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Sliding Friction Heat in High-Speed

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论文题目


   
A Discrete Element Analysis of the Sliding Friction Heat in High-Speed and Long-Runout Landslides

ZHU Yao et al. 2020. EARTHQUAKE RESEARCH IN CHINA


 

研究内容


 

Earthquake is one of the main causes of high-speed and long-runout landslides. Generally, the heat generated in the sliding zone is significant in such devastating landslides. In this study, we establish a two dimensional . The model not only suggests that heat is produced by friction and fracturing, but also simulates the process of tension generation in cracks and the generation of a high heat zone near the sliding region. Besides, the heat field graph indicates a banded high heat belt that is related to the location of the thickest sliding body. The logarithms of the total calorific value and the highest value in the heat zone during the sliding process are linearly related to the logarithm of the landslide height.

Figure 1 (a) Initial random-packing assemblage.(b) Additional gravity element deposition.(c) The coordinate figure in layers. (d) Cutting slope profile andgiving layer characteristics to slope model

Figure 2 (a)-(c) Distribution of velocity field at 1, 6, and 12 s.(d)-(f) State of element bond at 1, 6, and 12 s
Figure 3 (a) -(d) Distribution of heat during sliding at 1, 6, 9, and 12 s

 

了解详情


 

ZHU Yao, ZHU Chengguang, LIU Chun, et al. 2020. A Discrete Element Analysis of the Sliding FrictionHeat in High-Speed and Long-Runout Landslides[J]. EARTHQUAKE RESEARCH IN CHINA, 34(1): 96-109. 

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首次发布时间:2023-12-30
最近编辑:10月前
MatDEM
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