The Study On The Mechanical Characteristics Of The Seafloor Massive Sulfide And Simulation Analysis Of Cutting Process With The Spiral Drum

Abstract:Because of its shallow depth in sea, close distance to land and relatively high economic value, SMS is thought to have a better exploitation value. But the available SMS ore samples on land to do the experiment research are very limited. And because of the complexity of the deep-sea mining environment and the limitation of the mining technology, it is hard to undertake physical experiment at sea. This makes the simulated material research of SMS and computer simulation important to the deep-sea mining.This paper through conducting the uniaxial and triaxial compressive strength test of SMS, obtained some important mechanics performance parameters like compressive strength, cohesion and internal friction angle. Based on this, selected simulated material materials and proportioning and completed the production of the simulated material. At last, through testing the mechanics performance of the simulated material, verified the strength of the simulated material and the SMS are similar. The simulated material can replace the SMS in the laboratory test.On the basis of analyzing the movement and force of the spiral drum during the cutting process, this paper established MATLAB simulation program of cutting process of SMS. Then, set the drum load fluctuation coefficient as the objective function, optimized the structure and working parameters of spiral drum using the MATLAB optimization toolbox. Also, though the finite element analysis of the cutting picks on the spiral drum by using the ANSYS, obtained the stress and strain nephogram of the cutting picks during the cutting process. And the size of the cutting pick head is optimized by using ANSYS. The structure of the optimized cutting pick is more reasonable, the quality and the maximum stress of pick are greatly reduced.