﻿ 船用定向强声装置转台的抗振设计与仿真分析
 舰船科学技术  2022, Vol. 44 Issue (19): 69-74    DOI: 10.3404/j.issn.1672-7649.2022.19.014 PDF

1. 海军装备部，湖北 武汉 430064;
2. 中国舰船研究设计中心，湖北 武汉 430064;
3. 北京中安航信科技有限公司，北京 100095

Anti-vibration design and simulation analysis of marine directional strong sound device turntable
WANG Xiao-qiang1, HU Xiao2, ZHU Ma-pao3
1. Naval Equipment Department, Wuhan 430064, China;
2. China Ship Research and Design Center, Wuhan 430064, China;
3. Beijing Zhongan Hangxin Technology Co., Ltd., Beijing 100095, China
Abstract: To study the application of sub-system turntable of directional strong sound device in marine environment, adapt to vibration condition and work reliably. The research on vibration resistance of turntable in marine environment was carried out. Firstly, the structure of the mechanical body and shafting of the turntable is designed. Then, the finite element analysis software Ansys Workbench is used to simulate the vibration, vibration, bump and pendulum impact, the natural frequency, stress, deformation, displacement and strain of the turntable, as well as the dynamic response, transient response and dynamic analysis of the components are obtained. The results show that the forces on all parts of the turntable are less than the yield limit value, the design of the turntable satisfies the test conditions of the ship, and can be tested and verified by the production of the prototype.
Key words: directional strong sound device     turntable     vibration     bumping     pendulum impact Ansys Workbench
0 引　言

1 构　成

2 装置应用环境

1）振动[3]

2）冲击[4]

3）颠震[5]

3 转台结构设计

 图 1 转台外形图 Fig. 1 Table drawing

1）机械台体

2）控制系统

4 转台抗振仿真分析

1）分析项目

① 进行横向、垂向、纵向随机振动分析，评估设备结构强度；

② 进行横向、垂向、纵向扫频振动分析，评估设备结构强度；

③ 进行横向、垂向、纵向定频耐久振动分析，评估设备结构强度；

④ 进行垂向颠震分析，评估设备结构强度；

⑤ 进行横向、垂向、纵向冲击响应计算，评估设备结构强度。

2）分析思路

3）评估准则

① 结构强度评估

② 有限元简化几何模型[7]方法及假设

4）模型建立

① 对转台进行了有限元离散处理，划分有限元单元节点数目为298004个，有限元单元网格数目为151943个。

② 根据实际安装情况，对转台底部施加固定约束。

5）模态分析

6）随机振动分析

 图 2 X轴随机振动转台位移云图与应力云图 Fig. 2 Displacement nephogram and stress nephogram of x-axis random vibration turntable

7）谐响应分析 （扫频振动分析）

 图 4 X轴扫频转台响应点加速度曲线、位移云图和应力云图 Fig. 4 Response point acceleration curve, displacement nephogram and stress nephogram of x-axis frequency sweep turntable

8）谐响应分析（定频试验）

9）转台颠震试验分析

 图 6 Z轴向颠震转台位移云图和应力云图 Fig. 6 Displacement nephogram and stress Nephogram of z-axis shaking table

10）摆锤冲击试验分析

 ${A}_{0}=98.1\frac{19.05+{m}_{a}}{2.72+{m}_{a}} ，$ (1)
 ${V}_{0}=1.52\frac{5.44+{m}_{a}}{2.72+{m}_{a}}。$ (2)

 图 7 Z轴冲击转台位移云图与应力云图 Fig. 7 Displacement nephogram and stress nephogram of z-axis impact turntable

5 结　语

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