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Fatigue damage analysis of wide-band Gaussian processes based on the modified Tovo-Benasciutti (T-B) method
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Kui-lin YUAN, Zhuo-cheng SUN
Journal of Ship Mechanics | 2024, 28(2) : 261 - 272
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Journal of Ship Mechanics | 2024, 28(2): 261-272
• Structural Mechanics •
Fatigue damage analysis of wide-band Gaussian processes based on the modified Tovo-Benasciutti (T-B) method
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Kui-lin YUAN, Zhuo-cheng SUN
Affiliations
  • State Key Lab of Structural Analysis for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, China
Published: 2024-02-20 doi: 10.3969/j.issn.1007-7294.2024.02.009
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In this paper, a new frequency-domain analysis method based on the modified Tovo-Benasciutti (T-B) method was proposed to calculate the fatigue damage under wide-band Gaussian random processes. According to the parametric power spectrum with different spectral shapes, a new nonlinear function model for the key parameter bTB of T-B method was developed through the time-domain fatigue damage analysis. Compared with the original T-B method, the modified T-B method was proposed by introducing the slope parameter m of S-N curves into the new function model of parameter bMTB. Through the numerical tests with parametric power spectrum and real power spectrum, the results of time-domain rain-flow counting (RFC) method was used as reference, and the accuracy and robustness of the modified T-B method were verified against several existing frequency-domain methods.

broad-band Gaussian random process  /  fatigue damage  /  modified T-B spectrum method  /  numerical simulation
Kui-lin YUAN, Zhuo-cheng SUN. Fatigue damage analysis of wide-band Gaussian processes based on the modified Tovo-Benasciutti (T-B) method[J]. Journal of Ship Mechanics, 2024 , 28 (2) : 261 -272 . DOI: 10.3969/j.issn.1007-7294.2024.02.009
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Year 2024 volume 28 Issue 2
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doi: 10.3969/j.issn.1007-7294.2024.02.009
  • Receive Date：2023-08-27
  • Online Date：2026-03-21
  • Published：2024-02-20
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  • Received：2023-08-27
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    State Key Lab of Structural Analysis for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, China
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