深海全通透耐压结构有限元分析
Finite element analysis of deep sea fully transparent pressure resistant hull
吴瑜 1何志豪 1李友洁 1王芳1
作者信息
- 1. 上海海洋大学 上海深渊科学工程技术研究中心,上海 201306
- 折叠
摘要
在深海资源开发和发展深海技术的背景下,我国完成了载人潜水器的谱系化建设.近年随着对水下观测需求的增加,全通透载人潜水器引起广泛关注.本文基于有机玻璃试件压缩试验的结果,在LS-DYNA软件中建立有限元模型,通过试件模拟失效模式与试验结果对比,对典型的全透明深海耐压载人潜水器的失效分析进行敏感性研究.在准静态外压下进行极限强度分析之前,进行一阶线性屈曲模态分析以模拟初始几何缺陷.对有机玻璃载人潜水器的耐压壳失效形式和极限载荷进行分析,采用有限元分析方法,研究特定厚度半径比的有机玻璃载人潜水器的临界载荷,为其制造提供技术指导.
Abstract
With development of deep-sea resources and deep-sea technology,China has basically completed the genea-logy construction of deep manned submersibles with this goal.In recent years,with the increasing demand for underwater observation,deep-sea fully transparent pressure hulls have attracted widespread attention.This paper is based on the mechan-ical research results of compression tests on the material specimens,the finite element model in LS-DYNA software is estab-lished.By comparing the simulated failure modes of the specimens with the experimental results,sensitivity research is con-ducted on the failure analysis of typical fully transparent deep-sea pressure resistant hull.Before conducting ultimate strength analysis under quasi-static external pressure,first-order linear buckling modal analysis is performed to simulate initial geo-metric defects.The failure mode and ultimate load of the pressure hull of the pressure hull are analyzed,the critical load of the manned submersible with a specific thickness radius ratio is studied,which is providing technical guidance for fully transparent manufacturing.
关键词
载人潜水器/耐压结构/有限元分析/极限载荷Key words
manned submersible/pressure resistant structure/finite element analysis/ultimate load引用本文复制引用
基金项目
科技部重点研发计划资助项目(2021YFC2800600)
国家自然科学基金资助项目(52101320)
出版年
2024
NETL
NSTL
万方数据