分析湿运垂直升船机中船厢子系统在升降过程中的动态 ,建立该流固耦合系统的频域求解数学模型 ,并用有限元数值方法求解 ,编制的计算程序可求得子系统在任一圆频率下的附加质量和振荡响应 ,并可得到子系统的共振频率 .这对升船机的设计、校核计算有一定现实意义 This paper analyzes the dynamic state of the sub-system during the ascent and descent of the ship-borne vertical lift ship, establishes the mathematical model of the fluid-solid coupling system in frequency domain, and solves it by finite element numerical method. The additional mass and oscillation response at the circular frequency, and the resonance frequency of the subsystem can be obtained, which has some practical significance for the design and verification of the shiplift