Influence of cutting angle on mechanical properties of rock cutting by conical pick based on finite element analysis

• Autorzy: Qiao S. , Zhang Z. Q. , Zhu Z. M. , Zhang K.

Identyfikatory

DOI

10.37190/msc212812

• Języki publikacji: EN

Abstrakty

EN

In view of the current situation that it is difficult to obtain the actual cutting force received by the conical pick of Continuous-Miner and to deal with the characteristics of the cutting force. By using contact dynamics, rock mechanics, and finite element methods, based on the display dynamics analysis program ANSYS/LS-DYNA and the Holmquist–Johnson–Cook model, the contact mechanical characteristics between conical pick and rock are analyzed. The resultant force was obtained by obtaining the force curve of the conical pick under X, Y and Z directions, analysis of cutting gear cutting speed of 2.5 m/s, cutting depth of 5, 10, 15, 20 and 25 mm, cutting angle of 30°, 35°, 40°, 45°, 50° parameters of the size of cutting force and cutting ratio energy consumption, thus, the best cutting angle of the conical pick is obtained. The conclusions are as follows: when the cutting depth and cutting speed are constant, and the cutting angle is 45°, the mean cutting force received by the conical pick is the least, the specific energy consumption is the least, and the cutting efficiency is the highest. The best cutting angle of the conical pick should be 45°; When the cutting angle and cutting speed are constant, the energy needed by the cutter to cut the rock increases with the increase of cutting depth. The research results provide a theoretical basis for improving cutting efficiency and cutting life, and for choosing cutting angle and cutting thickness.

Słowa kluczowe

EN

conical pick; energy consumption ratio; cutting angle; computer simulation

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2021
• Tom: Vol. 28
• Strony: 161--173
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Qiao S.

• College of Mechanical &Electrical Engineering, Changsha University, Changsha, Hunan 410022,China
• College of Intelligence Science and Technology, National University of Defense Technology, Changsha, 410003, China

autor

Zhang Z. Q.

• College of Mechanical &Electrical Engineering, Changsha University, Changsha, Hunan 410022,China

autor

Zhu Z. M.

• College of Mechanical &Electrical Engineering, Changsha University, Changsha, Hunan 410022,China

autor

Zhang K.

• School of Mechanical Engineering, Xiangtan University, Xiangtan, 411100, China

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