000021735 001__ 21735
000021735 005__ 20170622131302.0
000021735 04107 $$aeng
000021735 046__ $$k2017-06-15
000021735 100__ $$aAmendola, Ada
000021735 24500 $$aEXPERIMENTAL AND NUMERICAL STUDY OF WAVE DYNAMICS IN TENSEGRITY COLUMNS

000021735 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021735 260__ $$bNational Technical University of Athens, 2017
000021735 506__ $$arestricted
000021735 520__ $$2eng$$aThis work deals with the experimental testing and the numerical simulation of the impulsive dynamics of a tensegrity lattice. The analyzed system is a column made of ten regular tensegrity prisms, each composed of two solid triangular plates (bases), three cross bars, and three cross cables. Bars and bases are additively manufactured in a titanium alloy, through electron-beam melting, while cross cables are made of Spectra fibers and are added to the titanium structure afterward 3D-printing process. The experimental response of the examined tensegrity column under impact loading is studied by recording the waves traveling through the system by means of a Digital Image Correlation algorithm, which measures the axial displacements of the bases of each unit. We compare the experimental results with those obtained from numerical simulations performed by adopting two different nonlinear elastic models: one accounting for the presence of bending-stiff connections between the 3D-printed elements, and for the resulting mixed bending-stretching regime; the other one being a tensegrity model which describes a purely stretching response of the column. Such a comparison shows that the presence of bending-stiff connections may weaken the nonlinearity of the wave dynamics that is typical of tensegrity lattices with frictionless nodal connections. We also observe that a marked nonlinear behavior occurs in the case of pure-tensegrity response (no bending deformation) under small prestress. 1

000021735 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021735 653__ $$aTensegrity column, impulsive dynamics, 3D printing, experimental testing, stickand-spring structure.

000021735 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021735 720__ $$aAmendola, Ada$$iDaraio, Chiara$$iFraternali, Fernando$$iMicheletti, Andrea$$iFavata, Antonino$$iFabbrocino, Francesco
000021735 8560_ $$ffischerc@itam.cas.cz
000021735 8564_ $$s1643744$$uhttps://invenio.itam.cas.cz/record/21735/files/17728.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS28] Wave propagation
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000021735 962__ $$r21500
000021735 980__ $$aPAPER