a nees geotechnical centrifuge facility at davis
DESCRIPTION
A NEES Geotechnical Centrifuge Facility at Davis. http://cgm.engr.ucdavis.edu/NEES/nees.html. Components of project. Speed upgrade - to 80 g Advanced Instrumentation - subcontracts to develop 8-channel sensor managers and to investigate feasibility of wireless communication underground. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/1.jpg)
UC Davis1
A NEES Geotechnical
Centrifuge Facility at Davishttp://cgm.engr.ucdavis.edu/NEES/nees.html
![Page 2: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/2.jpg)
UC Davis2
Components of project• Speed upgrade - to 80 g• Advanced Instrumentation - subcontracts to develop 8-
channel sensor managers and to investigate feasibility of wireless communication underground.
• Robot - in flight testing, construction and inspection
• New building - 4200 ft2 of new space
• Shaker upgrades - biaxial shaker
• Geophysical testing
• Display wall/numerical simulation
![Page 3: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/3.jpg)
UC Davis3
UCD NEES Advisory Board
• Tarek Abdoun, Abbas Abghari, JP Bardet, Po Lam, Dave McCallen, Jack Moehle, Paul Van Laak
• First meeting September 13, 2001 – Three board members attended physically
– Two members attended by polycom
• Project status and other presentations from EAB meeting are posted at:– http://cgm.engr.ucdavis.edu/NEES/eab/eab.html
![Page 4: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/4.jpg)
UC Davis4
Questions for SI, CD, NSF
• NEESpop– Where does it fit in our LAN?– Who pays for it?– What are the specs?
• Clarification of responsibilities of– NSF, Equipment sites, SI, and CD
• Who is responsible to make sure that the SI system fits with the equipment sites and the whole NEES works together?
![Page 5: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/5.jpg)
UC Davis5
Question for Equipment Sites
• Can we share hardware and software design, development and maintenance costs?
– Data Acquisition Systems– LAN hardware and software– NEES Software (visualization, telepresence)– Expertise of people at certain sites may be helpful
to other sites
![Page 6: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/6.jpg)
UC Davis6
Solid model of UCD centrifuge
![Page 7: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/7.jpg)
UC Davis7
Streamline room
SPEED UPGRADE
New Bearings
New Gear Box
![Page 8: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/8.jpg)
UC Davis8
UC
D C
entr
ifuge
Rob
ot
![Page 9: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/9.jpg)
UC Davis9
Geophysical Methodsin the Centrifuge:
At GaTechMaterial property characterization. High resolution ELM Needle probeSemi-reflective multiple layers for GPR-based monitoringS-wave imaging
At UC-DavisELM Needle probe implementation in centrifuge modelsP-waves/ultrasound: validation with medical devicesDevelopment of internal ELM sourcesInitial implementation of resistivity tomography
![Page 10: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/10.jpg)
UC Davis10
Bia
xial
Sha
ker
ABAQUS analysis in progress
- safety issues
- performance
issues
NEESgrid support for analysis is appreciated.
![Page 11: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/11.jpg)
UC Davis11
sensor manager
sensor
•Process•buffer•transmit
SDI 1010x
+/- 200g
0 – 2500 Hz
data concentrator
RESDAQ PCWireless
transceiver Wired
data concentrator
custom communicationserial
communication
PXI w/ A/D
conventional transducers
custom communication
All data synchronized
![Page 12: A NEES Geotechnical Centrifuge Facility at Davis](https://reader036.vdocuments.us/reader036/viewer/2022062519/56814cb2550346895db9b77b/html5/thumbnails/12.jpg)
UC Davis12
Wireless concepts (Now focussing on A and B, C seems not optimal due to transmitter/battery size, D is more related to Geophysical
Testing component of our NEES project)