Cracking propagation prediction methodology applied for a bulk carrier
This paper presents a methodology of evalutation aiming to predict the crack propagation in ships in the case of ductile materials under fatigue load This methodology, based on linear elastic fracture mechanics concepts, is the result of a literature review from the continuum mechanics to be applied...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade - Faculty of Mechanical Engineering, Belgrade
2017-01-01
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| Series: | FME Transactions |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/1451-2092/2017/1451-20921703428D.pdf |
| Summary: | This paper presents a methodology of evalutation aiming to predict the crack propagation in ships in the case of ductile materials under fatigue load This methodology, based on linear elastic fracture mechanics concepts, is the result of a literature review from the continuum mechanics to be applied in the naval area. The resulting mathematical sequence is based on energy theory associated to preexisting crack applying Paris's Law relating the propagation rate of the crack size, stress variation and number of cycles until it reaches a critical size. The application of a stress correction factor is considered due to the hardening that provides plasticity in the region of crack. To demonstrate the proposed methodology application in shipbuilding area a model of bulk carrier was used. The development of this paper is expected to contribute with a mathematical model that permits to predict crack propagation under fatigue action. |
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| ISSN: | 1451-2092 2406-128X |