A rigid triangular FE macro-model with non-linear homogenized interfaces for the pushover analysis of in plane loaded masonry is presented. The shape of the mesh and the position of the interfaces is evaluated through a topology optimization approach where masonry properties are calibrated by means of a homogenization approach in the non-linear range. To tackle elastic and inelastic deformations, interfaces are assumed to behave as elasto-plastic with softening in both tension and compression, with orthotropic behavior. The two-step procedure competes favorably with classic equivalent frame approaches because it does not require a-priori assumptions on the mesh and on the length of the rigid offsets. An example of technical relevance is discussed, relying into a multi-story masonry wall loaded up to failure.

Simple homogenization-topology optimization approach for the pushover analysis of masonry walls

MILANI, GABRIELE;BRUGGI, MATTEO
2016-01-01

Abstract

A rigid triangular FE macro-model with non-linear homogenized interfaces for the pushover analysis of in plane loaded masonry is presented. The shape of the mesh and the position of the interfaces is evaluated through a topology optimization approach where masonry properties are calibrated by means of a homogenization approach in the non-linear range. To tackle elastic and inelastic deformations, interfaces are assumed to behave as elasto-plastic with softening in both tension and compression, with orthotropic behavior. The two-step procedure competes favorably with classic equivalent frame approaches because it does not require a-priori assumptions on the mesh and on the length of the rigid offsets. An example of technical relevance is discussed, relying into a multi-story masonry wall loaded up to failure.
2016
Proceedings of SAHC 2016 10th International Conference on Structural Analysis of Historical Constructions - Anamnesis, diagnosis, therapy, controls
978-113802951-4
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/997800
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