Failure Mechanism and Mechanical Characteristics of Rockmass Containing Close Intermittent Joints under Plane Stress Condition

2007 ◽  
Vol 353-358 ◽  
pp. 1173-1176 ◽  
Author(s):  
Wei Zhong Ren ◽  
Hao Chen ◽  
Yong Gang Wang ◽  
Feng Chen

Biaxial compression model tests on rockmass containing intermittent joints under plane stress condition were carried out in this study, where the laser speckle photo technique was used for measuring the displacement field. The results obtained have indicated that the laser speckle method was effective and the measuring value was about 14% less than the measuring value of dial gauges. Based on the displacement field and the principal stress field which were measured by laser speckle photo technique, dial gauges and strain gauges, the angle of wing incipient crack, the evolution of stress field at the joint tip and the path of crack extension were deeply studied. The deformation and failure characteristics, including the fracture mechanism of rockmass, were also analyzed in this study.

Author(s):  
Thomas Paris ◽  
Khémaïs Saanouni

This paper deals with the numerical treatment of "advanced" elasto-viscoplasticdamage constitutive equations in the particular case of plane stress. The viscoplastic constitutive equations account for the mixed isotropic and kinematic non linear hardening and are fully coupled with the isotropic ductile damage. The viscous effect is indifferently described by a power function (Norton type) or an hyperbolic sine function. Different time integration schemes are used and compared to each other assuming plane stress condition, widely used when dealing with shell structures as well as to the 3D reference case.


1980 ◽  
Vol 12 (1) ◽  
pp. 89-93
Author(s):  
A. A. Lebedev ◽  
F. F. Giginyak ◽  
V. V. Bashta ◽  
V. K. Kharchenko ◽  
V. N. Semirog-Orlik ◽  
...  

Meccanica ◽  
2016 ◽  
Vol 51 (9) ◽  
pp. 2225-2233 ◽  
Author(s):  
W. F. Chen ◽  
B. Peng ◽  
F. H. Wang ◽  
M. L. Feng

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