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DOI	10.5194/tc-11-1465-2017
	Numerical homogenization of the viscoplastic behavior of snow based on X-ray tomography images
	Wautier A.; Geindreau C.; Flin F.
发表日期	2017
ISSN	19940416
卷号	11 期号:3
英文摘要	While the homogenization of snow elastic properties has been widely reported in the literature, homogeneous rate-dependent behavior responsible for the densification of the snowpack has hardly ever been upscaled from snow microstructure. We therefore adapt homogenization techniques developed within the framework of elasticity to the study of snow viscoplastic behavior. Based on the definition of kinematically uniform boundary conditions, homogenization problems are applied to 3-D images obtained from X-ray tomography, and the mechanical response of snow samples is explored for several densities. We propose an original post-processing approach in terms of viscous dissipated powers in order to formulate snow macroscopic behavior. Then, we show that Abouaf models are able to capture snow viscoplastic behavior and we formulate a homogenized constitutive equation based on a density parametrization. Eventually, we demonstrate the ability of the proposed models to account for the macroscopic mechanical response of snow for classical laboratory tests. © Author(s) 2017.
学科领域	constitutive equation; homogeneity; image analysis; kinematics; numerical method; snow cover; snowpack; tomography; viscoplasticity
语种	英语
scopus关键词	constitutive equation; homogeneity; image analysis; kinematics; numerical method; snow cover; snowpack; tomography; viscoplasticity
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119381
作者单位	Université Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering), 3SR, Grenoble, 38000, France; Météo-France - CNRS, CNRM UMR 3589, CEN, Saint Martin d'Hères, 38400, France; AgroParisTech-ENGREF, 19 avenue du Maine, Paris, 75732, France; Irstea UR RECOVER, 3275 Rte Cézanne, CS 40061, Aix-en-Provence Cedex 5, 13182, France; Université Grenoble Alpes, Irstea, UR ETGR, 2 rue de la Papeterie-BP 76, St-Martin-d'Hères, 38402, France
推荐引用方式 GB/T 7714	Wautier A.,Geindreau C.,Flin F.. Numerical homogenization of the viscoplastic behavior of snow based on X-ray tomography images[J],2017,11(3).
APA	Wautier A.,Geindreau C.,&Flin F..(2017).Numerical homogenization of the viscoplastic behavior of snow based on X-ray tomography images.Cryosphere,11(3).
MLA	Wautier A.,et al."Numerical homogenization of the viscoplastic behavior of snow based on X-ray tomography images".Cryosphere 11.3(2017).