scholarly journals A three-dimensional soil–water coupled FE analysis of hollow cylinder test concerning non-uniform deformation

2013 ◽  
Vol 53 (6) ◽  
pp. 923-936 ◽  
Author(s):  
Binbin Xu ◽  
Kentaro Nakai ◽  
Toshihiro Noda ◽  
Toshihiro Takaine
Keyword(s):  
Soil Water ◽  
Hollow Cylinder ◽  
Three Dimensional ◽  
Fe Analysis ◽  
Uniform Deformation ◽  
Cylinder Test ◽  
Hollow Cylinder Test

Finite Element Analysis of Hollow Cylinder Test Considering Variation of Wall Thickness

2014 ◽  
Vol 1065-1069 ◽  
pp. 317-320
Author(s):  
Bin Bin Xu ◽  
Toshihiro Noda ◽  
Kentaro Nakai
Keyword(s):  
Hollow Cylinder ◽  
Wall Thickness ◽  
Three Dimensional ◽  
Deformation Analysis ◽  
Cylinder Wall ◽  
Element Analysis ◽  
Uniform Deformation ◽  
Cylinder Test ◽  
Hollow Cylinder Test ◽  
Dimensional Element

Hollow cylinder torsional shear test is simulated regarded as a boundary value problem employing a three-dimensional static/dynamic soil-water coupled finite deformation analysis to investigate the influence of the specimen geometries on apparent behavior concerned in practical experiments. 1) A “Perfect path” which means the response of a single three-dimensional element with uniform deformation is calculated to investigate the effect of non-uniformities on the apparent behavior. As can be seen, only the apparent behavior with thinnest wall thickness coincides with the “Perfect path”, which indicates a uniform deformation inside the thinnest specimen; 2) It was found that when the cylinder wall thickness became smaller, the non-uniformity also decreased correspondingly, which can also be seen in the element behaviors of the thickest specimen; 3) Even thought the non-uniformity in different geometries is quite different, there seem to be no significant influence on the apparent behavior. The reason may lie in the extreme constraint conditions, namely displacement control.

Realization of Uniform Deformation under Three-Dimensional Condition Based on Soil-Water Coupled Analysis Considering Inertia Forces

2014 ◽  
Vol 638-640 ◽  
pp. 530-533
Author(s):  
Bin Bin Xu ◽  
Toshihiro Noda ◽  
Kentaro Nakai
Keyword(s):  
Soil Water ◽  
Three Dimensional ◽  
Coupled Analysis ◽  
Deformation Analysis ◽  
Localized Deformation ◽  
Uniform Deformation ◽  
Soil Skeleton ◽  
Theoretical Considerations ◽  
Inertia Forces ◽  
Dimensional Condition

In the paper, based on soil-water coupled finite deformation analysis, theoretical considerations and numerical calculations were carried out under undrained three-dimensional condition in order to reproduce a uniform deformation field. At first, a theoretical consideration was assumed to realize a uniform deformation for a saturated soil, according to which the initial velocity and acceleration in both vertical and circumferential directions should be applied to each node to remove the influence of inertia effect. This first theoretical analysis is useful and can guide the numerical calculation. Next, the paper realized a uniform deformation of a three-dimensional cylinder specimen under undrained boundary conditions using the soil-water coupled analysis in which the SYS Cam-clay model is employed as the constitutive model for soil skeleton. The numerical results show that without the inertia forces there is no localized deformation in the specimen.

Use of Modified Hollow Cylinder Test in Laboratory for Simulation of Downhole Drilling Condition in Shale

2010 ◽  
Author(s):  
Glenn Kaare Gabrielsen ◽  
Jorn F. Stenebraten ◽  
Olav-magnar Nes ◽  
Rune M. Holt ◽  
Per Horsrud
Keyword(s):  
Hollow Cylinder ◽  
Cylinder Test ◽  
Drilling Condition ◽  
Hollow Cylinder Test

Mechanical behavior of Tien-Liao mudstone in hollow cylinder tests

2002 ◽  
Vol 39 (3) ◽  
pp. 744-756 ◽  
Author(s):  
Der-Her Lee ◽  
C Hsein Juang ◽  
Hung-Ming Lin ◽  
Shing-Hung Yeh
Keyword(s):  
Hollow Cylinder ◽  
Yield Surface ◽  
Soft Rock ◽  
Stress Path ◽  
Experimental Results ◽  
Testing System ◽  
Yield Criteria ◽  
Cylinder Test ◽  
Hollow Cylinder Test ◽  
Coulomb Criterion

A series of hollow cylinder tests were conducted to study the stress–strain characteristics and the yield surface of Tein-Liao mudstone, a soft rock widely distributed in southwestern Taiwan. These tests were carried out under different stress paths designed to utilize the versatility of the hollow cylinder testing system. The test results were used to establish the yield surface of the mudstone in the principal stress space. The experimental results were used to examine the accuracy of existing yield criteria, such as the Coulomb criterion, the extended Hoek-Brown model, and the Kim-Lade model. Among the three yield criteria examined, the Kim-Lade model provided the best agreement with the experimental results, although both the extended Hoek-Brown model and the Kim-Lade model are adequate for modeling the yield surface of the mudstone.Key words: rock, yield surface, stress path, hollow cylinder test.

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