GDS Standard Simple Shear System (STDSS) 정적단순전단시험 직접전단시험

 

 

 

GDS Standard Simple Shear System (STDSS)

정적단순전단시험 직접전단시험

 

 

영신컨설턴트 (02) 529 8803 2012.5

 

 

ASTM D6528 Actuator System: Electro-mechanical 전자 기계 Available Load ranges: Axial Load: 5kN 수직력                               Shear Load: 5kN 전단력 Software Fully automated Control Parameters: 자동제어 Axial Load/ Displacement 연직 하중 변위 제어 Shear Load/Displacement 전단하중 변위 제어 Active Height Control 높이 조절    Available options 10kN Upgrade Option: Can be upgraded to Direct Shear

 

 

A cylindrical soil specimen is laterally confined by Teflon impregnated low friction retaining rings, ensuring a constant cross sectional area. 마찰력이 작은 링으로 수평변형 구속

 

Axial and shear loads (or displacements) are provided by proven GDS electro-mechanical force actuators. Axial and shear load readings are controlled under closed-loop feedback. Topcap fixity is assured through a system of crossed roller linear guides to minimise topcap rocking during shearing.

 

The STDSS is a benchtop unit with a very small foot print of approximately 750mm x 200mm.

    

직접전단기

 

 

 

 

A shear force loading is then applied. Vertical displacement is prevented using active height control (via the axial force actuator), therefore constant volume conditions are enforced (i.e. Simple Shear). 수평하중이 작용할 때 연직변위 제어한다.

 

 

시료설치

 

Sample preparation and insertion into the system is made easy by using the included sample preparation and topcap support apparatus. This ensures that no load is applied to the sample during preparation and insertion. 시료의 설치

 

 

Technical Specifications 규격서

- Accurate electro-mechanical actuators 전자기계식 제어

- Available sample sizes (one size supplied with system) 시료크기 : - Φ50mm - Φ70mm

- Built in data logging for axial and shear loadcells

- Low friction sample slip rings 

- High quality, low friction linear guides used to ensure strength and alignment in normal and shear directions.

- Available control parameters 제어 : - Axial Load / Stress 연직하중 응력

- Axial Strain / displacement 연직 변형율 변위

- Shear Load / Stress 전단 하중 응력

- Shear Strain 전단변형율

- Available control modes for each control parameter 제어 : - Ramp (monotonic) 점증, Cycle (slow speed) 저속의 진동 and hold 유지

 

The STDSS uses the steps of the stepper motor to report axial and shear displacement. Additional accuracy can be achieved with the addition of an external GDS 16-bit Data logger and separate axial and shear displacement transducers for a more direct reading of the sample movement.