Gas Permeability and Porosity Evolution of a Porous Sandstone Under Repeated Loading and Unloading Conditions
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DOI: 10.1007/s00603-017-1215-1
Abstract: The permeability and porosity of a porous sandstone under cyclic loading–unloading conditions are measured using an integrated permeability and porosity measurement system. Mineral content analysis of the rock is performed. The rock contains open microcracks… read more here.
Keywords: porosity; unloading conditions; permeability; permeability porosity ... See more keywords
Experimental Study on Rock Strength and Deformation Characteristics Under Triaxial Cyclic Loading and Unloading Conditions
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DOI: 10.1007/s00603-020-02289-8
Abstract: The mechanical behavior of rock under cyclic loading is quite complicated compared to monotonic loading or unloading conditions. The triaxial cyclic loading and unloading testing of rock specimens under 6 confining pressures ( σ 3… read more here.
Keywords: strength; unloading conditions; cyclic loading; loading unloading ... See more keywords
Influence of freeze-thaw cycles on the degradation of sandstone after loading and unloading
Sign Up to like & getrecommendations! Published in 2019 at "Bulletin of Engineering Geology and the Environment"
DOI: 10.1007/s10064-019-01634-8
Abstract: The physical and mechanical properties of rocks in cold regions are strongly affected by temperature fluctuations and stress states. In this study, the deterioration of sandstone subjected to freeze-thaw (F-T) cycles and different stress states… read more here.
Keywords: thaw cycles; freeze thaw; loading unloading; sandstone ... See more keywords
Experiment and Study on Mechanical Property of Sandstone Post-peak Under the Cyclic Loading and Unloading
Sign Up to like & getrecommendations! Published in 2017 at "Geotechnical and Geological Engineering"
DOI: 10.1007/s10706-017-0414-6
Abstract: Engineering research has shown that the surrounding rock of deep roadways experienced many times of post-peak cyclic loading and unloading. So studying on rock mechanical characteristics of post-peak loading and unloading is helpful to control… read more here.
Keywords: peak cyclic; loading unloading; cyclic loading; post peak ... See more keywords
Single Helix Screw Pile Behavior Under Compressive Loading/Unloading Cycles in Dense Sand
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DOI: 10.1007/s10706-020-01385-4
Abstract: The application of screw pile is increasing in recent times due to its performance under compressive, tensile and lateral loading conditions. However, its performance under repeated loading cycles has not been extensively investigated. As in… read more here.
Keywords: screw pile; compressive loading; loading unloading; unloading cycles ... See more keywords
Analysis of Broken Coal Permeability Evolution Under Cyclic Loading and Unloading Conditions by the Model Based on the Hertz Contact Deformation Principle
Sign Up to like & getrecommendations! Published in 2017 at "Transport in Porous Media"
DOI: 10.1007/s11242-017-0908-y
Abstract: The permeability of the caved zone in a longwall operation impact many issues related to ventilation and methane control, as well as to interaction of gob gas ventholes with the mining environment. Insofar as the… read more here.
Keywords: stress sensitivity; permeability; deformation; loading unloading ... See more keywords
Experimental investigation on damage evolution behaviour of a granitic rock under loading and unloading
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Central South University"
DOI: 10.1007/s11771-018-3819-3
Abstract: In-situ rock failures can result from stress changes due to pure loading and/or unloading. Understanding of the damage evolution behavior in brittle rocks during loading and unloading is imperative for the designs of rock structures.… read more here.
Keywords: loading unloading; granitic rock; damage evolution; damage ... See more keywords
Experimental and finite element analysis of marble with double pre-existing flaws under loading-unloading conditions
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-020-05368-w
Abstract: In order to study the failure mechanism of fractured rock mass under different loading and unloading conditions, marble was used as the test material, which contained 45° double pre-existing cracks. The main processes, which initiation,… read more here.
Keywords: pre existing; double pre; unloading conditions; pre ... See more keywords
Permeability-enhanced rate model for coal permeability evolution and its application under various triaxial stress conditions
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-020-05777-x
Abstract: Knowledge on permeability enhancement is of great significance for the exploitation of coalbed methane, shale gas, and tight gas. In this study, the volumetric strain of rocks is considered to be one of the most… read more here.
Keywords: evolution; gas; permeability; loading unloading ... See more keywords
Biomechanical Study on the Convenience of Loading and Unloading Laundry in Clothes Dryer
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Precision Engineering and Manufacturing"
DOI: 10.1007/s12541-018-0107-y
Abstract: Recently, household appliance designs have been emphasizing ergonomics and reducing the risk of musculoskeletal disorders for users. When laundry is taken out of a washing machine and put into a clothes dryer with the inlet… read more here.
Keywords: study convenience; unloading laundry; biomechanical study; clothes dryer ... See more keywords
The Loading–Unloading Model of Contact Between Fractal Rough Surfaces
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Precision Engineering and Manufacturing"
DOI: 10.1007/s12541-020-00330-y
Abstract: A loading–unloading elastic–plastic model of contact between three dimensional fractal rough surfaces has been presented in this paper. During loading process, the mechanical properties of a single asperity follow Hertzian theory. During unloading process, the… read more here.
Keywords: fractal rough; loading unloading; contact; model contact ... See more keywords