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Journal of Zhejiang University SCIENCE A 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/jzus.A2200286


DEM study of hysteretic behavior and deformation characteristics of rockfill material under cyclic loading


Author(s):  Ming-chun LIN, Guan-qi WANG, Jian ZHOU, Wei ZHOU, Ni AN, Gang MA

Affiliation(s):  State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; more

Corresponding email(s):   zw_mxx@whu.edu.cn

Key Words:  Granular material, Discrete element method (DEM), Plastic deformation, Cyclic loading, Hysteretic behavior


Ming-chun LIN, Guan-qi WANG, Jian ZHOU, Wei ZHOU, Ni AN, Gang MA. DEM study of hysteretic behavior and deformation characteristics of rockfill material under cyclic loading[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .

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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2200286"
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%T DEM study of hysteretic behavior and deformation characteristics of rockfill material under cyclic loading
%A Ming-chun LIN
%A Guan-qi WANG
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%A Wei ZHOU
%A Ni AN
%A Gang MA
%J Journal of Zhejiang University SCIENCE A
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%I Zhejiang University Press & Springer
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A1 - Ming-chun LIN
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A1 - Wei ZHOU
A1 - Ni AN
A1 - Gang MA
J0 - Journal of Zhejiang University Science A
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Y1 - 1998
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A2200286


Abstract: 
Granular geomaterials under different loading conditions manifest various behaviors, such as hysteresis. Understanding their hysteretic behavior and deformation characteristics is the basis for establishing a constitutive relation with excellent performance in deformation prediction. The deformation characteristics of crushable particle materials are analyzed through a series of cyclic loading tests conducted by numerical simulation. The hysteretic behavior is investigated from a particle scale. The increase in particles with contacts less than two may be responsible for the residual strain, and the particle breakage further promotes particle rearrangement and volume contraction. Both the accumulation of plastic strain and the resilient modulus are found to be related to confining pressures, stress levels, cyclic loading amplitudes, and the number of cycles. The plastic strain accumulation can be written as a function of the number of cycles and an evolution function of resilient modulus is proposed.

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