全海深沉积物保压容器有限元分析

针对全海深沉积物气密取样器所采集的深渊海底沉积物样品,设计一套沉积物保压存储容器,从而为深渊海底生命演化等科学研究提供海底原位保压样品.首先,根据全海深沉积物保压容器的保压容积和保压性能的要求,开展保压容器几何结构参数的初步设计,并利用三维软件Solidworks建立保压容器的三维几何模型.其次,利用有限元分析ANSYS软件,开展模拟全海深超高压环境下的保压容器性能分析,检验保压容器的性能.最后,研究不同保压容器的壁厚和内径对保压容器性能的影响,结果表明:在保压容器的储存容积和保压容器壁厚相同的条件下,保压容器所受的最大应力随着保压容器内径的增大而逐渐增大,而保压容器的重量会逐渐减少.

Finite element analysis on whole-deep sea sedimentpressure maintaining container

Aiming at the deep seabed sediment sample which was collected by the whole-deep sea sediment airtight sampler, a pressure maintaining container was designed to meet the requirement of submarine in-situ samples which come from the whole-deep sea life evolution scientific research. Firstly, according to the volume and the pressure maintaining performance requirements of the pressure maintaining container, the preliminary design of geometric structure parameters of the pressure maintaining container was studied and the 3D geometry model of the pressure maintaining container was established by using the 3D software Solidworks. Secondly, the pressure maintaining performances of the pressure maintaining container were calculated and analyzed based on the finite element analysis ANSYS software for the case of whole-deep ultrahigh pressure environment. Finally, the pressure maintaining performances of the pressure maintaining container was analyzed under different thickness and diameter of the pressure maintaining container. The result shows that in the same wall thickness condition, the container maximum stress increase with the increase of ressure maintaining container diameter, while the container weight gradually decrease.