000019318 001__ 19318
000019318 005__ 20170118182310.0
000019318 04107 $$aeng
000019318 046__ $$k2017-01-09
000019318 100__ $$aHutchinson, Tara
000019318 24500 $$aExperimental Validation of a Multi-Physics Model for the Seismic Response of Freestanding Structural Systems

000019318 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019318 260__ $$b
000019318 506__ $$arestricted
000019318 520__ $$2eng$$aSystems of unattached, or freestanding, structures are highly vulnerable to damage and overturning when subject to seismic excitation. This class of structures includes systems such as unreinforced masonry walls, multi-drum columns, statue-pedestal systems, and various mechanical or electrical equipment. Damage to these structures can result in loss of irreplaceable heritage, limited functionality of critical structures, and even loss of life. As a result, accurate prediction of their response is essential. However, traditional analytical methods cannot readily incorporate multiple bodies, multiple modes, and threedimensional behavior – each of which has been shown to significantly affect the response in recent experiments. Therefore, in this paper, a numerical model is developed in the commercially available and widely-used multi-physics platform LSDYNA. The fully three-dimensional numerical model employs a penalty-based contact definition lumping non-linearity at system’s interfaces and allowing large displacements and rotations of the individual structures. The model is validated using the results of an extensive shake table testing campaign, which included various geometric configurations of symmetric and eccentric freestanding structures in single or stacked systems. The model is shown to sufficiently capture the salient features of the system response including three-dimensionality and the interaction of multiple modes such as sliding and rocking. Furthermore, numerical simulations indicate that the model can be used to predict the dynamic response of these structures with high fidelity.

000019318 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019318 653__ $$arocking; sliding; numerical modeling; shake table test; multi-body systems;

000019318 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019318 720__ $$aHutchinson, Tara$$iWittich, Christine
000019318 8560_ $$ffischerc@itam.cas.cz
000019318 8564_ $$s922306$$uhttps://invenio.itam.cas.cz/record/19318/files/3370.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3370.
000019318 962__ $$r16048
000019318 980__ $$aPAPER