Abstract
This chapter mainly studies how to obtain accurate and reliable calculation results of fatigue life after obtaining the non-Gaussian random stress response. First, the influence of sampling frequency on the calculation accuracy of fatigue damage is studied, and a stress signal reconstruction method based on Shannon's formula is proposed. Then, based on the rain-flow counting method, the calculation methods of the fatigue life of the structure under the action of narrowband and wideband non-Gaussian random stress are respectively proposed. Finally, the applicability and accuracy of the calculation method of non-Gaussian fatigue life are verified through specific example analysis.
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Acknowledgements
The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Nos. 51875570 and 50905181).
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Jiang, Y., Tao, J., Chen, X. (2022). Fatigue Life Analysis Under Non-Gaussian Random Vibration Excitation. In: Non-Gaussian Random Vibration Fatigue Analysis and Accelerated Test. Springer, Singapore. https://doi.org/10.1007/978-981-16-3694-3_5
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DOI: https://doi.org/10.1007/978-981-16-3694-3_5
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