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DOI	10.1016/j.coldregions.2021.103226
	Strain localization of a frozen sand under different test conditions
	Yao, Xiaoliang; Wang, Wenli; Zhang, Mingyi; Wang, Songhe; Wang, Liping
发表日期	2021
ISSN	0165-232X
EISSN	1872-7441
卷号	183
英文摘要	In this paper, a series of plane strain tests were conducted on a coarse frozen sand under different temperatures and loading conditions of constant strain rate and stress. With the overall strain fields obtained with particle image velocimetry (PIV) technique, the influence of loading conditions, temperature and strain rate on the strain localization characteristics of the frozen sand was analyzed. It is indicated that, under the same loading conditions, the temperature and strain rate have little influence on the shear band formation process. Both of the single and X shape shear band are observed under different test conditions. The X shape shear bands are more likely to be generated under strain rate lower than the magnitude of 10(-3) min(-1). When the sand samples are at failure, most part of the strain field is at dilatancy state. The shear band inclination angle and width are inversely proportional to the temperature and independent of strain rate and loading conditions. Further analysis indicated that, within the testing temperature range in this study, the widely accepted Coulomb's solution of unfrozen soils is applicable as the upper bound of the measured shear band inclination angle of the tested frozen sand, and the measured shear band width falls in the range of 10 to 20 times of mean particle size.
英文关键词	Frozen soils; Strain localization; Shear band; Test conditions
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS记录号	WOS:000617782700003
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240152
作者单位	[Yao, Xiaoliang; Wang, Wenli; Wang, Songhe; Wang, Liping] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China; [Zhang, Mingyi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yao, Xiaoliang,Wang, Wenli,Zhang, Mingyi,et al. Strain localization of a frozen sand under different test conditions[J]. 中国科学院西北生态环境资源研究院,2021,183.
APA	Yao, Xiaoliang,Wang, Wenli,Zhang, Mingyi,Wang, Songhe,&Wang, Liping.(2021).Strain localization of a frozen sand under different test conditions.COLD REGIONS SCIENCE AND TECHNOLOGY,183.
MLA	Yao, Xiaoliang,et al."Strain localization of a frozen sand under different test conditions".COLD REGIONS SCIENCE AND TECHNOLOGY 183(2021).