锈损冷弯薄壁钢板的断裂机制与断裂模型

doi:10.11896/cldb.20060043

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Abstract In order to study the effects of corrosion damage on the fracture mechanism of cold-formed thin-walled steel plates, tensile tests were conducted on the standard specimens which were processed from the flat and corner parts of C-shaped steel purlin that has been used in an industrial environment for many years. The effects of rust pit depth,the depth-radius ratio and section loss rate on stress triaxiality and equivalent plastic strain of the model were studied by finite element numerical analysis. The tensile test results show that as the degree of rust increases, the plastic hardening stage and necking stage gradually shorten, and the yield stage gradually disappears, and the yield strength, ultimate strength and fracture strain of the specimen gradually decrease. The results of finite element analysis show that the stress triaxiality gradually increases with the increase of the rust pit depth and depth-radius ratio, but does not change significantly with the increase of the section loss rate. The equivalent plastic strain increases significantly with the increase of the rust pit depth and section loss rate, but first increases and then decreases with the increase of the depth-radius ratio. According to the fitting results, the void growth model (VGM model) and the stress modified critical strain mo-del (SMCS model) are modified to derive the fracture model of cold-formed thin-walled steel plates under pitting damage and comprehensive corrosion damage.

Key words： corrosion thin-walled steel plates fracture mechanism the void growth model (VGM model) the stress modified critical strain model (SMCS model)

Published: 03 August 2021

CLC number:

TU511

Fund:National Natural Science Foundation of China(51678477), National Key R&D Program of China (2016YFC0701305).

About author:: Shanhua Xu obtained his Ph.D. degree in structure engineering from Xi'an University of Architecture and Technology in 2003.He is currently a professor,doctoral supervisor and academic leader in structural engineering of Xi'an University of Architecture and Technology. He is mainly engaged in the study of durability of concrete structures and steel structures,and he has published more than 100 journal papers. He has taken charge of several scientific research projects,including 4 scientific research projects financially supported by national natural science foundation of China,1 project financially supported by national key researchand development program of China,and 1 project financially supported by Chinese postdoctoral science foundation,and so on.

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	XU Shanhua
	ZHAO Xiaomeng
	ZHANG Haijiang
	ZHANG Zongxing
	WANG Liang

Cite this article:

XU Shanhua,ZHAO Xiaomeng,ZHANG Haijiang, et al. Fracture Mechanism and Fracture Model of Cold-formed Thin-Walled Steel Plates with Rust Loss[J]. Materials Reports, 2021, 35(14): 14130-14135.

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http://www.mater-rep.com/EN/10.11896/cldb.20060043 OR http://www.mater-rep.com/EN/Y2021/V35/I14/14130

1 Li Y Q, Xu H J. Journal of Building Structure, 2019, 49(19), 91(in Chinese).
李元齐, 徐厚军.建筑结构, 2019,49(19),91.
2 Zhong G H. Progress in Steel Building Structures, 2002, 4(4), 31(in Chinese).
钟国辉.建筑钢结构进展, 2002,4(4),31.
3 Xu S H, Wang H, Su L, et al. Journal of Southeast University (Natural Science Edition), 2016,46(6),1257(in Chinese).
徐善华, 王皓, 苏磊, 等.东南大学学报(自然科学版), 2016,46(6),1257.
4 Qiu B, Xu S H. Materials for Mechanical Engineering, 2014,38(10), 60(in Chinese).
邱斌, 徐善华.机械工程材料, 2014,38(10),60.
5 Wang Y D, Xu S H, Wang H, et al. Construction and Building Mate-rials, 2017,152,777.
6 Nie B, Xu S H, Yu J, et al. Journal of Constructional Steel Research, 2019,162,1.
7 Xu S H, Li R, Su C, et al. Journal of Harbin Institute of Technology, 2018,50(12),74(in Chinese).
徐善华, 李柔, 苏超, 等.哈尔滨工业大学学报, 2018,50(12),74.
8 Rice J R, Tracey D M. Journal of the Mechanics and Physics of Solids,1969,17,201.
9 Hancock J W, Mackenzie A C. Pergamon,1976,24,147.
10 Johnson G R, Cook W H. Pergamon,1985,21,31.
11 Gurson A L. Journal of Engineering Materials & Technology,1977,99,2.
12 Liao F F, Wang W, Chen Y Y. Structural Engineering and Mechanics, 2012,42,153.
13 Xing J H, Guo C L, Zhang P, et al. Journal of Building Materials, 2015,18(2),228(in Chinese).
邢佶慧,郭长岚, 张沛,等.建筑材料学报, 2015,18(2),228.
14 Zhou H, Wang Y Q, Shi Y J, et al. Engineering Mechanics, 2015,32(5),37(in Chinese).
周晖, 王元清, 石永久, 等.工程力学, 2015,32(5),37.
15 Metallic materials-tensile testing at ambient temperature: GB/T 228- 2010. Standards Press of China, 2010(in Chinese).
金属材料室温拉伸试验: GB/T 228-2010. 中国标准出版社,2010.
16 Liu X Y, Wang Y Q, Shi Y J. Journal of Building Structures, 2016,37(6), 228(in Chinese).
刘希月,王元清,石永久. 建筑结构学报, 2016,37(6), 228.