Publication result detail

Procedure of statistical size effect prediction for crack initiation problems

Vořechovský, M., Bažant, Z., Novák, D.

Original Title

Procedure of statistical size effect prediction for crack initiation problems

English Title

Procedure of statistical size effect prediction for crack initiation problems

Type

Paper in proceedings (conference paper)

Original Abstract

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.

English abstract

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.

Key words in English

size effect

Authors

Vořechovský, M., Bažant, Z., Novák, D.

Released

20.03.2005

Publisher

Politecnico di Torino

Location

Turin. Italy

Book

11th Interntional Conference on Fracture

Pages from

1166

Pages count

4

BibTex

@inproceedings{BUT17169,
  author="Miroslav {Vořechovský} and Zdeněk P. {Bažant} and Drahomír {Novák}",
  title="Procedure of statistical size effect prediction for crack initiation problems",
  booktitle="11th Interntional Conference on Fracture",
  year="2005",
  pages="4",
  publisher="Politecnico di Torino",
  address="Turin. Italy"
}