Finite element analysis of deep sea fully transparent pressure resistant hull
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.
manned submersiblepressure resistant structurefinite element analysisultimate load
NETL
NSTL
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