Detail publikace

Wedge-Splitting Test Determination of Minimal Starting Notch Length for Various Cement Based Composites. Part II: Crack and Notch Fracture Mechanics Approaches

SEITL, S. KLUSÁK, J. VESELÝ, V. ŘOUTIL, L.

Originální název

Wedge-Splitting Test Determination of Minimal Starting Notch Length for Various Cement Based Composites. Part II: Crack and Notch Fracture Mechanics Approaches

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The paper focuses on the geometrical proportions of cube-shaped quasi-brittle specimens subjected to a wedge-splitting test (WST). The minimal/optimal initial crack/notch length for successful performance of WST on these specimens is studied numerically (ANSYS). This second part of the paper treats the problem asymptotically, i.e. from the point of view of a very fine grained silicate composite material with negligible characteristic length which describes the level of the material brittleness (i.e. brittle). The problem of competition of the crack initiation point between the notch tip and the groove corner in the load-imposing area of the specimen is solved using theories of both linear elastic fracture mechanics and fracture mechanics of generalized singular stress concentrators. The numerically obtained crack/notch length is compared to results of numerical simulations using cohesive crack model reported in the first part of the paper. The minimal notch length is recommended.

Klíčová slova

wedge-splitting test, cementitious composites, quasi-brittle fracture, brittle fracture, notch length, general singular stress concentrator.

Autoři

SEITL, S.; KLUSÁK, J.; VESELÝ, V.; ŘOUTIL, L.

Rok RIV

2010

Vydáno

5. 10. 2010

Místo

Švýcarsko

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Ročník

10

Číslo

4

Stát

Švýcarská konfederace

Strany od

81

Strany do

84

Strany počet

4

BibTex

@article{BUT50172,
  author="Stanislav {Seitl} and Jan {Klusák} and Václav {Veselý} and Ladislav {Řoutil}",
  title="Wedge-Splitting Test Determination of Minimal Starting Notch Length for Various Cement Based Composites. Part II: Crack and Notch Fracture Mechanics Approaches",
  journal="Key Engineering Materials (print)",
  year="2010",
  volume="10",
  number="4",
  pages="81--84",
  issn="1013-9826"
}