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Mechanical Behavior and Damage Modeling of Dolomite Under Drying–Wetting Cycles and Variable Lower Bound Cyclic Loading.

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Title: Mechanical Behavior and Damage Modeling of Dolomite Under Drying–Wetting Cycles and Variable Lower Bound Cyclic Loading.
Authors: Yang, Xinqi1 (AUTHOR), Li, Qihang1,2 (AUTHOR), Wang, Yunmin3 (AUTHOR), Li, Xiaoshuang1,4,5 (AUTHOR) xsli2011@cczu.edu.cn, Lu, Jun6 (AUTHOR), Xie, Yanhong7 (AUTHOR), YONGLIANG, HE (AUTHOR) hyl@tyust.edu.cn
Source: Geofluids. 7/7/2026, Vol. 2026, p1-19. 19p.
Subject Terms: *Dolomite, *Cyclic loads, *Strains & stresses (Mechanics), *Damage models, *Continuum damage mechanics, *Energy dissipation, *Rock slopes
Abstract: To investigate the long‐term stability of open‐pit mine slopes under the coupled effects of seasonal rainfall‐induced drying–wetting (D‐W) cycles and mining‐related transportation machinery loads, variable lower limit cyclic loading tests were conducted under a confining pressure of 1 MPa on intact dolomite specimens subjected to 0, 1, 5, 10, and 30 D‐W cycles. The evolution of physical and mechanical properties, energy dissipation behavior, and failure modes was systematically investigated. Results show that water absorption increased significantly from 0.48% to 1.56% with an increasing number of D‐W cycles, whereas the peak strength gradually decreased. Specifically, peak strain increased markedly in the early stage and then tended to stabilize. As the lower stress limit increased, the peak strength exhibited a quadratic trend. Moreover, when the lower stress limit was ≤ 15 MPa, cyclic loading produced a strengthening effect, with the peak strength increasing by up to 10.2%. The dissipated energy density increased significantly with the number of D‐W cycles, and a damage constitutive model—derived primarily from theoretical analysis and refined through empirical correction—was established. Moreover, increasing the lower stress limit promoted a transition in the macroscopic failure mode from tensile to shear failure, which was further intensified by D‐W cycling. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 195176674
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PubType: Academic Journal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Mechanical Behavior and Damage Modeling of Dolomite Under Drying–Wetting Cycles and Variable Lower Bound Cyclic Loading.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Xinqi%22">Yang, Xinqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Qihang%22">Li, Qihang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yunmin%22">Wang, Yunmin</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xiaoshuang%22">Li, Xiaoshuang</searchLink><relatesTo>1,4,5</relatesTo> (AUTHOR)<i> xsli2011@cczu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Lu%2C+Jun%22">Lu, Jun</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Yanhong%22">Xie, Yanhong</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22YONGLIANG%2C+HE%22">YONGLIANG, HE</searchLink> (AUTHOR)<i> hyl@tyust.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Geofluids%22">Geofluids</searchLink>. 7/7/2026, Vol. 2026, p1-19. 19p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Dolomite%22">Dolomite</searchLink><br />*<searchLink fieldCode="DE" term="%22Cyclic+loads%22">Cyclic loads</searchLink><br />*<searchLink fieldCode="DE" term="%22Strains+%26+stresses+%28Mechanics%29%22">Strains & stresses (Mechanics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Damage+models%22">Damage models</searchLink><br />*<searchLink fieldCode="DE" term="%22Continuum+damage+mechanics%22">Continuum damage mechanics</searchLink><br />*<searchLink fieldCode="DE" term="%22Energy+dissipation%22">Energy dissipation</searchLink><br />*<searchLink fieldCode="DE" term="%22Rock+slopes%22">Rock slopes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To investigate the long‐term stability of open‐pit mine slopes under the coupled effects of seasonal rainfall‐induced drying–wetting (D‐W) cycles and mining‐related transportation machinery loads, variable lower limit cyclic loading tests were conducted under a confining pressure of 1 MPa on intact dolomite specimens subjected to 0, 1, 5, 10, and 30 D‐W cycles. The evolution of physical and mechanical properties, energy dissipation behavior, and failure modes was systematically investigated. Results show that water absorption increased significantly from 0.48% to 1.56% with an increasing number of D‐W cycles, whereas the peak strength gradually decreased. Specifically, peak strain increased markedly in the early stage and then tended to stabilize. As the lower stress limit increased, the peak strength exhibited a quadratic trend. Moreover, when the lower stress limit was ≤ 15 MPa, cyclic loading produced a strengthening effect, with the peak strength increasing by up to 10.2%. The dissipated energy density increased significantly with the number of D‐W cycles, and a damage constitutive model—derived primarily from theoretical analysis and refined through empirical correction—was established. Moreover, increasing the lower stress limit promoted a transition in the macroscopic failure mode from tensile to shear failure, which was further intensified by D‐W cycling. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1155/gfl/5592198
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 1
    Subjects:
      – SubjectFull: Dolomite
        Type: general
      – SubjectFull: Cyclic loads
        Type: general
      – SubjectFull: Strains & stresses (Mechanics)
        Type: general
      – SubjectFull: Damage models
        Type: general
      – SubjectFull: Continuum damage mechanics
        Type: general
      – SubjectFull: Energy dissipation
        Type: general
      – SubjectFull: Rock slopes
        Type: general
    Titles:
      – TitleFull: Mechanical Behavior and Damage Modeling of Dolomite Under Drying–Wetting Cycles and Variable Lower Bound Cyclic Loading.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yang, Xinqi
      – PersonEntity:
          Name:
            NameFull: Li, Qihang
      – PersonEntity:
          Name:
            NameFull: Wang, Yunmin
      – PersonEntity:
          Name:
            NameFull: Li, Xiaoshuang
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            NameFull: Lu, Jun
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            NameFull: Xie, Yanhong
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            NameFull: YONGLIANG, HE
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          Dates:
            – D: 07
              M: 07
              Text: 7/7/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 14688115
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            – Type: volume
              Value: 2026
          Titles:
            – TitleFull: Geofluids
              Type: main
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