Stochastic and reliability analysis of a propeller with model reduction
DOI:
https://doi.org/10.13052/EJCM.18.195-215Keywords:
modal analysis, stochastic analysis, perturbation, reliability analysis, heuristic based reliability methodAbstract
Nowadays, design based on purely deterministic analyses has been replaced by stochastic and reliability analyses which consider the uncertainties affecting the design parameters. But from a numerical point of view, these analyses become costly for industrial mechanical applications (modelled by finite elements method) because of their great number of freedom degrees. In this work, we take an interest in reducing the CPU time for stochastic and reliability analyses of an industrial mechanical application by the modal condensation of his numerical model with the component mode synthesis method. The example of a propeller is studied to validate the proposed methods. The results of this study tend to show the considerable gain in CPU which we save by the using of our methodology.
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