LESS Home Projects Facilities Members Links News Dr. Shao Homepage Schematic Diagram of LESS Facility Shake Table     (Top)  Table size:                                3 ft. x 3 ft. x 2 in. aluminum plate  Maximum specimen mass:        500 lbf (228 Kg)  Frequency of operation:            0~20 Hz  Maximum specimen mass:         4g (with 500lbf specimen)  Displacement:                           +/- 3in.  Supporting frame:                     3 ft. x 4 ft. x 1 in. steel plates (x2) NI-Controller and Data Acquisition     (Top) PXI 1050 Chassis                8-Slot 3U PXI Chassis    Integrated SCXI Chassis: 4 Signal Conditioning Module Slots     PXI 8108 Controller     2.53 GHz Dual Core Embedded Controller PXI Modules     PXI-6229:  16-Bit, 32 AI, 48 DIO, Multifunction M Series DAQ    PXI-6221:  16-Bit, 16 AI, 24 DIO, Multifunction M Series DAQ SCB-68 (x3)    68-Pin Shielded Desktop Connector Block Hydraulic Power Supply     (Top) Servo Quality 10 Gpm Model No. 110.11S   20 Horsepower TEFC Motor   380-480 V, 3 phase, 50/60 Hz power   Local and remote control, 24 VDC control voltage   High/low pressure controls Hydraulic Linear Actuators     (Top) Shore Western Model 910D-1.08-6(0)-4-1348   Force:                               +/- 3,240 lbs at 3000 psi   Stroke:                             6 inch, +/- 3 inch, plus +/- 0.5 inch cushions   Swivel base and end rod:  +/- 90 degree swivel, +/- 7 degree tilt              Servo valve:                     10 Gpm at 1000 psi   Load Cell:                         2.5 kip fatigue rated 300% overload capacity Hydraulic Control System     (Top) Shore Western SC6000 Control System   2 channel, desktop enclosure   2.13 GHz Processor Linear Variable Differential Transducer     (Top) Schaevitz Sensors DC-EC 5000  (x1)   Input voltage:             +/- 15 V DC   Linear range:              +/- 5 in   Frequency response:  200 Hz Linear Power Supply (x`)   Input Voltage Range:   115 V AC or 230 V AC     Accelerometers     (Top) (Wired ) Crossbow Technology CXL04GP3 (x3)     Input range:              +/- 4g    Measurement:           x-/y-/z-axes (3-axis)    Size:                         0.95” x 2” x 1.2”    Weight:                    1.62 oz Wireless Accelerometer Network Set (x3)    IIB2400 interface board         Size:                    1.9" x 1.4" x 0.6"    IPR2400 Intel Mote 2 (Imote2) processor/radio board with external antennae         Size:                   1.4" x 1.9" x 0.35"    Structural Health Monitoring Accelerometer (SHM-A) sensor board    IBB2400CA battery board with on/off switch          Input Range: +/- 2g          3-axis Measurement     Operation software: ISHMP Services Toolsuite, version 3.0.0 developed  by                                        Illinois Structural Health Monitoring Project (ISHMP) Structure Specimen     (Top) Three story shear-type building specimen   Number of stories:        3   Story height:                 12"   Structure height:            41 1/2"   Column cross section:   1/8" x 1 1/4"   Story weight:                12.6 lbf   Structure weight:           37.7 lbf   Story Stiffness:              0.164 kip/in   Natural frequencies:      5.04Hz,  14.10Hz, 20.30Hz Substructure Specimen     (Top) Cantilever Column with Idealized Plastic Hinge Connection   Section: HSS 3"x1.5"x1/8"   Length: 3'   Base plate: 5"x12" steel plate with 1/2" thickness   The plastic hinge emulates nonlinear behavior and can be easily replaced after   yielding without permanent damage to the specimen.                                 Acknowledgment : The LESS would like to thank Heather Schmitt, Johnathan Holtz, Justin Poel for their hardworking in building the shake table and the reaction frame.

Western Michigan University ---- Department of Civil and Construction Engineering Laboratory of Earthquake and Structural Simulation --- Last Updated: 05-09-2012