Goodman relation

Goodman relation

Hanger cable fatigue life assessment of a major suspension bridge

Published in Khaled M. Mahmoud, Risk-based Bridge Engineering, 2019

The term Δs in Equation 2 represents the stress range divided by the ultimate strength of the strand. The mean stress on the strand is another aspect which has an influence on fatigue damage and is taken into account by modifying the stress range with the Goodman relation given in Equation 3 (Alani & Raoof 1996). () Δs =Δσ/σu1−σmσu

Fatigue life evaluation model for high-strength steel wire considering different levels of corrosion

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Journal Information

Published in Structure and Infrastructure Engineering, 2022

Nani Bai, Hui Li, Junming Ma, Chengming Lan, Billie F. Spencer

Based on the multiparameter Weibull model for corrosion-stress-life (C-S-N) and the available fatigue data reported in the literature, this article explores the quantitative influence of a wide range in the degree of corrosion, i.e. the loss of weight from 0.18% to 18.67%, on the fatigue life of high-strength steel wires. The limitation of the Weibull model for C-S-N is elaborated, and the dependence of stress ranges on positive stress ratios is considered for the available fatigue data based on the Goodman relation. From the statistical point of view, all the available fatigue data for corroded steel wires is pooled together to improve the accuracy of parameter estimation and the applicable scope of the model.

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Hanger cable fatigue life assessment of a major suspension bridge

Fatigue life evaluation model for high-strength steel wire considering different levels of corrosion