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《China Mechanical Engineering》 2016-17
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Modeling and Analysis for Sampling System of Deep-sea Gravity Piston Sampler Based on Wave Mechanics

Wen Zejun;Liu Zhan;Jin Yongping;Tian Xuling;Huang Liangpei;Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,Hunan University of Science and Technology;Hunan Provincial Engineering Laboratory of Equipment and Technology for Marine Mineral Resources Exploration,Hunan University of Science and Technology;Central South University;  
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.
【Fund】: 国家自然科学基金资助项目(51075141)
【CateGory Index】: TU415
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