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Ein Ansatz zur Lebensdauerabschätzung mehrachsig stochastisch beanspruchter Bauteile im Frequenzbereich
Author(s) -
Nguyen N.,
BacherHöchst M.,
Sonsino C. M.
Publication year - 2011
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201100851
Subject(s) - vibration fatigue , monte carlo method , structural engineering , probabilistic logic , random vibration , frequency domain , vibration , stress (linguistics) , materials science , computer science , engineering , fatigue testing , mathematics , statistics , physics , acoustics , mathematical analysis , linguistics , philosophy
This paper presents a probabilistic method for fatigue life estimation within the frequency domain for structural elements subjected to multiaxial random loadings. Multivariate Monte Carlo Simulation is used to account for the correlation between the stress components and their different probability of occurrence and, moreover, enables stochastics during damage analysis to be allowed for and, at the same time, uses any suitable, material dependent multiaxial fatigue criterion known from the time domain. Comparison of the evaluated fatigue damage with experimental results from vibration tests on a demonstrator, chosen from common application fields in the automobile industry, shows good correlation.