17 Result(s)
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Article
Deformation characteristics and constitutive model of seafloor massive sulfides
Deformation characteristics and constitutive model of seafloor massive sulfide (SMS) were selected as the research object. Uniaxial/triaxial compression test were carried out on the mineral samples, and the de...
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Article
An intelligent method for contact fatigue reliability analysis of spur gear under EHL
To complete the contact fatigue reliability analysis of spur gear under elastohydrodynamic lubrication (EHL) efficiently and accurately, an intelligent method is proposed. Oil film pressure is approximated usi...
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Article
Application of response surface method for contact fatigue reliability analysis of spur gear with consideration of EHL
In order to consider the effects of elastohydrodynamic lubrication (EHL) on contact fatigue reliability of spur gear, an accurate and efficient method that combines with response surface method (RSM) and first...
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Article
Numerical simulation of deepwater deployment for offshore structures with deploying cables
Deepwater deployment of offshore structures in different sea states was investigated. The whole deployment system was modeled as a lumped mass model, and discretization scheme for cable geometry and methodolog...
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Article
Modeling of miner track system during steering motion
Equipment for deep sea mining has risen from a position of virtual non-existence to a major industrial significance and in deep sea bed mining, the miner is the key equipment of the whole system that charges w...
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Article
Torsional vibration active control of hybrid construction machinery complex shafting
Due to the coaxial connection of engine, motor and pump, the dynamic characteristics of hybrid construction machinery are changed, which generates a new torsional vibration problem of multi-power sources. To r...
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Article
Numerical investigation of water-entry of flatted-bottom seafloor mining tool in ocean waves
A numerical wave load model based on two-phase (water-air) Reynolds-Averaged Navier Stokes (RANS) type equations is used to evaluate hydrodynamic forces exerted on flatted-bottom seafloor mining tool during it...
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Article
Suspension principle of deep-ocean nodule collector
To make sure that the nodule collector can walk on the soft sediments of seafloor effectively, suspension principle of deep-ocean nodule collector is proposed. The supporting and driving mechanisms are separat...
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Article
Experimental investigation of clam water impact on flatted-bottom seafloor mining tool
A test rig for constant velocity water entry experiments was developed that drives a flatted-bottom section attached on six degree of freedom(6-DOF) platform to enter the water vertically at near constant velo...
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Article
Theoretical design and dynamic simulation of new mining paths of tracked miner on deep seafloor
With comprehensive considerations of the operational safety and collection efficiency for the tracked miner collecting the seafloor poly-metallic nodules, two new improved mining paths for the miner on the dee...
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Article
Fluid-solid interaction of resistance loss of flexible hose in deep ocean mining
The resistance loss of transportation was studied and the influences of buoyancy layout, mineral content and elastic modulus of flexible hose were investigated based on three-dimensional finite element model o...
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Article
Numerical simulation of calm water entry of flatted-bottom seafloor mining tool
The hydrodynamic problem of a two-dimensional model of seafloor mining tool entering still water vertically at constant speed was analyzed based on the velocity potential theory. For the assumption that the wa...
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Article
Design and implementation of model test installation of heave compensation system of deepsea mining
In order to validate the simulation model and develop heave compensation control strategy, heave compensation model tests were performed. The model test installation includes the mining ship motion simulator, ...
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Article
Neuron PI control for semi-active suspension system of tracked vehicle
A neuron proportion integration (PI) control strategy for semi-active suspension system of tracked vehicle was proposed based on its unique structure and the multiple and complex environment of the driving tra...
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Article
Concentrated and gastight sampling technique of deepsea microplankton
A new sampling method of deepsea microplankton with function of in-situ concentrated sampling and gastight sampling was proposed. In-situ concentrated sampling technique was realized as follows: a microplankto...
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Article
FEM modeling for 3D dynamic analysis of deep-ocean mining pipeline and its experimental verification
3D dynamic analysis models of 1000 m deep-ocean mining pipeline, including steel lift pipe, pump, buffer and flexible hose, were established by finite element method (FEM). The coupling effect of steel lift pi...
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Article
Dynamics of vertical pipe in deep-ocean mining system
A 3-D geometrical nonlinear model for the entire lift system of 1000-m sea trial system of China Ocean Mineral Resources R&D Association was established with finite element method. The model was utilized to an...
