3축 제어 동적 단순전단 시험기(3축 진동시험기)

 

3축 제어 동적 단순전단 시험기

Variable Direction Dynamic Cyclic Simple Shear (VDDCSS)

 

영신컨설턴트 (02) 529 8803 2015.1

 

용도

바람의 방향이 변하는 풍력 기초나 구조물에서 3(xyz)으로 변하는 진동하중이 가해질 때

3( xy: 바람방향 z:수위 변화)축 동적제어가 가능한 단순전단시험기로 기초 지반해석에 적용

 

 

 

xyz축 따른 진동시험기

 

 

3 (xyz) 축 진동제어 단순전단시험기 (VDDCSS)

 

 

xyz축 진동 단순전단시험기 Variable Direction Cyclic Simple Shear (VDDCSS)

 

2축 단순전단시험기의 수평축에 90도 방향으로 y축 진동이 추가되어 독립적이거나 다른 하중에 따라 제어되어 회전하는 vector에 따라 시험한다.

 

특징	장점
Test control:	Test control allows specification of amplitude of horizontal load / displacement as well as direction.
Teflon coated rings:	K-zero conditions ensured by use of 1mm high, low-friction, teflon coated rings.
Control & Acquisition software can also define test stages at different shear stress:	Angles relative to zero e.g. 0, 10, 20, 30 etc. Definition of waveform by datum/ common point, amplitude, controlling parameter and frequency.
Independent axis control:	Each axis can be load or displacement controlled.

 

사양

Actuators:	3 x electro-mechanical, high accuracy, encoder controlled actuators
Axial Force Accuracy:	Typically <0.1%
Axial Load (kN):	5
Displacement Range:	Shear axis +/- 10mm (+/-30% shear strain) Normal axis +/- 25mm (+80% consolidation strain)
Displacement Resolution:	0.3μm
Load Range (kN):	5 normal force, 2 on each shear measurement (y and z)
Operating Frequency (Hz):	1
Sample Size (mm):	50 diameter specimen, height 20 to 30 (other sizes on request)

 

 

 

 

 

1. 측정제어 Cyclic XY test with no angular change (constant angle)

 

 

Cyclic XY Combined Displacement, controlling via the actuator encoders.

Frequency of 1 Hz selected under the Axial Axis heading

10 load cycles, Datum = 0.5 mm, Amplitude = 0.1 mm Phase Offset = 0 degrees.

Start Angle = 45 degrees Angular Frequency = 0 Hz.

Angular Change = 0 degrees (i.e., constant angle).

Origin x = 0 mm Origin y = 0 mm.

 

 

frequency of 1 Hz, the Datum of 0.5 mm ± 0.1 mm.

the Axial Displacement 1 Hz, Datum of 0 mm, ± 0.2 mm.

 

 

2. 측정제어 Cyclic XY test with cyclic angular change 30도

 

 

 

Cyclic XY Combined Displacement, controlling via the actuator encoders.

Frequency of 1 Hz under the Axial Axis heading

10 load cycles Datum = 0.5 mm Amplitude = 0.1mm. Phase Offset = 0 degrees.

Start Angle = 45 degrees Angular Frequency = 0.1 Hz.

Angular Change = 30 degrees. Origin x = 0 mm. Origin y = 0 mm

 

 

The frequency of 1 Hz Datum of 0.5 mm ± 0.1 mm.

The frequency of 0.1 Hz Start Angle of 45 degrees ± 30 degrees.

Axial Displacement 1 Hz Datum of 0 mm, ± 0.2 mm.

 

 

3. 측정제어 Cyclic XY test with cyclic angular change 10도

 

 

xyz축 제어조건 z 수직 진동 : 1 Hz 진폭 0.1 mm x y 수평진동 : 1 Hz angle change 10도

 

 

xy 방향 진동시 x y 방향 2개의 변위