弹体落水过程中附加质量变化影响研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (14) : 171-176.

论文

弹体落水过程中附加质量变化影响研究

倪宝玉，孙士丽，孙龙泉，张成

作者信息 +

Research on variation of the added mass of the missile during its entering in water

NI Bao-yu, SUN Shi-li, SUN Long-quan, ZHANG Cheng

Author information +

文章历史 +

摘要

摘要：本文基于势流理论，建立弹体边界元模型，研究了弹体刚体运动、弹性振动引起的附加质量随弹体浸湿长度的变化规律，以及砰击力的变化。并在结构多自由度系统运动方程中计及附加质量的变化影响，得到附加质量变化不仅引起系统质量阵变化，还将影响阻尼系数阵。

Abstract

Abstract: Based on the potential flow theory, the boundary element model of the missile is built and the variation of the added masses, induced by both rigid body motion and the elastic vibration, are studied. Besides, the influences of added mass on slamming force and kinematic equation of structure are also investigated. Through calculation, not only the mass matrix but also the damping coefficient of the system will be affected.

导出引用

倪宝玉;孙士丽;孙龙泉;张成. 弹体落水过程中附加质量变化影响研究[J]. 振动与冲击, 2012, 31(14): 171-176

NI Bao-yu;SUN Shi-li;SUN Long-quan;ZHANG Cheng. Research on variation of the added mass of the missile during its entering in water[J]. Journal of Vibration and Shock, 2012, 31(14): 171-176