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| Characteristics of cutting force in marine gas hydrate by cutter suction exploitation |
| Received:September 20, 2017 Revised:January 30, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170920003 |
| KeyWord:gas hydrates cutting head cutting force simulation cutting interval angle |
| Author | Institution |
| 徐海良 |
中南大学 机电工程学院, 长沙 |
| 胡文港 |
中南大学 机电工程学院, 长沙 |
| 杨放琼 |
中南大学 机电工程学院, 长沙 |
| 孔维阳 |
中南大学 机电工程学院, 长沙 |
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| Abstract: |
| The finite element model for cutting natural gas hydrate sediments was established according to the structure and working principle for the cutter head and the physical properties of the gas hydrate sediments.ANSYS/LS-DYNA simulation software and the Drucker-Prager material model were used to simulate the cuttings of the gas Hydrate sediment,and analyse the stress characteristics of the cutter in horizontal direction,vertical direction and rotation direction during the cutting process.The main working parameters,such as traverse rate,rotational speed,down angle and cutting interval angle was simulated.The results show that increasing the traverse rate will increase the force in the three directions of the cutter.The increase of the rotational speed will reduce the cutting force,but the reduction rate of the cutting force decreases with the increase of the rotational speed.The increase of the cutter angle will increase the axial force of the cutter and affect the smoothness of the mining truck.With the increase of the cutting interval angle,the X-axis force increases first and then decreases.Using a larger cutting interval angle can improve the cutting efficiency and the stability of mining vehicles. |
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