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Discrete element analyses of the dynamic response of granular soil cushion against rockfall inclined impact.

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Title: Discrete element analyses of the dynamic response of granular soil cushion against rockfall inclined impact.
Authors: Shen, Weigang1,2,3 (AUTHOR) wgshen@swjtu.edu.cn, Bian, Zhilin1 (AUTHOR) 2024201281@my.swjtu.edu.cn, Zhao, Xiaoyan1 (AUTHOR) xyzhao2@swjtu.edu.cn, Luo, Gang1 (AUTHOR) luogang@home.swjtu.edu.cn, Zhang, Yuping2,3 (AUTHOR) zhangyp@smail.nju.edu.cn
Source: Natural Hazards. Jun2025, Vol. 121 Issue 10, p12353-12369. 17p.
Subject Terms: *Discrete element method, *Tangential force, *Rockfall, *Impact testing, *Soil granularity, *Angles
Abstract: This study investigates the inclined impact of rockfall onto a soil cushion covering on rock shed via a numerical model established by the discrete element method (DEM). In the numerical DEM model, the rockfall and soil cushion are mimicked as spherical particles, while the rock shed is simplified as a layer of fixed spherical particles. The numerical model is first validated and then is used to perform a series of impact tests with various impact velocities and impact angles. Based on these tests, the dependence of the impact force, transmitted force and penetration depth on the impact angle are analyzed. The corresponding results indicate that increasing the impact angle can effectively decrease the penetration depth, the normal impact force and normal transmitted force. The tangential impact force and tangential transmitted force could increase with the impact angle for the cases of the impact angle smaller than 30°. In addition, the dependence of the tangential impact force and tangential transmitted force on the impact angle is interpreted from the point of view of force chain. The proposed findings and results can give some new insights for the design of rock shed. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 186016099
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Discrete element analyses of the dynamic response of granular soil cushion against rockfall inclined impact.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Shen%2C+Weigang%22">Shen, Weigang</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> wgshen@swjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Bian%2C+Zhilin%22">Bian, Zhilin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2024201281@my.swjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Xiaoyan%22">Zhao, Xiaoyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xyzhao2@swjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Gang%22">Luo, Gang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luogang@home.swjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yuping%22">Zhang, Yuping</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> zhangyp@smail.nju.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Natural+Hazards%22">Natural Hazards</searchLink>. Jun2025, Vol. 121 Issue 10, p12353-12369. 17p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Discrete+element+method%22">Discrete element method</searchLink><br />*<searchLink fieldCode="DE" term="%22Tangential+force%22">Tangential force</searchLink><br />*<searchLink fieldCode="DE" term="%22Rockfall%22">Rockfall</searchLink><br />*<searchLink fieldCode="DE" term="%22Impact+testing%22">Impact testing</searchLink><br />*<searchLink fieldCode="DE" term="%22Soil+granularity%22">Soil granularity</searchLink><br />*<searchLink fieldCode="DE" term="%22Angles%22">Angles</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates the inclined impact of rockfall onto a soil cushion covering on rock shed via a numerical model established by the discrete element method (DEM). In the numerical DEM model, the rockfall and soil cushion are mimicked as spherical particles, while the rock shed is simplified as a layer of fixed spherical particles. The numerical model is first validated and then is used to perform a series of impact tests with various impact velocities and impact angles. Based on these tests, the dependence of the impact force, transmitted force and penetration depth on the impact angle are analyzed. The corresponding results indicate that increasing the impact angle can effectively decrease the penetration depth, the normal impact force and normal transmitted force. The tangential impact force and tangential transmitted force could increase with the impact angle for the cases of the impact angle smaller than 30°. In addition, the dependence of the tangential impact force and tangential transmitted force on the impact angle is interpreted from the point of view of force chain. The proposed findings and results can give some new insights for the design of rock shed. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s11069-025-07283-3
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 12353
    Subjects:
      – SubjectFull: Discrete element method
        Type: general
      – SubjectFull: Tangential force
        Type: general
      – SubjectFull: Rockfall
        Type: general
      – SubjectFull: Impact testing
        Type: general
      – SubjectFull: Soil granularity
        Type: general
      – SubjectFull: Angles
        Type: general
    Titles:
      – TitleFull: Discrete element analyses of the dynamic response of granular soil cushion against rockfall inclined impact.
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            NameFull: Shen, Weigang
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            NameFull: Bian, Zhilin
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            NameFull: Zhao, Xiaoyan
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            NameFull: Luo, Gang
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            NameFull: Zhang, Yuping
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          Dates:
            – D: 15
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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              Value: 0921030X
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              Value: 121
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              Value: 10
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            – TitleFull: Natural Hazards
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