000021685 001__ 21685
000021685 005__ 20170622131259.0
000021685 04107 $$aeng
000021685 046__ $$k2017-06-15
000021685 100__ $$aPortioli, Francesco
000021685 24500 $$aON THE USE OF POINT CONTACT MODELS FOR COLLAPSE MECHANISM AND DYNAMIC ANALYSIS OF MASONRY STRUCTURES

000021685 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021685 260__ $$bNational Technical University of Athens, 2017
000021685 506__ $$arestricted
000021685 520__ $$2eng$$aIn this paper, we discuss the main issues concerning the use of point-based models to represent contact interactions in computational limit analysis and non-smooth contact dynamics of masonry structures. To investigate the response of masonry structures, numerical models composed of rigid blocks interacting at contact points located at the vertexes of the interfaces are used. A no-tension behavior with finite friction and infinite compressive strength is assumed at contact interfaces. The limit analysis problem and the contact dynamic problem are formulated in terms of equilibrium equations, which relate external and contact forces, kinematic equations, which ensure compatibility between contact displacement rates and block degrees of freedom, and additional relationships to model the behavior of contacts. Mathematical programming is used to solve the optimization problems arising from both limit analysis and the dynamic of the block assemblages. The accuracy and computational efficiency of the implemented formulations are discussed with reference to case studies selected from the literature.

000021685 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021685 653__ $$aMasonry block structures; Rigid blocks; Limit analysis; Non-smooth contact dynamics; Mathematical programming; Collapse mechanism analysis; Rocking behavior.

000021685 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021685 720__ $$aPortioli, Francesco$$iLandolfo, Raffaele$$iCascini, Lucrezia
000021685 8560_ $$ffischerc@itam.cas.cz
000021685 8564_ $$s907558$$uhttps://invenio.itam.cas.cz/record/21685/files/17502.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS27] Advanced numerical methods for historical masonry monuments preservation in seismic zone
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000021685 962__ $$r21500
000021685 980__ $$aPAPER