Numerical Simulation of Coir Geotextile Reinforced Soil Under Cyclic Loading

2021 ◽  
pp. 151-162
Author(s):  
Jayan S. Vinod ◽  
Abdullah Al-Rawabdeh ◽  
Ana Heitor ◽  
Beena K. Sarojiniamma
Keyword(s):  
Numerical Simulation ◽  
Cyclic Loading ◽  
Reinforced Soil

scholarly journals Numerical Simulation of Reinforced Soil Slope in Subgrade Widening of Expressway

2020 ◽  
Vol 565 ◽  
pp. 012105
Author(s):  
Song-jie Gao ◽  
Bin Tang ◽  
Jing Zhang ◽  
Gang Zhao
Keyword(s):  
Numerical Simulation ◽  
Reinforced Soil ◽  
Soil Slope

scholarly journals Acoustic Emission Simulation on Coal Specimen Subjected to Cyclic Loading

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Huiqiang Duan ◽  
Depeng Ma
Keyword(s):  
Numerical Simulation ◽  
Acoustic Emission ◽  
Cyclic Loading ◽  
Confining Pressure ◽  
Rock Masses ◽  
Coal Specimen ◽  
Cycle Number ◽  
Confining Pressures ◽  
Unloading Rate ◽  
Ae Counts

The damage and failure state of the loaded coal and rock masses is indirectly reflected by its acoustic emission (AE) characteristics. Therefore, it is of great significance to study the AE evolution of loaded coal and rock masses for the evaluation of damage degree and prediction of collapse. The paper mainly represents a numerical simulation investigation of the AE characteristics of coal specimen subjected to cyclic loading under three confining pressures, loading-unloading rates, and valley stresses. From the numerical simulation tests, the following conclusions can be drawn: (1) The final cycle number of coal specimen subjected to cyclic loading is significantly influenced by the confining pressure, followed the valley stress. With the increase in confining pressure or valley stress, the cycle number tends to increase. However, the loading-unloading rate has a little influence on it. (2) The AE counts of coal specimen subjected to cyclic loading are greatly influenced by the confining pressure and the valley stress. With the increase in the confining pressure, the cumulative AE counts at the 1st cycle tend to increase but decrease at a cycle before failure; with the decrease in the valley stress, the cumulative AE counts per cycle increase in the relatively quiet phase. However, the loading-unloading rate has a little influence on it. (3) The failure mode of coal specimen subjected to cyclic loading is significantly influenced by the confining pressure. Under the uniaxial stress state, there is an inclined main fractured plane in the coal specimen, under the confining pressures of 5 and 10 MPa, the coal specimen represents dispersion failure. The loading-unloading rate and valley stress have little influence on it. (4) The AE ratio is proposed, and its evolution can better reflect the different stages of coal specimen failure under cyclic loading. (5) The influence of confining pressure on the broken degree of coal specimen subjected to cyclic loading is analyzed, and the higher the confining pressure, the more broken the failed coal specimen.

scholarly journals NUMERICAL SIMULATION OF CYCLIC LOADING TESTS OF COMBINED COLUMNS WITH FRICTION DAMPING MECHANIZM

2014 ◽  
Vol 70 (4) ◽  
pp. I_101-I_108
Author(s):  
Hisakazu SAKAI ◽  
Sumio SAWADA ◽  
Yoshikazu TAKAHASHI ◽  
Akira IGARASHI ◽  
Kazumasa MANABE ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Cyclic Loading ◽  
Friction Damping ◽  
Loading Tests ◽  
Cyclic Loading Tests
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