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The journal International Shipbuilding Progress (ISP) was founded in 1954. Each year two issues appear (in March and September). Publications submitted to ISP should describe scientific work of high international standards, advancing subjects related to the field of Marine Technology, such as:
- Concept development
- General design of ships and offshore objects
- Ship and offshore structural design
- Hydro-mechanics and -dynamics
- Maritime engineering and machinery systems
- Production processes of all types of ships and other objects intended for marine use
- Production technology and material science
- Shipping science, economics, and all directly related subjects
- Ship operations
- Offshore and ocean engineering in relation to the marine environment
- Marine safety
- Efficiency, lifecycle, and environment
- Ice-related aspects for ships and offshore objects.
The contents of the papers may be of a fundamental or of an applied scientific nature and must be of the highest novelty and rigor.
Authors: Evans, J. Harvey | Boufounos, Th.P.
Article Type: Research Article
DOI: 10.3233/ISP-1977-2427101
Citation: International Shipbuilding Progress, vol. 24, no. 271, pp. 55-63, 1977
Authors: Yamamoto, Yoshiyuki | Ura, Tamaki
Article Type: Research Article
Abstract: A numerical simulation procedure is developed for determining stress distributions in the ore field of an ore carrier in a loading condition. Elasto-plastic stress analysis of the ore field is carried out on the basis of the elasto-plastic constitutive equation proposed by the present authors and the yield criterion of Drucker and Prager. The ore field and the hull structure are treated as one structural system for stress analysis. The results obtained are compared with experimental data by Hagiwara and Tani on an actual ship, and they show good agreements. Distributions of ore pressure are analyzed for various loading programs …and for various types of ore hold, and show that the initial stress distribution in the ore field just after loading is approximately given by the use of the Coulomb theory and the earth pressure at rest with the coefficient derived theoretically from the present constitutive equation. Numerical results for the additional ore stresses due to wave loads also show good agreements with experiments by Ando et al. Show more
DOI: 10.3233/ISP-1977-2427102
Citation: International Shipbuilding Progress, vol. 24, no. 271, pp. 64-72, 1977
Authors: Sarna, S.P. | Chapman, J.C.
Article Type: Research Article
Abstract: This paper is intended to make a small contribution to the body of fatigue data. The results are not intended to be used directly in the design of full-scale structures. The object was to examine the effect of stress concentration at the corners of the opening on the fatigue life of the specimen. The investigation covered both high and low-cycle fatigue. The results are used to determine coefficients for Heywood’s fatigue-strength formulae for a plain specimen, for a specimen with stress concentration, and for size effect. The results give some support to the form of these expressions. No …experimental evidence is available for specimens having dimensions approaching those of a ship’s deck, but the size-effect formula would indicate that for such dimensions the fatigue limit strength-reduction factor is close to the stress-concentration factor. On this basis the Heywood expressions enable the life at a hatch corner, for a given stress amplitude, to be calculated. Large-scale tests are required to verify such calculations. Show more
DOI: 10.3233/ISP-1977-2427103
Citation: International Shipbuilding Progress, vol. 24, no. 271, pp. 73-79, 1977
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