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颗粒流的类固体和类流体行为的数值模型。

Numerical model for solid-like and fluid-like behavior of granular flows.

作者信息

Wang Yadong, Wu Wei

机构信息

Institute of Geotechnical Engineering, Boku University, Feistmantelstraße 4, 1180 Vienna, Austria.

出版信息

Acta Geotech. 2024;19(10):6483-6494. doi: 10.1007/s11440-024-02364-2. Epub 2024 Jul 16.

DOI:10.1007/s11440-024-02364-2
PMID:39421024
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11480177/
Abstract

We propose a constitutive model for both the solid-like and fluid-like behavior of granular materials by decomposing the stress tensor into quasi-static and collisional components. A hypoplastic model is adopted for the solid-like behavior in the quasi-static regime, while the viscous and dilatant behavior in the fluid-like regime is represented by a modified rheology model. This model effectively captures the transition between solid-like and fluid-like flows. Performance and validation of the proposed model are demonstrated through numerical simulations of element tests.

摘要

我们通过将应力张量分解为准静态分量和碰撞分量，提出了一种用于颗粒材料类固体和类流体行为的本构模型。对于准静态状态下的类固体行为，采用了一种亚塑性模型，而类流体状态下的粘性和剪胀行为则由一个修正的流变模型来表示。该模型有效地捕捉了类固体流和类流体流之间的转变。通过单元试验的数值模拟证明了所提模型的性能和有效性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/911607026adf/11440_2024_2364_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/d754f2d1f736/11440_2024_2364_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/fa2efeafc41e/11440_2024_2364_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/b00f19dbf014/11440_2024_2364_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/4653c1898b60/11440_2024_2364_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/94592147654b/11440_2024_2364_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/9bfe1be1072c/11440_2024_2364_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/8e29b83ddabb/11440_2024_2364_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/911607026adf/11440_2024_2364_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/d754f2d1f736/11440_2024_2364_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/fa2efeafc41e/11440_2024_2364_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/b00f19dbf014/11440_2024_2364_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/4653c1898b60/11440_2024_2364_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/94592147654b/11440_2024_2364_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/9bfe1be1072c/11440_2024_2364_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/8e29b83ddabb/11440_2024_2364_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b362/11480177/911607026adf/11440_2024_2364_Fig8_HTML.jpg

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本文引用的文献

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