Product Details

Cyclic Simple Shear


General Description


The system consists of a simple shear load frame air receiver with vertical and horizontal loading control valves.

It incorporates a control and data acquisition system as described below, with two 5 kN actuators.

Each actuator has an internal displacement transducer, which relays the actuator piston position back to the computer.

The system is identical to that one which is part of the cyclic triaxial system, except for the input channels, which are 6 instead of 13. The cyclic simple shear is a plane strain device.

The shear strain is induced by horizontal displacement at the bottom of the sample relative to the top.

The horizontal diameter of the sample remains constant; therefore any change in volume shall be as a result of vertical movement of the top platen.

The system is designed to allow a sample to be consolidated, drained and then sheared.

Pore pressure measurement is possible thus allowing equilibrium to be achieved prior to shearing.




• Frequency up to 70 Hz
• Plane strain measurement
• Shear at a constant height
• Shear at a constant stress
• Shear at a constant rate of strain




• Main frame: floor mounted, steel box frame including integral double acting horizontal and vertical pneumatic actuators. Each with an internal displacement transducer. The top cap is fixed and the pedestal is mounted on roller bearings
• Sample size: 70 mm dia. (50 mm with conversion kit)
• Maximum load: ± 5 kN vertical and horizontal
• Frequency range: 0 - 70 Hz
• Overall dimensions: 1500x1200x700 mm (HxLxW)
• Electrical specification: 230 or 110 V, 50-60 Hz, 1 ph.
• Weight approx.: 350 kg


Order Information


• 31-WF7500 Cyclic Simple Shears System. 110-230 V, 50-60 Hz, 1 ph.

• Conversion kit for 50 mm dia. samples
• 31-WF7500/1 50 mm dia. sample accessories including pedestal and top cap

*Please consult for correct quotation with accessories


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Cyclic Simple Shear

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