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Evaluation, design and optimization for strength and integrity of polar class propellers
Citation
Liu, P and Bose, N and Veitch, B, Evaluation, design and optimization for strength and integrity of polar class propellers, Cold Regions Science and Technology, 113 pp. 31-39. ISSN 0165-232X (2015) [Refereed Article]
Copyright Statement
Copyright 2015 Crown Copyright
DOI: doi:10.1016/j.coldregions.2015.02.001
Abstract
An advanced 3D unsteady panel method was developed for the design and optimization of the strength and integrity
of polar class propellers. Blade ice loading specification in both milling and impact cases, under the Unified
Polar Class Rules (URI3), by the International Association of Classification Societies (IACS), was implemented. An
optimization example and analysis were given for an R-class propeller. The strength of the R-class propeller was
assessed for all 7 polar classes and 5 loading cases. Comparison was also made for all polar classes and ice loading
cases. As the blade has little skew with a wide chord, both the spindle torque and the in-plane bending moment
are small, so only out-of-plane bending failure is the key factor for strength. It was also found that by URI3, there
is little difference in strength requirement between polar classes 1 (strongest requirement) and 7 (the weakest).
An integrity design and optimization example showed a saving of 1.4 tonnes of blade material (22% saving) by
decreasing the safety factor to 1.51 (the minimum safety factor under URI3 is 1.5), for which case the blade thickness
is about 80% of the existing design.
Item Details
Item Type: | Refereed Article |
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Keywords: | propeller; ice-class; polar; design; strength |
Research Division: | Engineering |
Research Group: | Maritime engineering |
Research Field: | Marine engineering |
Objective Division: | Transport |
Objective Group: | Water transport |
Objective Field: | International sea freight transport (excl. live animals, food products and liquefied gas) |
UTAS Author: | Liu, P (Associate Professor Pengfei Liu) |
UTAS Author: | Bose, N (Professor Neil Bose) |
ID Code: | 99435 |
Year Published: | 2015 |
Web of Science® Times Cited: | 2 |
Deposited By: | NC Maritime Engineering and Hydrodynamics |
Deposited On: | 2015-03-24 |
Last Modified: | 2017-11-03 |
Downloads: | 0 |
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