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TENSEGRITY - Smart Structures - G@T

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A prize winning presentation on "TENSEGRITY architecture" under the topic of "SMART STRUCTURES" for 8 minutes on "BUILDOFEST 2017"

Tensegrity, tensional integrity or floating compression is a structural principle based on the use of isolated components in compression inside a net of continuous tension, in such a way that the compressed members (usually bars or struts) do not touch each other and the prestressed tensioned members (usually cables or tendons) delineate the system spatially.

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TENSEGRITY - Smart Structures - G@T

  1. 1. The term TENSEGRITY was coined by Buckminster Fuller in the 1960s as a portmanteau of "tensional integrity" SOURCE : WikiTensegrity KENNETH SNELSON X-PIECE-1949 Created by THEERUMALAI GA, GCE-TIRUNELVELI
  2. 2. = TENSION + INTEGRITY Tensegrity, tensional integrity or floating compression is a structural principle based on the use of isolated components in compression inside a net of continuous tension, in such a way that the compressed members (usually bars or struts) do not touch each other and the prestressed tensioned members (usually cables or tendons) delineate the system spatially. PIC:NEEDLE TOWERCreated by THEERUMALAI GA, GCE-TIRUNELVELI
  3. 3. SOURCE : WikiSpaces TensegrityCreated by THEERUMALAI GA, GCE-TIRUNELVELI
  4. 4. SOURCE: TensegrityWiki - Basics X-MODULETETRAHEDRONICOSAHEDRONPROTO TENSEGRITY PRISM GROUND HYPOTESIS A SIMPLE 3 MEMBER PRISM A SIMPLE 4 MEMBER PRISM Created by THEERUMALAI GA, GCE-TIRUNELVELI
  5. 5.  COMPRESSION MEMBERS  LOSES STIFFNESS  WHEN LOADED  TENSION MEMBERS  GAINS STIFFNESS  WHEN LOADED  ABSENCE OF BENDING MOMENT FORCES ACT THROUGH MASS CENTER  A LARGE STIFFNESS TO MASS RATIO CAN BE ACHIEVED  BY INCREASING THE NUMBER OF TENSIONAL MEMBERS  EFFICIENCY OF A STRUCTURE INCREASES  MINIMAL MASS DESIGN  Tensegrity structures use longitudinal members arranged in a very unusual pattern to achieve maximum strength with small mass. Created by THEERUMALAI GA, GCE-TIRUNELVELI
  6. 6.  COMPRESSION MEMBERS  EITHER DISJOINTED OR CONNECTED WITH BALL JOINTS  LARGE DISPLACEMENT, DEPLOYABILITY, STOWAGE IN A COMPACT VOLUME  HIGH OPERATIONAL AND PORTABILITY ADVANTAGES  SMALL VOLUME  FINE TUNING AND ADJUSTMENTS OF DAMAGES ARE POSSIBLE  SINCE MEMBERS ARE DISJOINT OR CONNECTED WITH BALL JOINTS  STRUCTURES ALLOWING EASY TUNING  IMPORTANT ASPECT  NEXT GEN MECHANICAL AND CIVIL STRUCTURES Created by THEERUMALAI GA, GCE-TIRUNELVELI
  7. 7.  STRUCTURE AS A WHOLE BENDS  INDIVIDUAL MEMBERS DON’T BEND  DON’T EXPERIENCE BENDING MOMENT  MEMBERS EXPERIENCING DEFORMATION IN 2 OR 3 DIMENSIONS ARE HARDER TO MODEL THAN MEMBERS EXPERIENCING FORCES IN ONE DIMENSION  INCREASED USE OF TENSILE MEMBERS  YIELD MORE EFFICIENT STRUCTURES  LOAD BEARING MEMBER CAN PERFORM  MULTIPLE FUNCTIONS  TENSION OR COMPRESSION MEMBER SENSOR (MEASURING LENGTH OR TENSION)  ACTUATOR( such as NiTi WIRE)  THERMAL INSULATOR  ELECTRICAL CONDUCTOR  PROPER CHOICE OF MATERIALS GEOMETRY, ELECTRICAL, MECHANICAL AND THERMAL ENERGY OF A MATERIAL AND A STRUCTURE CAN BE CONTROLLED Created by THEERUMALAI GA, GCE-TIRUNELVELI
  8. 8.  STRONGEST NATURAL FIBRE  SPIDER WEB  BETA PLEATED SHEETS  DISCONTINUOUS COMPRESSION MEMBERS  AMINO ACID MATRIX TENSION MEMBERS Created by THEERUMALAI GA, GCE-TIRUNELVELI
  9. 9. Applications of  tensegrity structures is appropriate in various areas of civil engineering such as: 1)Roof structures 2)Bridges 3)Smart structures Created by THEERUMALAI GA, GCE-TIRUNELVELI
  10. 10. The patented Telstar Tensegrity roof concept is employed, for twin peak contour and the plan configuration. It is more like a cable dome structure than to a conventional roof structure. Initial studies for the design of tensegrity grids were carried out by Snelson, but its applications were limited. SOURCE: TensegrityWiki - Basics THE ESTADIO CIUDAD DE LA PLATA Created by THEERUMALAI GA, GCE-TIRUNELVELI
  11. 11. MUNICH OLYMPIC STADIUM Created by THEERUMALAI GA, GCE-TIRUNELVELI
  12. 12.  OPENED ON 4TH OCTOBER,2009  470 M LONG AND 120 M MAIN SPAN  TWO LARGE VIEWING & RELAXATION PLATFORMS, TWO REST AREAS AND A CONTINUOUS ALL WEATHER CANOPY  550 TONS OF STEEL AND 6.8 KM OF SPIRAL STRAND CABLE KURILPA BRIDGE , BRISBANE- AUSTRALIA A cable-stay structure based on principles of Tensegrity producing a synergy between balanced tension and compression components to create a light structure that is incredibly strong. Created by THEERUMALAI GA, GCE-TIRUNELVELI
  13. 13. Civil Engineering structures are mostly static. One of the challenging functionality for Civil Engineering structures is an active adaptation to changing demands, such as load variations, temperature variations, settlement of supports and damage occurrence. The concept of active structures involves structures that include both static and active structural elements. Adaptive structures are defined as structures whose performance is controlled by a system composed of sensors, actuators and a computer that provides the ability to learn and improve response to changing environments. The system of Tensegrity structures gains the potential to adapt to change in environments, so they can be equipped with active control systems.MONTREAL BIOSPHERE Created by THEERUMALAI GA, GCE-TIRUNELVELI
  14. 14. Cloud Nine is the name Buckminster Fuller gave to his proposed airborne habitats created from giant geodesic spheres, which might be made to levitate by slightly heating the air inside above the ambient temperature. Created by THEERUMALAI GA, GCE-TIRUNELVELI
  15. 15. REFERENCE •Wikispaces: Tensegrity •Wikipedia: Tensegrity •Buckminster Fuller Institute •Kenneth Snelson website •Wyss Institute: Donald Ingber profile •Wyss Institute: tensegrity search •Ingber Lab at Children's Hospital Boston •Tensegrity in a Cell •RW GRAY’S ANALOGY ON TENSEGRITY •CONSTRUCTOR.ORG PIC: Turning TorsoCreated by THEERUMALAI GA, GCE-TIRUNELVELI
  16. 16. Created by THEERUMALAI GA, GCE-TIRUNELVELI

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