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for the civil engineering industry

Building better technology
for the civil engineering industry

Tel: +44 (0)118 945 3737

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Dynamic Simple Shear with Confining Pressure System


Dynamic Simple Shear with Confining Pressure System

For prices: call +44 (0)118 945 3737 or Email us
The VJ Tech Dynamic Simple Shear Apparatus with Confining Pressure (DSS-C) features;

  • 2 Electro-Mechanical dynamic actuators for Horizontal and Vertical Dynamic Loading
  • Frequency up to 5 Hz and Dynamic Load +/- 5 kN (both upgradeable)
  • The Electro-Mechanical dynamic actuators are controlled by a Dynamic Servo Controllers which also measure Transducer data
  • Sample either held under Pressure in an adapted Triaxial type Cell with;
    • Back Pressure controlled and measured using a Hydraulic APC and Cell Presssure using an Air APC with an Air/Water interface OR
    • Contained within Confining Rings and no Confining Pressure

The following tests can be performed

  • Saturation, Consolidation and Static Load Control
  • Saturation, Consolidation and Dynamic (Cyclic) Shear Control
  • Saturation, Consolidation and Liquefaction

Dynamic Simple Shear with Confining Pressure System

System Setup

  • Dynamic Simple Shear with Confining Pressure Apparatus
  • Dynamic Servo Controller (Dual Axis)
  • Pneumatic Automatic Pressure Controller (Up to 1000 kPa (145 psi))
  • Hydraulic Automatic Pressure Controller (Up to 1000 kPa (145 psi))
  • Air/Water Bladder
  • Transducers (Vertical Load (Internal 5 kN (1124 lbf) Dynamic Load Cell), Horizontal Load (Internal 5 kN (1134 lbf) Dynamic Load Cell), Vertical and Horizontal Displacement (25 mm  (1 inch) LSCT), Pore Water Pressure (10 bar (145 psi))

Features:

  • Ethernet or USB PC Connection
  • Horizontal Force Actuator (consisting of a Servo Motor and Limit Switches)
  • Vertical Force Actuator (consisting of a Servo Motor and Limit Switches)
  • Confining Cell for sample with internal Load Cells (note Cell is capable of 2 MPa (290 psi) Pressure)
  • Axial and Shear stress-strain control
  • Accurate encoder control of axial and shear displacement
  • Sample Assembly Kits available:
  •    Skirted Base Pedestal and Top Cap (70 mm (2.75 inch) or 100 mm 4 inch) diameter sample size)
  •    Confining Ring Base Pedestal and Top Cap 70 mm diameter sample size
  • The following tests can be performed
    • Saturation, Consolidation and Static Load Control
    • Saturation, Consolidation and Dynamic (Cyclic) Shear Control
    • Saturation, Consolidation and Liquefaction

Detailed product specifications

Max. Frequency     
5.0000 Hz (upgradeable to 10 Hz) 
Min, Frequency
0.0001 Hz
Max. Dynamic Load       
+/- 5 kN (upgradeable to 10 kN) 
Max. Confining Pressure  
Up to 2000 kPa 
Max. Back Pressure   Up to 2000 kPa
Sample Diameter  70 mm (or 100 mm on request) 
Nominal Sample Height  26 mm (or 38 mm for 100 mm) 
PC Interface  USB or Ethernet 

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