The Adobe delta damage model

A locally regularized rate-dependent model for the static assessment of soil masonry bricks and mortar

Journal article (2019)

Authors

T. li Piani Applied Mechanics - CEG , TNO, Netherlands Defence Academy
J. Weerheijm Applied Mechanics - CEG , TNO
L Koene Netherlands Defence Academy
Lambertus J. Sluys Materials- Mechanics- Management & Design
Research Group
Applied Mechanics (CEG) (TU Delft)
Compression Bending Damage Mortar Delta Adobe Boundary Brick Dependence Rate Mesh Dirichlet Mohr-Couloumb
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Published Date

2019

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Applied Mechanics

Abstract

A local damage model is proposed for the numerical assessment of the static performance of Adobe masonry components. The model was applied to simulate the experimental behaviour of sundried soil bricks and mud mortar tested in uniaxial compression and bending. Numerical simulations of the model are made mesh objective by means of a rate dependent regularization algorithm in statics. This is achieved using a generalization of the damage delay concept based on a decomposition of the Dirichlet boundary condition. It allows non-dimensionality of model parameters mathematically needed to prevent loss of ellipticity of the equilibrium equations of the model. The entire regularization algorithm is integrated within an implicit Newton-Raphson solver.