分離型上部構造の振動 (第1報)

概要

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In this paper, vibrations of the separate typed superstructure of which accmmodation quarter is separated from engine casing are investigated theoretically. Qualitative investigations of them are carried out using shear beams of uniform section on elastic foundation. Main conclusions are as follows: 1) When engine casing is connected to the accommodation quarter, coupled frequencies of them do not obey the law of so-called "spring-off". Namely, the 1st coupled frequency dose not become lower than the lower uncoupled frequency. It comes between two uncoupled frequencies. And the 2nd becomes higher than the higher one. 2) Coupled effect depend on mainly the ratio of the uncoupled frequency of accommodation to the one of engine casing. 3) Coupled effect for accommodation quarter of actual ships is about 5∼10%.
社団法人日本船舶海洋工学会の論文
1981-09-30