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VESELÝ, V. HOLUŠOVÁ, T. SEITL, S.
Original Title
Numerical prediction of parasitic energy dissipation in wedge splitting tests on concrete specimens
Type
conference paper
Language
English
Original Abstract
Undesirable energy dissipation taking place during wedge-splitting tests on cementitious composites and resulting in overestimation of the values of the determined fracture-mechanical characteristics of the tested materials is investigated in this paper via numerical simulations performed using a commercial finite element method tool with an implemented cohesive crack model. The rather broad range of cohesive behaviour of the studied materials was simulated through adjustments made to the corresponding characteristic length of the composite. The parasitic amount of energy is dissipated in fracture processes around the corners of the groove for the insertion of the loading platens, as these corners introduce rather strong stress concentrators to the specimen. This amount was extracted from simulated load-displacement curves and it was discovered that the amount considerably depends on the specimen proportions but its dependence on the level of material brittleness is not so significant
Keywords
wedge-splitting test, concrete fracture, specimen proportions, energy dissipation, numerical simulation
Authors
VESELÝ, V.; HOLUŠOVÁ, T.; SEITL, S.
RIV year
2012
Released
14. 5. 2012
Location
Svratka, Česká republika
ISBN
978-80-86246-40-6
Book
18th International Conference Engineering mechanics 2012
Pages from
368
Pages to
369
Pages count
2
BibTex
@inproceedings{BUT98256, author="Václav {Veselý} and Táňa {Holušová} and Stanislav {Seitl}", title="Numerical prediction of parasitic energy dissipation in wedge splitting tests on concrete specimens", booktitle="18th International Conference Engineering mechanics 2012", year="2012", pages="368--369", address="Svratka, Česká republika", isbn="978-80-86246-40-6" }