Creep Modelling Of Masonry Historic Towers
Author(s)
E. Papa & A. Taliercio
Abstract
This work illustrates a theoretical model developed to reproduce the behaviour of
ancient masonry subjected to sustained stresses. Starting fiom a model recently
proposed by the authors, two damage tensors have been introduced into a
rheological model: the components of these tensors change both according to the
intensity of the applied stress and, in case of sustained stress, to the duration of
the load history. Evolution laws found in the literature for brittle materials have
been employed. The principal directions of damage are meant to represent the
directions of the experimental cracks; accordingly, when any damage direction is
activated, it remains unchanged throughout the subsequent load history. The
presence of second-order damage tensors makes it possible to describe the
damage-induced anisotropy of the microcracked material. Also, since the
possi
Keywords
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