A simple model for damage analysis of a frame-masonry shear-wall system. (15th December 2017)

• Record Type: Journal Article
• Authors: Di Nino, Simona; D'Annibale, Francesco; Luongo, Angelo
• Is Part Of: International journal of solids and structures. Volume 129(2017)
• Page Start: 119
• Page End: 134
• Publication Date: 2017-12-15
• Subjects: Infill masonry framed -- Nonlinear analysis -- Simple discrete model -- Shear post-cracking behavior -- Elastic-damage -- Linear softening; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2017.09.007
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: This paper is aimed at evaluating dissipation and deformation capacities of frame-masonry shear-wall systems in post-cracking regime. A simple planar model consisting of a cracked masonry shear-wall, containing a centered window, confined on three sides by a portal frame, is formulated. Kinematics is linear and accounts for an "overall shear mode" and "local sliding modes", these latter describing relative motions among the cracked parts of the wall. A periodic horizontal force, roughly representative of the seismic actions, is acting at the top of the portal frame. An isotropic nonlinear damage law is adopted, and an Extended Galerkin-based variational formulation is followed to derive a low-dimensional discrete system. An ad-hoc resolution algorithm, based on a predictor-corrector scheme, is implemented, and numerical results discussed.