ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper presents a probabilistic approach for fracture mechanics analysis of crackedstructures. The objective of this work is to calculate the rigidity of cracked structures based on failureprobability. The methodology consists of cracked structures modelling, finite element analysis withadaptive mesh, sampling of cracked structure including uncertainties factors and probabilistic analysisusing Monte Carlo method. Probabilistic analysis represents the priority of proceeding either suitableto repair the structures or it can be justified that the structures are still in safe condition. Therefore, thecombination of finite element and probabilistic analysis represents the failure probability of thestructures by operating the sampling of cracked structures process. The uncertainty of the crack sizecan produce a significant effect on the probability of failure, particularly for the crack size with largecoefficient of variation. The probability of failure caused by uncertainties relates to loads and materialproperties of the structure are estimated using Monte Carlo simulation technique. Numerical exampleis presented to show that probabilistic analysis based on Monte Carlo simulation provides accurateestimates of failure probability. The comparisons of simulation result, analytical solution and relevantnumerical results obtained from other previous works shows that the combination of finite elementanalysis and probabilistic analysis based on Monte Carlo simulation provides accurate estimation offailure probability
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.223.pdf
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