深海重力活塞取样器取样系统波动力学建模与分析  

Modeling and Analysis for Sampling System of Deep-sea Gravity Piston Sampler Based on Wave Mechanics

作　　者：文泽军[1] 刘湛[1,2] 金永平[3] 田续玲[2] 黄良沛[1] 

机构地区：[1]湖南科技大学机械设备健康维护湖南省重点实验室,湘潭411201 [2]湖南科技大学海洋矿产资源探采装备技术湖南省工程实验室,湘潭411201 [3]中南大学,长沙410083

出　　处：《中国机械工程》2016年第17期2280-2286,共7页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51075141)

摘　　要：首先以深海重力活塞取样器为研究对象,深入分析重力活塞取样器的结构特点与冲击取样工作原理;同时考虑海底特殊的取样环境与底质特性,应用波动力学理论,构建重力活塞取样器取样系统波动力学模型。随后对取样系统进行离散化处理,依据该模型研究重力活塞取样器取样系统冲击取样过程的数值计算方法。最后以冲击取样效率与贯入深度为性能指标,分析取样器配重、冲击高度及取样管直径对重力活塞取样器冲击取样性能的影响,同时对冲击部件内部应力进行分析,研究结论对重力活塞取样器的设计与优化具有一定指导意义。The working principles and structure characteristics of gravity piston sampler were deeply analyzed herein,the mechanics characteristics of seabed sediments was considered,based on the theory of wave mechanics,the sampling system involving a single rod wave mechanics model was established.Then,the sampling system was carried out the discrete treatments,and the numerical calculation method of the impact sampling process of impact sampling system was researched.Finally,based on the numerical simulation program,the influences of sampler weight stand,impact height,and sampler pipe diameter on the impact sampling performance for gravity piston sampler were analysed,and the impact parts internal stress was also analyzed.The conclusions has important guiding significance to the design and optimization of gravity piston samplers.

关 键 词：重力活塞取样器 海底底质 波动力学 数值模拟 

分 类 号：P756.5[天文地球—海洋科学]