﻿ 新型下水方式下支撑系统的数值仿真模拟
 舰船科学技术  2023, Vol. 45 Issue (13): 36-39    DOI: 10.3404/j.issn.1672-7649.2023.13.007 PDF

1. 江苏科技大学 船舶与海洋工程学院，江苏 镇江 212000;
2. 南通中远海运川崎船舶工程有限公司，江苏 南通 226000;
3. 上海交通大学，上海 200000;
4. 外高桥造船有限公司，上海 200000

Numerical simulation Research of support system under new launching method
WENG Pei1, XIE Si-yang2, JI Yong-jun3, LIU Jian-feng4, WANG Qing-feng1, ZHOU Hong1
1. Jiangsu University of Science and Technology, Zhenjiang 212000, China;
2. Nantong COSCO Shipping Kawasaki Ship Engineering Co., Ltd., Nantong 212000, China;
3. Shanghai Jiaotong University, Shanghai 200000, China;
4. Shanghai Waigaoqiao Shipbuilding Co., Ltd., Shanghai 200000, China
Abstract: This article takes PCTC as the research object and proposes a new type of launching method. In the process of launching, the existing deformation is uncoordinated. Through the support system between the two ship types, using a finite element numerical simulation method, using the data measured in the experiment, using the finite element software Abaqus to define a spring element that is only under compression, and compare the response of the spring element and the solid element to the structure. Therefore, the equivalent of springs is used to replace stows, which facilitates the subsequent strength analysis and transforms complex dynamics problems into relatively simple statics problems.
Key words: new launching method     floating dock     supporting system     numerical simulation
0 引　言

1 新型下水方式简介

 图 1 下水流程图 Fig. 1 Drainage process diagram

 图 2 结构分析模型 Fig. 2 Structural analysis model

2 试验及仿真分析 2.1 支撑系统中垫木的力学性能试验 2.1.1 试验原理

2.1.2 试验试样和设备

 图 3 压缩试验木材切割示意图 Fig. 3 Schematic diagram of wood cutting for compression test

2.1.3 试验结果

 图 4 试样受压载荷位移曲线 Fig. 4 Compression load displacement curve of the sample
2.2 支撑系统中垫木的数值模拟仿真方法 2.2.1 非线性有限元方法

2.2.2 非线性有限元计算 2.2.2.1 等效替代

 图 5 木头-弹簧等效示意图 Fig. 5 Wood-spring equivalent schematic diagram
2.2.2.2 替代方法

 $\delta L = \varepsilon L 。$ (2.1)

2.2.2.3 位移-时间曲线和应力云图

 图 6 测点示意图 Fig. 6 Schematic diagram of measuring points

 图 7 部分测点位移时间曲线图 Fig. 7 Displacement time curve of measuring point

 图 8 木头-弹簧等效对比图 Fig. 8 Wood-spring equivalent comparison chart

3 结　语

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