Weibull S-N Fatigue Strength Curve Analysis for A572 Gr. 50 Steel, Based on the True Stress—True Strain Approach
In this paper a Weibull methodology to determine the probabilistic percentiles for the S-N curve of the A572 Gr. 50 steel is formulated. The given Weibull/S-N formulation is based on the true stress and true strain values, which are both determined from the stress-strain analysis. For the analysi...
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| Materialtyp: | Artículo |
| Språk: | en_US |
| Publicerad: |
2020
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| Länkar: | https://doi.org/10.3390/app10165725 https://www.mdpi.com/2076-3417/10/16/5725 |
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| Sammanfattning: | In this paper a Weibull methodology to determine the probabilistic percentiles for the
S-N curve of the A572 Gr. 50 steel is formulated. The given Weibull/S-N formulation is based on
the true stress and true strain values, which are both determined from the stress-strain analysis.
For the analysis, theWeibull and parameters are both determined directly from the maximum and
minimum addressed stresses values. The S-N curve parameters are determined for 103 and 106 cycles.
In the application, published experimental data for the CSA G40.21 Gr. 350W steel is used to derive
the true stress and true strain parameters of the A572 Gr. 50 steel. Additionally, the application of the
S-N curve, its probabilistic percentiles and theWeibull parameters that represent these percentiles are
all determined step by step. Since the proposed method is flexible, then it can be applied to determine
the probabilistic percentiles of any other material. |
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