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Fatigue estimation on a high-speed wave piercing catamaran during normal operations
Citation
Warren, M and Ali-Lavroff, J and McVicar, J and Magoga, T and Shabani, B and Holloway, DS and Thomas, G, Fatigue estimation on a high-speed wave piercing catamaran during normal operations, Transactions of the Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering pp. 1-13. ISSN 1479-8751 (2022) [Refereed Article]
Copyright Statement
©2022: The Royal Institution of Naval Architects
DOI: doi:10.5750/ijme.v164i1.736
Abstract
The estimation of fatigue life in the design process is particularly important for weight-optimised ships such as high-speed aluminium craft, but to date no research has been published on the fatigue accumulation on large wave-piercing catamarans, focusing on long-term operations. This paper assesses the applicability of classification society rules for high-speed catamarans with respect to fatigue design. This was achieved by comparing the long-term distributions of stress, measured on a 111m long wave-piercing catamaran ferry whilst operating in the Canary Islands and during the delivery voyage, with load spectra estimated using a method accepted by the classification society, DNV. The paper also proposes an improved distribution fitment method for fatigue analysis. A detailed method to convert measured stress histories in the time domain into an appropriate stress-spectrum and fitment of Weibull parameters is presented. Results show that the simplified method accepted by the classification society is highly conservative regarding fatigue estimation compared to fatigue results based on measured data. The proposed combined Weibull fitment method substantially improves the accuracy of simplified fatigue analysis methods.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | fatigue, classification society, wave piercing catamaran, Weibull statistics, high-speed |
| Research Division: | Engineering |
| Research Group: | Mechanical engineering |
| Research Field: | Mechanical engineering not elsewhere classified |
| Objective Division: | Transport |
| Objective Group: | Water transport |
| Objective Field: | International passenger water transport (e.g. passenger ships) |
| UTAS Author: | Warren, M (Mr Mark Warren) |
| UTAS Author: | Ali-Lavroff, J (Dr Jason Ali-Lavroff) |
| UTAS Author: | Shabani, B (Dr Babak Shabani) |
| UTAS Author: | Holloway, DS (Associate Professor Damien Holloway) |
| UTAS Author: | Thomas, G (Professor Giles Thomas) |
| ID Code: | 151206 |
| Year Published: | 2022 |
| Funding Support: | Australian Research Council (LP170100555) |
| Deposited By: | Engineering |
| Deposited On: | 2022-07-25 |
| Last Modified: | 2022-08-04 |
| Downloads: | 0 |
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