Dynamic interface model for masonry walls subjected to high strain rate out-of-plane loads

Abstract

The present study proposes a dynamic constitutive material interface model that includes non-associated flow rule and high strain rate effects, implemented in the finite element code ABAQUS as a user subroutine. First, the model capability is validated with numerical simulations of unreinforced block work masonry walls subjected to low velocity impact. The results obtained are compared with field test data and good agreement is found. Subsequently, a comprehensive parametric analysis is accomplished with different joint tensile strengths and cohesion, and wall thickness to evaluate the effect of the parameter variations on the impact response of masonry walls.

A Discrete Macro-Model Using Homogenization With Strain-Rate Dependency for the Out-of-Plane Study of Masonry Panels Subjected to Impact Loading

“…Conversely, both the present and the micro-model by Rafsanjami et. al [32] are accurate in predicting the peak displacement, with a relative error of around 10%. Fig.…”

“…The wall is subjected to a low velocity impact load that tries to represent the impact of a vehicle. The comparisons will be performed by means of the experimental determined data [31], but also with numerical results collected from the studies of [25,32]. The selected parapets (from 21 tested) are designated as C6 and C7 and are replicates, see Fig.…”

“…al. in [32] that covers the current masonry parapets, use the same laws hereby presented to define the strain-rate dependency of masonry interfaces using a micro-modelling strategy.…”

“…al [25], (iii) the numerical model by Rafsanjami et. al [32] and, the simulation results of the discrete homogenized-based model are depicted. The curve by Burnett et.…”

Uncertainty in the numerical modelling of masonry triplet tests under dynamic loading

“…Several authors [6,8,12,13] have identified the need for continuing development of these numerical modelling approaches to appropriately consider the variability present in masonry construction and its non-linear behaviour to give the most accurate predictions [3].…”