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is analyzed from the monotonic shearing tests. Obvious pore pressure is induced by the principal stress rotation alone even with shear stress q0=5 kPa. Strain components also accumulate with increasing the number of cycles and increases suddenly at the onset of failure. The deviatoric shear strain of 7.5% can be taken as the failure criterion for clay subjected to the pure cyclic principal stress......
on the sliding and climbing of dislocations, thus we propose a limiting strain energy strength theory (LSEST). Equivalent stresses of the LSEST under various principal stress states are evaluated...; (2) Maximum principal strain theory (Saint-Venant)[4] assumes that failure occurs......
are the vertical and horizontal strains, respectively; ε1 and ε3 are the major and minor principal strains, respectively. The effects of strain rate on the overall stress-strain behavior are negligible. (2...J. Cent. South Univ. Technol. (2009) 16: 0658-0662 DOI: 10.1007/s11771-009-0109-0 Strain rate effects on sand and its quantitative analysis LI Fu-lin(李福林)1, 2, PENG Fang-le(彭芳乐)1, 2, LI Jian......
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initiation and evolution from porosity and shear rate are visualized by contour lines in different shear strains.Key words:hollow cylinder apparatus; numerical modeling; principal stress rotation; strain... numerical torsion shear test is presented on hollow cylinder specimen which is performed on a spherical assemblage with fixed principal stress axes using the discrete element code PFC3D. Stack wall......
Dynamic strength characteristics and failure criteria of anisotropically consolidated silt under principal stress rotationSHEN Yang(沈扬)1, ZHANG Peng-ju(张朋举)1,2, XU Guo-jian(徐国建)1, LIU Han-long(刘汉龙)1...)Abstract:In order to identify the critical properties and failure criteria of in-situ silt under vehicle or wave loading, anisotropically consolidated silt under undrained cyclic principal stress rotation......
intermediate principal stress before the unloading, more elastic strain energy was accumulated in the specimen, and the cumulative AE energy was higher in the rockburst-induced failure, i.e., more... principal stress. Figure 7 shows the variation in the cumulative elastic strain energy density with the intermediate principal stress based on Eq. (2). As can be seen from Figure 7, when σ1 and σ3......
is shown in Fig.1(a), and its simplification is shown in Fig.1(b). In Fig.1, ε1 is the major principal strain; σ1 and σ3 are the major principal stress and the minor principal stress, respectively... principal strain, and then reaches the residual strength after the peak value, as shown in Fig.1(b). Simultaneously, the compressive strain is assigned a positive and the tensile strain a negative......
interlayer approached the vertical and the effect of the intermediate principal stress is taken into account.Key words:soft rock; strength; strain-softening; complex stress state; effect of intermediate...Effect of intermediate principal stress on strength of soft rock under complex stress statesMA Zong-yuan(马宗源)1, LIAO Hong-jian(廖红建)2, DANG Fa-ning(党发宁)1(1. School of Civil Engineering......
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