商船の新振動基準の特徴と予測解析技術への適用

概要

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Vibration guidelines for evaluation of merchant ships (ISO6954) will be revised and published shortly. New guideline has been chamged substantially because of compatibility with ISO2631 which provided evaluation of human exposure to whole-body vibration. We proposed representation formula for vibration sensitivity curve in terms of weighting function and minimum sensitivity value, to compare various evaluation methods at the same figure. Using this formula, relation between physical quantity (velocity) of present evaluation value and sensory quantity of new version was made clear. Feature of new guideline was described by comparing 13 items of both guidelines. The evaluation values calculated by both methods for 20 ships data are compared mutually and the relative position of vibration levels were investigated. Some ohservations are proposed from practicial viewpoints necessary to apply new guideline. We defined of multi-frequency coefficient and obtained its value from measured data of ships. By introducing this coefficient, simple method for estimation of vibration response corresponding to new guideline is proposed.
社団法人日本船舶海洋工学会の論文
2001-03-25