scholarly journals Deformation Characteristics of a Compacted Clay in Collapse Under Isotropic Stress State and Its Shear Deformation after Collapse.

1998 ◽  
pp. 271-281 ◽  
Author(s):  
Shoji Kato
Keyword(s):  
Stress State ◽  
Shear Deformation ◽  
Deformation Characteristics ◽  
Compacted Clay

Shear deformation characteristics and defect evolution of the biaxial ±45° and 0/90° glass non-crimp fabrics

2020 ◽  
Vol 193 ◽  
pp. 108137 ◽  
Author(s):  
Ming Mei ◽  
Yujia He ◽  
Xujing Yang ◽  
Kai Wei ◽  
Zhaoliang Qu ◽  
...  
Keyword(s):  
Shear Deformation ◽  
Deformation Characteristics ◽  
Defect Evolution

scholarly journals Investigation of the influence of the railroad track on the stress state of the tunnel lining

2018 ◽  
Vol 239 ◽  
pp. 01020
Author(s):  
Mikhail Pleshko ◽  
Alexei Revyakin ◽  
Natalia Malishevskaya
Keyword(s):  
Stress State ◽  
Numerical Model ◽  
Stress Distribution ◽  
Elastic Layer ◽  
Tunnel Lining ◽  
Railway Track ◽  
Deformation Characteristics ◽  
Railroad Track ◽  
Circular Tunnel ◽  
Moving Vehicles

Tunnel lining takes significant loads from moving vehicles. The consequences of their impact depend on the design of the railway track and the deformation characteristics of its elements. For their study, a numerical model of a circular tunnel has been developed. As a result of the model calculation, the values of the main vertical stresses in the main tunnel structures were obtained. It is established that with increasing loads from the wheel to the rail from 100 to 200 kN, the voltage on average increases by 50%. The stress distribution is affected by the rigidity of the elastic layer. When it increases, the vertical stresses in the sub-rail support decrease nonlinearly, while in traveling concrete they increase nonlinearly.

scholarly journals Triaxial Testing to Determine the Effect of Soil Type and Organic Carbon Content on Soil Consolidation and Shear Deformation Characteristics

2014 ◽  
Vol 78 (4) ◽  
pp. 1192-1200 ◽  
Author(s):  
Debashis Chakraborty ◽  
Christopher W. Watts ◽  
David S. Powlson ◽  
Andrew J. Macdonald ◽  
Rhys W. Ashton ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
Shear Deformation ◽  
Soil Type ◽  
Triaxial Testing ◽  
Organic Carbon Content ◽  
Deformation Characteristics ◽  
Soil Consolidation

scholarly journals Deformation Characteristics of the Shear Zone and Movement of Block Stones in Soil–Rock Mixtures Based on Large-Sized Shear Test

2020 ◽  
Vol 10 (18) ◽  
pp. 6475
Author(s):  
Zhiqing Li ◽  
Feng Hu ◽  
Shengwen Qi ◽  
Ruilin Hu ◽  
Yingxin Zhou ◽  
...  
Keyword(s):  
Shear Deformation ◽  
Shear Zone ◽  
Failure Mode ◽  
Deformation Pattern ◽  
Deformation Characteristics ◽  
Shear Surface ◽  
Field Samples ◽  
Deformation Properties ◽  
Shear Process ◽  
Zone Deformation

Soil–rock mixtures (SRM) have the characteristics of distinct heterogeneity and an obvious structural effect, which make their physical and mechanical properties very complex. This study aimed to investigate the deformation properties and failure mode of the shear zone as well as the movement of block stones in SRM experimentally, not only considering SRM shear strength. The particle composition and proportion of specimens were based on field samples from an SRM slope along national highway 318 in Xigaze, Tibet. Shear zone deformation tests were carried out using an SRM-1000 large-sized geotechnical apparatus controlled by a motor servo, considering the effects of different stone contents by mass (0, 30%, 50%, 70%), vertical pressures (50, 100, 200, 300, and 400 kPa), and block stone sizes (9.5–19.0, 19.0–31.5, and 31.5–53.0 mm). The characteristics of the shear zone deformation and block stone interactions were monitored by placing aluminum wires and dry ash in holes in the specimens. The results showed that the stone content 30% and 70% were two critical thresholds to determine the deformation characteristics of SRM. Under the conditions of high stone content and large particle size, the stones throughout the shear surface tended to extrude and roll during the shear process. The block stones around the shear surface were mainly affected by dilatancy and exhibited extrusion, particle breakage, and redistribution. The deformation pattern could be considered as be analogous to push-type shear deformation from the back to front or composite shear deformation from the front and back to the middle of the slope. It is of great importance to study the shear characteristics and deformation evolution of SRM to understand the progressive shear process of the sliding zone and the failure mode of landslides.

The Influence of Stress-State and Inclusion Content on Ductile Fracture With Rotation

1967 ◽  
Vol 89 (3) ◽  
pp. 533-540 ◽  
Author(s):  
V. A. Tipnis ◽  
N. H. Cook
Keyword(s):  
Stress State ◽  
Ductile Fracture ◽  
Normal Stress ◽  
Shear Deformation ◽  
Fracture Strain ◽  
Normal Stresses ◽  
Inclusion Content ◽  
The Mean ◽  
Metal Processing ◽  
Tubular Specimens

A study of flow and fracture under combined shear and normal stresses in deformation regions with rotations was undertaken using tubular specimens. The results of the microscopic study for the four resulfurized steels tested show that rotations play an important role in ductile fracture at inclusions even when the mean normal stress is compressive. Two mechanisms for ductile fracture with rotation are proposed. On the gross scale a relationship is found between the fracture strain and the stress state for a given inclusion content. Also, a strong inverse dependence of fracture strain on inclusion content is obtained. These results appear useful to determine limiting shear deformation in metal processing operations.

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