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for the civil engineering industry

Building better technology
for the civil engineering industry

Tel: +44 (0)118 945 3737

Tel: +44 (0)118 945 3737

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Dynamic (Cyclic) Simple Shear with Confining Pressure System


The VJ Tech Dynamic Simple Shear Apparatus with Confining Pressure (DSS-C) utilises 2 electro mechanical dynamic actuators for applying the vertical and horizontal loads to the sample which is held under Pressure in an adapted Triaxial type Cell or within Confining Rings and no Confining Pressure. The 2 electro mechanical dynamic actuators are controlled by the Dual Axis Dynamic Servo Controller (DSC3000MM) which is connected via Ethernet or USB to a PC. The vertical and horizontal displacements are measured with either LSCT Transducers or Encoders which are part of the servo motors and the maximum range of travel in each axis is protected by a limit switch. Back Pressure is controlled and measured using a Hydraulic APC and Cell Presssure using an Air APC with an Air/Water interface. Vertical and Horizontal Loads are measure by internal Load Cells. The Clisp Studio csDYNSS-C software enables all stages of the the test to be controlled and monitored and results output
Part Number : VJT9411
For prices: call +44 (0)118 945 3737 or Email us

Dynamic (Cyclic) Simple Shear with Confining Pressure System

System Setup

  • Dynamic (Cyclic) Simple Shear with Confining Pressure Apparatus
  • Dynamic Servo Controller (Dual Axis)
  • Pneumatic Automatic Pressure Controller (Up to 2000 kPa (290 psi))
  • Hydraulic Automatic Pressure Controller (Up to 2000 kPa (290 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 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 testscan be performed
    • Saturation, Consolidation and Static Load Control
    • Saturation, Consolidation and Dynamic (Cyclic) Shear Control
    • Saturation, Consolidation and Liquefaction

Detailed product specifications

Maximum Frequency  5 Hz (upgradeable to 10 Hz) 
Maximum Dynamic Load  +/- 5 kN (1124 lbf) (upgradeable to 10 kN (2248 lbf)) 
Maximum Horizontal Travel
+/- 20 mm (0.79 inch)
Maximum Vertical Travel  +/- 15 mm (0.59 inch)
Maximum Confining Pressure       
Up to 2000 kPa (290 psi)
Maximum Back Pressure  Up to 2000 kPa (290 psi)
Sample Diameter  70 mm (2.75 inch) (or 100 mm (4 inch) on request) 
Nominal Sample Height 28 mm (1.1 inch) (or 40 mm (1.58 inch) for 100 mm (4 inch) sample)
PC Interface  Ethernet 

Product Documentation

Dynamic Simple Shear with Confining Pressure Datasheet
Download
Automatic Pressure Controllers datasheet
Download
Transducers Datasheet
Download
Air Water Distribution Datasheet
Download

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