The influence of material variability upon the multiaxial LCF assessment of engineering components is missing for a comprehensive description. In this paper, a probabilistic framework is established for multiaxial LCF assessment of notched components by using the Chaboche plasticity model and Fatemi-Socie criterion. Simulations from experimental results of two steels reveal that the scatter in fatigue lives can be well described by quantifying the variability of four material parameters Ïfâ²,εfâ²,b,c. A procedure for choosing the safety factor for fatigue design has been derived by using first order approximation.
Probabilistic framework for multiaxial LCF assessment under material variability
FOLETTI, STEFANO;BERETTA, STEFANO
2017-01-01
Abstract
The influence of material variability upon the multiaxial LCF assessment of engineering components is missing for a comprehensive description. In this paper, a probabilistic framework is established for multiaxial LCF assessment of notched components by using the Chaboche plasticity model and Fatemi-Socie criterion. Simulations from experimental results of two steels reveal that the scatter in fatigue lives can be well described by quantifying the variability of four material parameters Ïfâ²,εfâ²,b,c. A procedure for choosing the safety factor for fatigue design has been derived by using first order approximation.| File | Dimensione | Formato | |
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accepted_probabilistic_multiaxial.pdf
Open Access dal 02/08/2017
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Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
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