Detail publikace

Role of Deterministic and Statistical Length Scales in Size Effect for Quasibrittle Failure at Crack Initiation

VOŘECHOVSKÝ, M., BAŽANT, Z., NOVÁK, D.

Originální název

Role of Deterministic and Statistical Length Scales in Size Effect for Quasibrittle Failure at Crack Initiation

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

An improved generalized law for combined energetic-probabilistic size effect on the nominal strength for structures failing by crack initiation from a smooth surface is used for practical purposes – the paper proposes a procedure to capture both deterministic and statistical size effects on the nominal strength of quasibrittle structures failing at crack initiation. The advantage of the proposed approach is that the necessity of time consuming statistical simulation is avoided, only deterministic nonlinear fracture mechanics FEM calculation must be performed. Results of deterministic nonlinear FEM calculation should follow deterministic-energetic formula, a superimposition with the Weibull size effect, which dominates for large sizes using the energetic-statistical formula, is possible. As the procedure does not require a numerical simulation of Monte Carlo type and uses only the results obtained by deterministic computation using any commercial FEM code (which can capture satisfactorily deterministic size effect), it can be a simple practical engineering tool.

Klíčová slova v angličtině

size effect; quasibrittle materials and structures; extreme value statistics; Weibull statistics; characteristic lengths

Autoři

VOŘECHOVSKÝ, M., BAŽANT, Z., NOVÁK, D.

Rok RIV

2005

Vydáno

18. 6. 2005

Nakladatel

Millpress Rotterdam

Místo

Netherlands

ISBN

90-5966-040-4

Kniha

Safety and Reliability of Engineering Systems and Structures

Strany od

73

Strany do

80

Strany počet

8

BibTex

@inproceedings{BUT14798,
  author="Miroslav {Vořechovský} and Zdeněk P. {Bažant} and Drahomír {Novák}",
  title="Role of Deterministic and Statistical Length Scales in Size Effect for Quasibrittle Failure at Crack Initiation",
  booktitle="Safety and Reliability of Engineering Systems and Structures",
  year="2005",
  pages="8",
  publisher="Millpress Rotterdam",
  address="Netherlands",
  isbn="90-5966-040-4"
}