Abstract
Existing spectral fatigue analysis techniques used for the assessment of fatigue life of ship structures are based on the S-N curve approach. Such methods do not distinguish between the crack initiation and propagation stages and therefore they do not account for the influence of the size and growth of crack defects on local structural details. The application of fracture mechanics concepts could offer a meaningful alternative as they allow for the estimation of the residual fatigue life once cracks are identified. As a first step toward the pragmatic use of such methods this paper introduces a semi-analytical approach which leads to the derivation of analytical Stress Intensity Factors (SIF) by combining hybrid fracture mechanics theory with FEA. The potential of the method is demonstrated by studying the crack propagation effects on the fatigue life of typical joint idealization.
| Original language | English |
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| Title of host publication | Analysis and Design of Marine Structures - Proceedings of the 5th International Conference on Marine Structures, MARSTRUCT 2015 |
| Pages | 285-292 |
| Number of pages | 8 |
| ISBN (Electronic) | 9781138027893 |
| Publication status | Published - 1 Jan 2015 |
| MoE publication type | A4 Article in a conference publication |
| Event | International Conference on Marine Structures - Southampton, United Kingdom Duration: 25 Mar 2015 → 27 Mar 2015 Conference number: 5 |
Conference
| Conference | International Conference on Marine Structures |
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| Abbreviated title | MARSTRUCT |
| Country | United Kingdom |
| City | Southampton |
| Period | 25/03/2015 → 27/03/2015 |