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Title:
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Toepassing van simulatietechnieken in de probabilistischebreukmechanica
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Author(s):
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Published by:
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Publication date:
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ECN
NUCNUC
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1995
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ECN report number:
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Document type:
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ECN-I--94-060
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Other
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Number of pages:
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Full text:
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35
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Download PDF
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Abstract:
The Monte Carlo simulation is applied on a model of the fracturemechanics in order to assess the applicability of this simulation technique
in the probabilistic fracture mechanics. By means of the fracture mechanics
model the brittle fracture of a steel container or pipe with defects can be
predicted. By means of the Monte Carlo simulation also the uncertainty
regarding failures can be determined. Based on the variations in the
toughness of the fracture and the defect dimensions the distribution of the
chance of failure is determined. Also attention is paid to the impact of
dependency between uncertain variables. Furthermore, the influence of the
applied distributions of the uncertain variables and non-destructive survey
on the chance of failure is analyzed. The Monte Carlo simulation results
agree quite well with the results of other methods from the probabilistic
fracture mechanics. If an analytic expression can be found for the chance of
failure, it is possible to determine the variation of the chance of failure,
next to an estimation of the chance of failure. It also appears that the
dependency between the uncertain variables has a large impact on the chance
of failure. It is also concluded from the simulation that the chance of
failure strongly depends on the crack depth, and therefore of the
distribution of the crack depth. 15 figs., 7 tabs., 12 refs.
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