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GDS DCSS
 
What is it?
 
A cylindrical soil specimen is laterally confined by Teflon coated low friction retaining rings, ensuring a constant cross sectional area. A shear force loading is then applied. Vertical displacement may be prevented, therefore constant volume conditions are enforced (i.e Simple Shear). The GDS Combined Dynamic Cyclic Simple Shear (DCSS) apparatus is a preferred device for research into dynamic soil behaviour because of its simplicity and its ability to model many types of field loading conditions that are difficult to achieve with other laboratory equipment.
 
Dynamic cyclic simple shear system
  Download full specification datasheet as pdf [379kb]
 
 
 
What are its uses
 
The DCSS apparatus allows for a smooth and continuous rotation through 90 degrees of the principal stress directions. The ability to simulate principle stress rotation is common to many geotechnical problems, including earthquake loading. The simple shear device allows direct investigation of the shear stress v. shear strain in drained and undrained situations. In addition, the dynamic cyclic capability allows investigation of damping ratio and liquefaction.
 
 
GDS Instruments is an ISO 9001:2000 credited company.