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VESELÝ, V. FRANTÍK, P. KERŠNER, Z.
Original Title
Cracked volume specified work of fracture.
Type
conference paper
Language
English
Original Abstract
The paper introduces a method for the determination of fracture mechanics parameters of quasi-brittle materials based on specification of the energy dissipated in the non-linear zone at the macroscopic crack tip (the zone in which the failure mechanisms occur during the fracture process in these materials) according to the volume of this zone. For an estimation of the size and shape of the zone evolving at the crack tip which is in the case of quasi-brittle materials referred to as the fracture process zone (FPZ) - a special technique is being developed. The procedure is based on a general description of the stress field in cracked bodies carried out byWilliams power series in combination with the philosophy and selected features of classical non-linear fracture models for concrete, i.e. equivalent elastic crack models and cohesive crack models. The estimation of FPZ development during fracture, as well as the analysis of the progress of the energy quantity dissipated there, is illustrated in the paper for the case of numerically simulated fracture tests on notched beams under three-point bending.
Keywords
fracture, quasi-brittle, fracture process zone, work of fracture, materiál property, boundary effect
Authors
VESELÝ, V.; FRANTÍK, P.; KERŠNER, Z.
RIV year
2009
Released
1. 9. 2009
Location
Funchal, Madeira, Portugalsko
ISBN
978-1-905088-30-0
Book
Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing
Pages from
1
Pages to
18
Pages count
BibTex
@inproceedings{BUT32251, author="Václav {Veselý} and Petr {Frantík} and Zbyněk {Keršner}", title="Cracked volume specified work of fracture.", booktitle="Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing", year="2009", pages="1--18", address="Funchal, Madeira, Portugalsko", isbn="978-1-905088-30-0" }