Zoom seminar - Virtual laboratory for reinforced concrete: Lattice modelling

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• Peter Grassl, James Watt School of Engineering, University of Glasgow
• Friday 24 April 2020, 15:00-16:00
• Zoom (email structures-admin@eng.cam.ac.uk for link).

If you have a question about this talk, please contact Dr Maria Marques de Carvalho.

Improving the design of reinforced concrete requires a good understanding of its failure process, which is complex because of the interplay of cracking and crushing of concrete, yielding and rupture of steel, and time dependent deterioration processes such as corrosion induced cracking. A virtual laboratory, in which computer models are used to simulate the failure process, plays an important role in elucidating the effects of material composition on structural response. This presentation discusses recent progress in developing lattice models for analysing detailed fracture and mass transport processes. The application of lattice models to the analysis of fracture process zones, corrosion induced cracking and microcracking induced increase of permeability in concrete are discussed.

Selected references

Grassl P., Jirásek M., Gallipoli D. “Initiation of fluid-induced fracture in a thick-walled hollow permeable sphere”, European Journal of Mechanics-A/Solids 76, 123-134, 2019. Grassl P. and A. Antonelli. “3D network modelling of fracture processes in fibre-reinforced geomaterials”, Int J Solids Struct, vol. 156-157, Pages 234-242, 2019. Athanasiadis I., Wheeler S. and Grassl P. “Hydro-mechanical network modelling of particulate composites”, International Journal of Solids and Structures. Vol. 130-131, Pages 49-60, 2018. Fahy C., Wheeler S., Gallipoli D. and Grassl P. “Corrosion induced cracking modelled by a coupled transport-structural approach.” Cement and Concrete Research. Vol. 94, Pages 24-35, 2017. Grassl P., Bolander J. “Three-Dimensional Network Model for Coupling of Fracture and Mass Transport in Quasi-Brittle Geomaterials”, Materials, 9, 782, 2016. Xenos D., Grégoire D., Morel S. and Grassl P. “Calibration of nonlocal models for tensile fracture in quasi-brittle heterogeneous materials.” J Mech Phys Solids, vol. 82, Pages 48-60, 2015. Grassl P., Fahy C., Gallipoli D. and Wheeler S. J. “On a 2D hydro-mechanical lattice approach for modelling hydraulic fracture”. Journal of the Mechanics and Physics of Solids. Vol. 75, pp. 104-118, 2015. Grassl P. and Jirásek M. “Meso-scale approach to modelling the fracture process zone of concrete subjected to uniaxial tension”. Int J Solids Struct. Volume 47, Issues 7-8, pp. 957-968, 2010.

This talk is part of the Engineering Department Structures Research Seminars series.

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