深海全通透耐压壳蠕变分析  

ANALYSIS ON CREEP DEFORMATION OF DEEP-SEA FULLY-TRANSPARENT PRESSURE-RESISTANT HULL

作　　者：何志豪 王芳[1,2] 李友洁 HE Zhihao;WANG Fang;LI Youjie(College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China;Shanghai Engineering Research Center of Hadal Science and Technology,Shanghai 201306,China)

机构地区：[1]上海海洋大学工程学院,上海201306 [2]上海深渊科学工程技术研究中心,上海201306

出　　处：《力学与实践》2024年第3期559-569,共11页Mechanics in Engineering

基　　金：国家重点研发计划项目(2021YFC2800600)资助。

摘　　要：有机玻璃(polymethyl methacrylate, PMMA)是一种透明高分子化合物,具有透明性好、耐腐蚀、重量轻、机械强度优异等优点,可作为全通透潜水器耐压壳体材料的候选材料。PMMA是一种黏弹性材料,当经受长时间的外界高压作用时,由PMMA制成的耐压结构可能发生蠕变,导致其承载能力下降。本文对PMMA耐压壳体进行了有限元分析,基于温度相关的时间硬化蠕变模型,获得了壳体的蠕变变形,并研究了不同类型无开孔和有开孔的耐压壳体的蠕变特性,分析了不同压力和温度下PMMA耐压壳体的应变-时间曲线和位移曲线。分析结果将为大深度载人潜水器全通透耐压舱的设计提供理论参考。Polymethyl methacrylate(PMMA)is a kind of transparent polymer compound with good transparency,corrosion resistance,light weight,and excellent mechanical strength,which can be the candidate fully-transparent pressure-resistant hull material of submersibles.PMMA is a viscoelastic material,and when subjected to prolonged external high pressure,the pressure-resistant structure made of PMMA may undergo creep deformation,resulting in a decrease in its load-bearing capacity.In the present study,finite element analyses on the PMMA pressure-resistance hulls are conducted aiming at obtaining the creep deformation based on temperature-dependent time-hardening creep model from a series material tests.The creep properties of different types of spherical hulls without or with large openings are studied.And the strain-time curves and displacement curves of PMMA pressure-resistant hulls under varying pressures and temperatures are analyzed.The analysis results will provide reference for design of full-transparent manned cabin in deep-sea submersibles.

关 键 词：有机玻璃 耐压壳体 蠕变变形 潜水器 

分 类 号：U674.941[交通运输工程—船舶及航道工程]