Fatigue Strength Assessment of Trimaran Cross-Deck Structure Based on Spectral and Simplified Fatigue Method
| Autor: | Tianlin Wang, Chunbo Zhen, Pengyao Yu, Liang Feng |
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| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Article Subject business.industry Computer science lcsh:Mathematics General Mathematics Flow (psychology) General Engineering 02 engineering and technology Structural engineering lcsh:QA1-939 Transfer function Fatigue limit Finite element method Deck Stress (mechanics) 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering lcsh:TA1-2040 Structure based lcsh:Engineering (General). Civil engineering (General) business Linear potential |
| Zdroj: | Mathematical Problems in Engineering, Vol 2019 (2019) |
| ISSN: | 1563-5147 1024-123X |
| DOI: | 10.1155/2019/6121584 |
| Popis: | In order to investigate the fatigue behaviour of trimaran cross-deck structural details, the spectral and simplified fatigue analysis approaches are proposed. In spectral fatigue approach, three-dimensional (3D) linear potential flow theory and global FE analysis are used for wave loads and stress transfer functions calculation; the stochastic spectral fatigue analysis is carried out considering the weighted wave headings factors. In simplified fatigue approach, based on the direct calculation procedure of LR rules, the evaluation of simplified fatigue loads and loading conditions are presented, and the stress ranges are obtained by global finite element (FE) analysis. Then the fatigue lives of a few hot spots are computed to demonstrate the application of the proposed method. The result shows that the method given in this paper has a good applicability. This study offers methodology for the fatigue analysis of trimaran cross-deck structure, which may be regarded as helpful references for structural design of these types of ships. |
| Databáze: | OpenAIRE |
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