EVALUATION EFFECTS OF PARTICLE-WALL FRICTION COEFFICIENT ON LATERAL PRESSURE DUE TO DRY BULK CARGO DURING HORIZONTAL SHIP MOTION USING DISCRETE ELEMENT METHOD

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  • 個別要素法を用いた横方向加振時の粒状貨物荷重に対する壁－粒子間摩擦係数影響の評価

Abstract

<p>To evaluate the loads due to dry bulk cargoes on the inner hull of bulk carriers, effects of the particle-wall frictional properties on internal lateral pressure during sway motion using Discrete Element Method (DEM). The dynamic load distribution shape in the lateral excitation analysis differ from that of liquid cargo. The results of the analysis using realistically set coefficients, the internal friction of the cargo and the friction between the cargo particles and the wall surface, demonstrated that the dynamic pressure decrease at the side wall where the particles collide because of shearing force on the walls. However, there was no significant difference in their decreasing effect in the range of realistic friction coefficients.</p>

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