水下结构物舱壁振动控制的结构参数优化研究

舱壁结构参数选择对舱壁振动性能有直接影响。为减小舱壁振动,采用有限元法,选择舱壁板厚度、加强筋数量、加强筋截面大小为变化的结构参数,分析振动随激振力频率、激振力作用方向、舱壁结构参数的变化规律,得到在动载荷作用下,舱壁振动的均方法向速度频响曲线,并以此为依据,设计了潜艇舱壁的结构形式和结构参数。优化的结果可以为舱壁结构参数选择提供理论依据。

Optimal Parametric Design of Bulkhead Vibration Control for Underwater Structure

The approach of structural parameter selection may have obvious impact on the vibration characteristics of bulkheads of underwater structure.For purpose of reducing the structural vibration,variations of bulkhead plate thickness,numbers and cross-sections of reinforced rib were investigated numerically by the Finite Element Method（FEM）.On that basis,various characteristics changing with the vibration frequency-response,direction of excited force and structural parameters were analyzed,and the results of mean square normal velocity versus frequency-response subjected to dynamic loads were obtained.This research provides a basis for parameter selection and structural configuration in the design of similar bulkheads.