Effects of boundary conditions and partial drainage on cyclic simple shear test results—a numerical study

2004 ◽  
Vol 28 (10) ◽  
pp. 1057-1082 ◽  
Author(s):  
Bin Wang ◽  
Radu Popescu ◽  
Jean H. Prevost
Keyword(s):  
Boundary Conditions ◽  
Simple Shear ◽  
Shear Test ◽  
Numerical Study ◽  
Test Results ◽  
Simple Shear Test

scholarly journals THE NEXT-GENERATION CONSTITUTIVE CORRELATIONS FOR SIMULATION OF CYCLIC STRESS-STRAIN BEHAVIOUR OF SAND

2014 ◽  
Vol 21 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Habib Shahnazari ◽  
Yasser Dehnavi ◽  
Amir H. Alavi
Keyword(s):  
Simple Shear ◽  
Shear Test ◽  
Damping Ratio ◽  
Maximum Shear Stress ◽  
Algorithm Analysis ◽  
Good Prediction ◽  
Test Results ◽  
Stress Strain ◽  
Simple Shear Test ◽  
Strain Behaviour

This paper presents an innovate approach to simulate the stress-strain behaviour of sands subjected to large amplitude regular cyclic loading. New prediction correlations were derived for damping ratio (D) and shear modulus (G) of sand utilizing linear genetic programming (LGP) methodology. The correlations were developed using several cyclic torsional simple shear test results. In order to formulate D and G, new equations were developed to simulate hysteresis strain–stress curves and maximum shear stress (τmax) at different loading cycles. A genetic algorithm analysis was per­formed to optimize the parameters of the proposed formulation for stress-strain relationship. A total of 746 records were extracted from the simple shear test results to develop the τmax predictive model. Sensitivity and parametric analyses were conducted to verify the results. To investigate the applicability of the models, they were employed to simulate the stress-strain curves of portions of test results that were not included in the analysis. The LGP method precisely charac­terizes the complex hysteresis behaviour of sandy soils resulting in a very good prediction performance. The proposed design equations may be used by designers as efficient tools to determine D and G, specifically when laboratory testing is not possible.

Stress Conditions in NGI Simple Shear Test

1972 ◽  
Vol 98 (1) ◽  
pp. 155-160
Author(s):  
A. Stanley Lucks ◽  
John T. Christian ◽  
Gregg E. Brandow ◽  
Kaare Höeg
Keyword(s):  
Simple Shear ◽  
Shear Test ◽  
Stress Conditions ◽  
Simple Shear Test

scholarly journals Non-coaxiality of sand under bi-directional shear loading

2018 ◽  
Vol 5 (5) ◽  
pp. 172076 ◽  
Author(s):  
Yao Li ◽  
Yunming Yang
Keyword(s):  
Shear Stress ◽  
Strain Rate ◽  
Simple Shear ◽  
Shear Test ◽  
Shear Loading ◽  
Shear Behaviour ◽  
Shear Stresses ◽  
Simple Shear Test ◽  
Principal Axes ◽  
Angle Difference

This study aims to investigate the effect of consolidation shear stress magnitude on the shear behaviour and non-coaxiality of soils. In previous drained bi-directional simple shear test on Leighton Buzzard sand, it is showed that the level of non-coaxiality, which is indicated by the angle difference between the principal axes of stresses and the corresponding principal axes of strain rate tensors, is increased by increasing angle difference between the direction of consolidation shear stress and secondary shearing. This paper further investigated the relation and includes results with higher consolidation shear stresses. Results agree with the previous relation, and further showed that increasing consolidation shear stresses decreased the level of non-coaxiality in tests with angle difference between 0° and 90°, and increased the level of non-coaxiality in tests with angle difference between 90° and 180°.

Sign in / Sign up

Export Citation Format

Share Document