Publication detail

Numerical prediction of parasitic energy dissipation in wedge splitting tests on concrete specimens

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"
}