船舶建造時における船体変形の研究(第2報)

概要

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In the previous report, the deformation of ship's hull on berth caused by simple loading, temperature variation, or welding shrinkage was discussed.In this report, superimposed deformation and lowering of ship's hull as well as building berth through construction and testing period over one month will be discussed, and it will be shown that the unexpectedly large amount of lowering of ship's bottom, amounting to 20〜30 mm, is not necessarily due to overloading, but nature of wood, in other terms, the accumulation of both unrecoverable deformation with loading cycles and time effect in keel blocks or wooden supports.In addition, some ideas will be developed which will be useful in the prediction and interpretation of ship's condition, sagging or hogging, encountered immediately after ship's launching.
社団法人日本船舶海洋工学会の論文