Experimental analysis of cyclic loading on a cohesionless granular system

The cyclic loading mechanical response of dense granular materials under biaxial compressions was experimentally investigated. Ratcheting occurred and evolved throughout the experiment. The results suggest that permanent displacement primarily occurs during the first cycle; the generation of ratchet...

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Bibliographic Details
Published in:Granular matter 2016-02, Vol.18 (1), p.1, Article 10
Main Authors: Bi, Zhongwei, Huang, Wanfu, Sun, Qicheng, Sun, Shuwei
Format: Article
Language:English
Subjects:
Complex Fluids and Microfluidics
Data analysis
Engineering Fluid Dynamics
Engineering Thermodynamics
Foundations
Geoengineering
Granular materials
Heat and Mass Transfer
Hydraulics
Industrial Chemistry/Chemical Engineering
Materials Science
Mechanical properties
Original Paper
Physics
Physics and Astronomy
Soft and Granular Matter
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Summary:The cyclic loading mechanical response of dense granular materials under biaxial compressions was experimentally investigated. Ratcheting occurred and evolved throughout the experiment. The results suggest that permanent displacement primarily occurs during the first cycle; the generation of ratcheting is principally driven by the occurrence of stick–slip events and the changes in porosity. In different cycles, the occurrence of stick–slip events obeys the power law relationship, and the change in porosity tends to approach a homogenous state. Simultaneously, the magnitude of the initial force plays an important role for increasing ratcheting in granular system.
ISSN:1434-5021
1434-7636
DOI:10.1007/s10035-016-0611-7