obtained. The Coffin–Manson model was modified for further modelling of specimens exposed to different temperatures. A fitted formula for the relationship between the plastic strain energy density and fatigue life of HTRB630 high-strength steel bar specimens was established. The parameters obtained in this study can provide a reference for further investigation of the seismic performance of HTRB630 steel bars reinforced concrete structures after exposure to high temperatures.KEYWORDS: HTRB630 high-strength steel barshigh temperature exposurelow-cycle fatigue propertymashing behaviourmodified Coffin–Manson model AcknowledgementsThis research has been supported by China Scholarship Council; the Natural Science Research Project of Jiangsu Province Colleges and Universities (21KJD560002), China; Suqian Natural Science Foundation Project (K202012), China; Project funded by the research and innovation team of engineering structure seismic technology of Suqian University in 2020, China; Suqian City Guiding Science and Technology Plan Project (Z2020137), China; Research and Innovation Team Project of Suqian College (2021TD04), China; and the Fifth Provincial Research Funding Project of ‘333 High-level Talent Training’ in 2020 (BRA2020241), China; The Youth Fund Project of Suqian College (2023XQNA03).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Project funded by the Research And Innovation Team of Engineering Structure Seismic Technology of Suqian University in 2020, China; Suqian City Guiding Science and Technology Plan Project [grant number Z2020137]; the Natural Science Research Project of Jiangsu Province Colleges and Universities [grant number 21KJD560002]; The Youth Fund Project of Suqian College [grant number 2023XQNA03]; China Scholarship Council; Suqian Natural Science Foundation Project [grant number K202012]; the Fifth Provincial Research Funding Project of “333 High-level Talent Training” in 2020 [grant number BRA2020241]; Research and Innovation Team Project of Suqian College [grant number 2021TD04].
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高温下HTRB630高强度钢的低周疲劳捣碎行为
摘要对HTRB630高强度钢筋高温暴露后的拉伸试验和低周疲劳试验进行了研究。基于塑性应变能密度理论,得到了Ramberg-Osgood应力-应变关系中参数K和n的取值。为了进一步模拟暴露在不同温度下的标本,对Coffin-Manson模型进行了修改。建立了HTRB630高强钢筋塑性应变能密度与疲劳寿命关系的拟合公式。本研究获得的参数可为进一步研究高温作用下HTRB630钢筋混凝土结构的抗震性能提供参考。关键词:HTRB630高强度钢棒材高温暴露低周疲劳性能捣碎行为修正Coffin-Manson模型江苏省高等学校自然科学研究项目(21KJD560002);宿迁市自然科学基金项目(K202012);宿迁大学工程结构抗震技术研究创新团队2020年资助项目;宿迁市科技先导计划项目(Z2020137);宿迁学院科研创新团队项目(2021TD04);2020年省第五期“333高层次人才培养”科研资助项目(BRA2020241);宿迁学院青年基金项目(2023XQNA03)。披露声明作者未报告潜在的利益冲突。本研究受宿迁大学工程结构抗震技术研究创新团队2020年度专项资助;宿迁市科技先导计划项目[批准号Z2020137];江苏省高等学校自然科学研究项目[批准号21KJD560002];宿迁学院青年基金项目[批准号2023XQNA03];中国国家留学基金委;宿迁市自然科学基金项目[批准号K202012];2020年省第五期“333高层次人才培养”科研资助项目[批准号:BRA2020241];宿迁学院科研创新团队项目[批准号2021TD04]。
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来源期刊
Materials Science and Technology
Materials Science and Technology 工程技术-材料科学:综合
CiteScore
2.70
自引率
5.60%
发文量
0
审稿时长
3 months
期刊介绍: 《Materials Science and Technology》(MST) is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.
期刊最新文献
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