﻿ 船用舌阀壳体结构的有限元分析
 舰船科学技术  2022, Vol. 44 Issue (9): 123-125    DOI: 10.3404/j.issn.1672-7649.2022.09.025 PDF

A finite element analysis on the body of the flap valve of the ship
SUN Chun-peng, CHENG Liang-jiang, DING Hong-yuan, DENG Peng
Wuhan Second Ship Design and Research Institute , Wuhan 430205, China
Abstract: Using finite element analysis, the structural analysis on the body of the flap valve was performed to improve the structure of the flap valve.The results of finite element analysis were based on the finite element models and boundary conditions. The research indicated that with finite element analysis of the flap valve, we can directly study the deformation and the distribution of intensity led by outside loads.Then we can optimize the structure according to the study result. The deformation of important part has been reduced and the seal capability has been improved greatly after optimized.
Key words: flap valve     valve body     finite element analysis
0 引　言

1 舌阀结构

 图 1 舌阀结构简图 Fig. 1 The structural of the flap

2 有限元模型的建立

 ${\boldsymbol{K}} \times {\boldsymbol{U}} = F。$ (1)

3 边界条件

 图 2 舌阀有限元模型所受约束和载荷 Fig. 2 Constraints and loads on the finite element model of flap valve
4 计算结果与分析 4.1 变形

 图 3 舌阀总变形量图 Fig. 3 Total deformation of flap valve
4.2 应力

 $\sqrt{\frac{1}{2}\left[\left(\sigma_{1}-\sigma_{2}\right)^{2}+\left(\sigma_{2}-\sigma_{3}\right)^{2}+\left(\sigma_{3}-\sigma_{1}\right)^{2}\right]} \leqslant\left[\sigma_{x}\right]。$ (2)

 图 4 舌阀应力 Fig. 4 Flap valve stress

 图 5 改进后舌阀加筋板模型 Fig. 5 Improved flap valve stiffened model

 图 6 改进后舌阀总变形量 Fig. 6 Total deformation of flap
5 结　语

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